Common Weakness Enumeration
CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6549 vulnerabilities reference this CWE, most recent first.
CVE-2026-48097 (GCVE-0-2026-48097)
Vulnerability from cvelistv5 – Published: 2026-08-07 19:06 – Updated: 2026-08-07 19:34
VLAI
EPSS
VEX
Title
NexTOR_IP_CHANGER has PATH Injection Leading to Arbitrary Command Execution
Summary
NexTor IP Changer is a command-line tool that leverages the Tor network to periodically rotate a user's IP address. Versions prior to 2.0.0 have a command execution vulnerability due to unsafe use of `shell=True` with commands that rely on executable resolution through the `PATH` environment variable. An attacker controlling the execution environment can place malicious executables such as sudo earlier in the `PATH`, resulting in execution of attacker-controlled code. Version 2.0.0 fixes the issue.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 19:34 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/0x5t4l1n/NexTOR_IP_CHANGER/sec… | x_refsource_CONFIRM |
| https://github.com/0x5t4l1n/NexTOR_IP_CHANGER/rel… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| 0x5t4l1n | NexTOR_IP_CHANGER |
Affected:
< 2.0.0
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-48097",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-07T19:34:37.377341Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-07T19:34:44.269Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "NexTOR_IP_CHANGER",
"vendor": "0x5t4l1n",
"versions": [
{
"status": "affected",
"version": "\u003c 2.0.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "NexTor IP Changer is a command-line tool that leverages the Tor network to periodically rotate a user\u0027s IP address. Versions prior to 2.0.0 have a command execution vulnerability due to unsafe use of `shell=True` with commands that rely on executable resolution through the `PATH` environment variable. An attacker controlling the execution environment can place malicious executables such as sudo earlier in the `PATH`, resulting in execution of attacker-controlled code. Version 2.0.0 fixes the issue."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-78",
"description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476: NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-07T19:06:22.730Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/0x5t4l1n/NexTOR_IP_CHANGER/security/advisories/GHSA-vx6r-vwjq-567w",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/0x5t4l1n/NexTOR_IP_CHANGER/security/advisories/GHSA-vx6r-vwjq-567w"
},
{
"name": "https://github.com/0x5t4l1n/NexTOR_IP_CHANGER/releases/tag/v2.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/0x5t4l1n/NexTOR_IP_CHANGER/releases/tag/v2.0"
}
],
"source": {
"advisory": "GHSA-vx6r-vwjq-567w",
"discovery": "UNKNOWN"
},
"title": "NexTOR_IP_CHANGER has PATH Injection Leading to Arbitrary Command Execution"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-48097",
"datePublished": "2026-08-07T19:06:22.730Z",
"dateReserved": "2026-05-20T18:40:45.834Z",
"dateUpdated": "2026-08-07T19:34:44.269Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-48066 (GCVE-0-2026-48066)
Vulnerability from cvelistv5 – Published: 2026-05-27 19:57 – Updated: 2026-05-28 12:54
VLAI
EPSS
VEX
Title
pam_usb: Thread-unsafe static pointer in log.c causes data race under concurrent PAM authentication
Summary
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/log.c contains a process-wide static pointer that is written on every PAM invocation with the address of a stack-local variable. This violates the PAM re-entrancy requirement and creates a data race when the PAM stack is invoked concurrently from multiple threads. This vulnerability is fixed in 0.9.1.
Severity
5.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 12:54 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/mcdope/pam_usb/security/adviso… | x_refsource_CONFIRM |
| https://github.com/mcdope/pam_usb/issues/350 | x_refsource_MISC |
| https://github.com/mcdope/pam_usb/issues/55 | x_refsource_MISC |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-48066",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-28T12:54:24.115213Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T12:54:38.194Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "pam_usb",
"vendor": "mcdope",
"versions": [
{
"status": "affected",
"version": "\u003c 0.9.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/log.c contains a process-wide static pointer that is written on every PAM invocation with the address of a stack-local variable. This violates the PAM re-entrancy requirement and creates a data race when the PAM stack is invoked concurrently from multiple threads. This vulnerability is fixed in 0.9.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-362",
"description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476: NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T19:59:06.293Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-qg76-57wq-mpv6",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-qg76-57wq-mpv6"
},
{
"name": "https://github.com/mcdope/pam_usb/issues/350",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/mcdope/pam_usb/issues/350"
},
{
"name": "https://github.com/mcdope/pam_usb/issues/55",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/mcdope/pam_usb/issues/55"
}
],
"source": {
"advisory": "GHSA-qg76-57wq-mpv6",
"discovery": "UNKNOWN"
},
"title": "pam_usb: Thread-unsafe static pointer in log.c causes data race under concurrent PAM authentication"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-48066",
"datePublished": "2026-05-27T19:57:42.557Z",
"dateReserved": "2026-05-20T18:25:25.707Z",
"dateUpdated": "2026-05-28T12:54:38.194Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47753 (GCVE-0-2026-47753)
Vulnerability from cvelistv5 – Published: 2026-08-21 14:14 – Updated: 2026-08-21 14:39
VLAI
EPSS
VEX
Title
Incus has a Nil-Pointer Dereference Panic via Instance Backup Import (volume omitted)
Summary
Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).CreateInstanceFromBackup` in `internal/server/storage/backend.go` contains a nil-pointer dereference that an authenticated user with permission to create instances in any project can trigger remotely by uploading a crafted backup tarball. The Incus daemon panics and the process crashes, causing denial of service to every project on that cluster member. This is a sibling of `GHSA-fwj8-62r8-8p8m`, `GHSA-r7w7-mmxr-47r9`, and `GHSA-x5r6-jr56-89pv` (all assigned 2026-05-04). Those patches added guards on adjacent fields of the same `backup/config.Config` struct; the `Volume` field on the instance-import path was missed. Version 7.1.0 contains an updated patch.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 14:37 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/lxc/incus/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/lxc/incus/commit/98e64f0a6fcfd… | x_refsource_MISC |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47753",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-21T14:37:42.721981Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-21T14:39:55.034Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/lxc/incus/security/advisories/GHSA-8g7m-96c8-8wwc"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "incus",
"vendor": "lxc",
"versions": [
{
"status": "affected",
"version": "\u003c 7.1.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Incus is a system container and virtual machine manager. Prior to version 7.1.0, `(*backend).CreateInstanceFromBackup` in `internal/server/storage/backend.go` contains a nil-pointer dereference that an authenticated user with permission to create instances in any project can trigger remotely by uploading a crafted backup tarball. The Incus daemon panics and the process crashes, causing denial of service to every project on that cluster member. This is a sibling of `GHSA-fwj8-62r8-8p8m`, `GHSA-r7w7-mmxr-47r9`, and `GHSA-x5r6-jr56-89pv` (all assigned 2026-05-04). Those patches added guards on adjacent fields of the same `backup/config.Config` struct; the `Volume` field on the instance-import path was missed. Version 7.1.0 contains an updated patch."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 4.4,
"baseSeverity": "MEDIUM",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476: NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-21T14:14:12.280Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/lxc/incus/security/advisories/GHSA-8g7m-96c8-8wwc",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/lxc/incus/security/advisories/GHSA-8g7m-96c8-8wwc"
},
{
"name": "https://github.com/lxc/incus/commit/98e64f0a6fcfdc9676eea0246418d490c53297bf",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/lxc/incus/commit/98e64f0a6fcfdc9676eea0246418d490c53297bf"
}
],
"source": {
"advisory": "GHSA-8g7m-96c8-8wwc",
"discovery": "UNKNOWN"
},
"title": "Incus has a Nil-Pointer Dereference Panic via Instance Backup Import (volume omitted)"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-47753",
"datePublished": "2026-08-21T14:14:12.280Z",
"dateReserved": "2026-05-19T22:16:39.505Z",
"dateUpdated": "2026-08-21T14:39:55.034Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47709 (GCVE-0-2026-47709)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:31 – Updated: 2026-07-22 15:06
VLAI
EPSS
VEX
Title
libheif has a NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe
Summary
libheif is a HEIF and AVIF file format decoder and encoder. Versions prior to 1.22.0 crashes in the public C API `heif_image_handle_get_image_tiling()` when a malformed uncompressed HEIF image item has an associated `uncC` property but no associated `ispe` property. In debug builds this trips the `ispe && uncC` assertion in `ImageItem_uncompressed::get_heif_image_tiling()`. In a release/NDEBUG ASan build, the same file causes a null pointer read at address `0xa8`. Version 1.22.0 fixes the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 15:06 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/strukturag/libheif/security/ad… | x_refsource_CONFIRM |
| https://github.com/strukturag/libheif/issues/1802 | x_refsource_MISC |
| https://github.com/strukturag/libheif/pull/1806 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strukturag | libheif |
Affected:
< 1.22.0
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47709",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-22T15:06:33.485963Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-22T15:06:56.971Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-4h72-vqgp-9376"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "libheif",
"vendor": "strukturag",
"versions": [
{
"status": "affected",
"version": "\u003c 1.22.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "libheif is a HEIF and AVIF file format decoder and encoder. Versions prior to 1.22.0 crashes in the public C API `heif_image_handle_get_image_tiling()` when a malformed uncompressed HEIF image item has an associated `uncC` property but no associated `ispe` property. In debug builds this trips the `ispe \u0026\u0026 uncC` assertion in `ImageItem_uncompressed::get_heif_image_tiling()`. In a release/NDEBUG ASan build, the same file causes a null pointer read at address `0xa8`. Version 1.22.0 fixes the issue."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476: NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-21T21:31:14.724Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/strukturag/libheif/security/advisories/GHSA-4h72-vqgp-9376",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-4h72-vqgp-9376"
},
{
"name": "https://github.com/strukturag/libheif/issues/1802",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strukturag/libheif/issues/1802"
},
{
"name": "https://github.com/strukturag/libheif/pull/1806",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/strukturag/libheif/pull/1806"
}
],
"source": {
"advisory": "GHSA-4h72-vqgp-9376",
"discovery": "UNKNOWN"
},
"title": "libheif has a NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-47709",
"datePublished": "2026-07-21T21:31:14.724Z",
"dateReserved": "2026-05-19T21:29:25.481Z",
"dateUpdated": "2026-07-22T15:06:56.971Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47427 (GCVE-0-2026-47427)
Vulnerability from cvelistv5 – Published: 2026-07-28 15:32 – Updated: 2026-07-28 17:31
VLAI
EPSS
VEX
Title
GitHub MCP Server: Nil Pointer Dereference DoS in completion/complete Handler
Summary
GitHub MCP Server is GitHub's official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go runtime panic; because the crash occurs before any authentication or token validation, any unauthenticated client able to send JSON-RPC messages can crash the server, resulting in a complete denial of service. This issue is fixed in version 1.1.0.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 17:31 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/github/github-mcp-server/secur… | x_refsource_CONFIRM |
| https://github.com/github/github-mcp-server/pull/2502 | x_refsource_MISC |
| https://github.com/github/github-mcp-server/commi… | x_refsource_MISC |
| https://github.com/github/github-mcp-server/relea… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| github | github-mcp-server |
Affected:
< 1.1.0
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47427",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-28T17:31:12.371732Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-28T17:31:19.108Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/github/github-mcp-server/security/advisories/GHSA-w4q6-qw23-4rg7"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "github-mcp-server",
"vendor": "github",
"versions": [
{
"status": "affected",
"version": "\u003c 1.1.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "GitHub MCP Server is GitHub\u0027s official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go runtime panic; because the crash occurs before any authentication or token validation, any unauthenticated client able to send JSON-RPC messages can crash the server, resulting in a complete denial of service. This issue is fixed in version 1.1.0."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476: NULL Pointer Dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-28T15:32:27.294Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/github/github-mcp-server/security/advisories/GHSA-w4q6-qw23-4rg7",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/github/github-mcp-server/security/advisories/GHSA-w4q6-qw23-4rg7"
},
{
"name": "https://github.com/github/github-mcp-server/pull/2502",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/github/github-mcp-server/pull/2502"
},
{
"name": "https://github.com/github/github-mcp-server/commit/c88d2ecdd3bb07f7bdd75296e3ee676febf14f58",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/github/github-mcp-server/commit/c88d2ecdd3bb07f7bdd75296e3ee676febf14f58"
},
{
"name": "https://github.com/github/github-mcp-server/releases/tag/v1.1.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/github/github-mcp-server/releases/tag/v1.1.0"
}
],
"source": {
"advisory": "GHSA-w4q6-qw23-4rg7",
"discovery": "UNKNOWN"
},
"title": "GitHub MCP Server: Nil Pointer Dereference DoS in completion/complete Handler"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-47427",
"datePublished": "2026-07-28T15:32:27.294Z",
"dateReserved": "2026-05-19T19:37:43.527Z",
"dateUpdated": "2026-07-28T17:31:19.108Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47337 (GCVE-0-2026-47337)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:29 – Updated: 2026-05-28 19:23
VLAI
EPSS
VEX
Title
NULL pointer dereference in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation
Summary
Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AF_INET/AF_INET6 socket mediation. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:21 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | Ubuntu Linux |
Affected:
6.8.0 , < 6.8.0-124.124
(dpkg)
Affected: 6.17.0 , < 6.17.0-35.35 (dpkg) Affected: 7.0.0 , < 7.0.0-22.22 (dpkg) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47337",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-28T19:21:23.610809Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T19:23:08.247Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://launchpad.net/ubuntu/+source/",
"defaultStatus": "unaffected",
"modules": [
"AppArmor"
],
"packageName": "linux",
"product": "Ubuntu Linux",
"repo": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/",
"vendor": "Canonical",
"versions": [
{
"lessThan": "6.8.0-124.124",
"status": "affected",
"version": "6.8.0",
"versionType": "dpkg"
},
{
"lessThan": "6.17.0-35.35",
"status": "affected",
"version": "6.17.0",
"versionType": "dpkg"
},
{
"lessThan": "7.0.0-22.22",
"status": "affected",
"version": "7.0.0",
"versionType": "dpkg"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Tristan Madani (@TristanInSec), Talence Security"
},
{
"lang": "en",
"type": "finder",
"value": "Trevor Lawrence, _SiCk, afflicted.sh"
}
],
"descriptions": [
{
"lang": "en",
"value": "Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AF_INET/AF_INET6 socket mediation. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 3.3,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476 NULL pointer dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T18:29:20.805Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=9f03f0012a2367efae1edb4798f1c5103aeb6cbc"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "NULL pointer dereference in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2026-47337",
"datePublished": "2026-05-28T18:29:20.805Z",
"dateReserved": "2026-05-19T10:37:36.434Z",
"dateUpdated": "2026-05-28T19:23:08.247Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47335 (GCVE-0-2026-47335)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:28 – Updated: 2026-05-28 19:23
VLAI
EPSS
VEX
Title
NULL pointer dereference in Ubuntu Linux AppArmor notification handling
Summary
Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel panic.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:21 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | Ubuntu Linux |
Affected:
6.8.0 , < 6.8.0-124.124
(dpkg)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47335",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-28T19:21:08.045629Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T19:23:36.632Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://launchpad.net/ubuntu/+source/",
"defaultStatus": "unaffected",
"modules": [
"AppArmor"
],
"packageName": "linux",
"product": "Ubuntu Linux",
"repo": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/",
"vendor": "Canonical",
"versions": [
{
"lessThan": "6.8.0-124.124",
"status": "affected",
"version": "6.8.0",
"versionType": "dpkg"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Tristan Madani (@TristanInSec), Talence Security"
}
],
"descriptions": [
{
"lang": "en",
"value": "Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel panic."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476 NULL pointer dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T18:28:49.870Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=406571d530ccdbae6119fe64ce9cf5c74160f20b"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "NULL pointer dereference in Ubuntu Linux AppArmor notification handling"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2026-47335",
"datePublished": "2026-05-28T18:28:49.870Z",
"dateReserved": "2026-05-19T10:37:36.434Z",
"dateUpdated": "2026-05-28T19:23:36.632Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47327 (GCVE-0-2026-47327)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:27 – Updated: 2026-05-28 19:25
VLAI
EPSS
VEX
Title
NULL pointer dereference in Ubuntu Linux AppArmor notification handling
Summary
Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:20 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | Ubuntu Linux |
Affected:
6.8.0 , < 6.8.0-124.124
(dpkg)
Affected: 6.17.0 , < 6.17.0-35.35 (dpkg) Affected: 7.0.0 , < 7.0.0-22.22 (dpkg) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47327",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-28T19:20:39.267467Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T19:25:26.930Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://launchpad.net/ubuntu/+source/",
"defaultStatus": "unaffected",
"modules": [
"AppArmor"
],
"packageName": "linux",
"product": "Ubuntu Linux",
"repo": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/",
"vendor": "Canonical",
"versions": [
{
"lessThan": "6.8.0-124.124",
"status": "affected",
"version": "6.8.0",
"versionType": "dpkg"
},
{
"lessThan": "6.17.0-35.35",
"status": "affected",
"version": "6.17.0",
"versionType": "dpkg"
},
{
"lessThan": "7.0.0-22.22",
"status": "affected",
"version": "7.0.0",
"versionType": "dpkg"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Tristan Madani (@TristanInSec), Talence Security"
}
],
"descriptions": [
{
"lang": "en",
"value": "Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel oops."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 3.3,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476 NULL pointer dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T18:27:20.987Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=7f3c4902c39432ce7ea0d384cb70eba282247fac"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "NULL pointer dereference in Ubuntu Linux AppArmor notification handling"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2026-47327",
"datePublished": "2026-05-28T18:27:20.987Z",
"dateReserved": "2026-05-19T10:37:36.433Z",
"dateUpdated": "2026-05-28T19:25:26.930Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47308 (GCVE-0-2026-47308)
Vulnerability from cvelistv5 – Published: 2026-05-19 04:17 – Updated: 2026-05-19 12:38
VLAI
EPSS
VEX
Summary
NULL pointer dereference vulnerability in Samsung Open Source Walrus allows Pointer Manipulation.
This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 12:38 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | Walrus |
Affected:
f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47308",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-19T12:38:22.718886Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T12:38:34.943Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Walrus",
"vendor": "Samsung Open Source",
"versions": [
{
"status": "affected",
"version": "f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Sebasti\u00e1n Alba Vives"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "NULL pointer dereference vulnerability in Samsung Open Source Walrus allows Pointer Manipulation.\u003cp\u003eThis issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.\u003c/p\u003e"
}
],
"value": "NULL pointer dereference vulnerability in Samsung Open Source Walrus allows Pointer Manipulation.\n\nThis issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9."
}
],
"impacts": [
{
"capecId": "CAPEC-129",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-129 Pointer Manipulation"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476 NULL pointer dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T04:17:49.970Z",
"orgId": "ca193ba2-0cff-4e34-b04e-1ea07103c6fe",
"shortName": "samsung.tv_appliance"
},
"references": [
{
"url": "https://github.com/Samsung/walrus/pull/409"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "ca193ba2-0cff-4e34-b04e-1ea07103c6fe",
"assignerShortName": "samsung.tv_appliance",
"cveId": "CVE-2026-47308",
"datePublished": "2026-05-19T04:17:49.970Z",
"dateReserved": "2026-05-19T02:40:40.159Z",
"dateUpdated": "2026-05-19T12:38:34.943Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47307 (GCVE-0-2026-47307)
Vulnerability from cvelistv5 – Published: 2026-05-19 02:51 – Updated: 2026-05-19 12:44
VLAI
EPSS
VEX
Summary
NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions.
This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 12:44 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | Walrus |
Affected:
f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47307",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-19T12:44:44.127057Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T12:44:58.520Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Walrus",
"vendor": "Samsung Open Source",
"versions": [
{
"status": "affected",
"version": "f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Sebasti\u00e1n Alba Vives"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions.\u003cp\u003eThis issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.\u003c/p\u003e"
}
],
"value": "NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions.\n\nThis issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9."
}
],
"impacts": [
{
"capecId": "CAPEC-230",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-230 Serialized Data with Nested Payloads"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476 NULL pointer dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-19T02:51:55.651Z",
"orgId": "ca193ba2-0cff-4e34-b04e-1ea07103c6fe",
"shortName": "samsung.tv_appliance"
},
"references": [
{
"url": "https://github.com/Samsung/walrus/pull/409"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "ca193ba2-0cff-4e34-b04e-1ea07103c6fe",
"assignerShortName": "samsung.tv_appliance",
"cveId": "CVE-2026-47307",
"datePublished": "2026-05-19T02:51:55.651Z",
"dateReserved": "2026-05-19T02:40:40.159Z",
"dateUpdated": "2026-05-19T12:44:58.520Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation MIT-56
Implementation
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Requirements
Select a programming language that is not susceptible to these issues.
Mitigation
Implementation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Architecture and Design
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Implementation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.