CWE-416
Weakness AllowedUse After Free
Abstraction: Variant · Status: Stable
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Mapping guidance
This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
Relationships and members
Modes of introduction
Detection methods
Fuzzing
Fuzz testing (fuzzing) is a powerful technique for generating large numbers of diverse inputs - either randomly or algorithmically - and dynamically invoking the code with those inputs. Even with random inputs, it is often capable of generating unexpected results such as crashes, memory corruption, or resource consumption. Fuzzing effectively produces repeatable test cases that clearly indicate bugs, which helps developers to diagnose the issues.
Effectiveness: High
Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
Effectiveness: High
Automated Dynamic Analysis
Use tools that are integrated during compilation to insert runtime error-checking mechanisms related to memory safety errors, such as AddressSanitizer (ASan) for C/C++ [REF-1518].
Effectiveness: Moderate
Crafted inputs are necessary to reach the code containing the error, such as generated by fuzzers. Also, these tools may reduce performance, and they only report the error condition - not the original mistake that led to the error.
Content history
Suggested rephrase for extended description
Contributed or reviewed taxonomy mappings for ISA/IEC 62443
Provided diagram to improve CWE usability
updated Potential_Mitigations, Time_of_Introduction
added/updated white box definitions
updated Applicable_Platforms, Common_Consequences, Relationships, Observed_Example, Other_Notes, Taxonomy_Mappings
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updated Common_Consequences
updated Relationships
updated Potential_Mitigations
updated Observed_Examples, Relationships
updated Alternate_Terms, Common_Consequences, Description, Observed_Examples, Other_Notes, Potential_Mitigations, Relationships
updated Description
updated Common_Consequences
updated Demonstrative_Examples
updated Relationships, Taxonomy_Mappings
updated References, Relationships
updated Relationships, Taxonomy_Mappings
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updated Demonstrative_Examples, Relationships, Taxonomy_Mappings, White_Box_Definitions
updated Relationships
updated Relationships, Type
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updated References, Relationships, Taxonomy_Mappings
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updated Observed_Examples, Relationships
updated Description, Relationships, Taxonomy_Mappings
updated Detection_Factors, Relationships, Time_of_Introduction
updated Mapping_Notes, Relationships
updated Observed_Examples
updated Taxonomy_Mappings
updated Alternate_Terms, Common_Consequences, Description, Diagram, Potential_Mitigations, Relationships, Weakness_Ordinalities
updated Relationships
updated Observed_Examples
updated Functional_Areas
updated Applicable_Platforms, Detection_Factors, References, Relationships
updated Common_Consequences, Observed_Examples
updated Observed_Examples, References
12544 vulnerabilities reference this CWE, most recent first.
GHSA-PXV4-RWXF-M755
Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-06-25 21:31In the Linux kernel, the following vulnerability has been resolved:
power: supply: cpcap-battery: Fix use-after-free in power_supply_changed()
Using the devm_ variant for requesting IRQ before the devm_
variant for allocating/registering the power_supply handle, means that
the power_supply handle will be deallocated/unregistered before the
interrupt handler (since devm_ naturally deallocates in reverse
allocation order). This means that during removal, there is a race
condition where an interrupt can fire just after the power_supply
handle has been freed, but just before the corresponding
unregistration of the IRQ handler has run.
This will lead to the IRQ handler calling power_supply_changed() with
a freed power_supply handle. Which usually crashes the system or
otherwise silently corrupts the memory...
Note that there is a similar situation which can also happen during
probe(); the possibility of an interrupt firing before registering
the power_supply handle. This would then lead to the nasty situation
of using the power_supply handle uninitialized in
power_supply_changed().
Fix this racy use-after-free by making sure the IRQ is requested after
the registration of the power_supply handle.
{
"affected": [],
"aliases": [
"CVE-2026-45885"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-27T14:17:02Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: cpcap-battery: Fix use-after-free in power_supply_changed()\n\nUsing the `devm_` variant for requesting IRQ _before_ the `devm_`\nvariant for allocating/registering the `power_supply` handle, means that\nthe `power_supply` handle will be deallocated/unregistered _before_ the\ninterrupt handler (since `devm_` naturally deallocates in reverse\nallocation order). This means that during removal, there is a race\ncondition where an interrupt can fire just _after_ the `power_supply`\nhandle has been freed, *but* just _before_ the corresponding\nunregistration of the IRQ handler has run.\n\nThis will lead to the IRQ handler calling `power_supply_changed()` with\na freed `power_supply` handle. Which usually crashes the system or\notherwise silently corrupts the memory...\n\nNote that there is a similar situation which can also happen during\n`probe()`; the possibility of an interrupt firing _before_ registering\nthe `power_supply` handle. This would then lead to the nasty situation\nof using the `power_supply` handle *uninitialized* in\n`power_supply_changed()`.\n\nFix this racy use-after-free by making sure the IRQ is requested _after_\nthe registration of the `power_supply` handle.",
"id": "GHSA-pxv4-rwxf-m755",
"modified": "2026-06-25T21:31:20Z",
"published": "2026-05-27T15:33:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45885"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2841bbb5a35c4449c0a0458e8e476b2a62f95147"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2ce2334be155bd8bad6377e99984246ce4dbd08c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3ff75cba1c98349a23a8f9333981deba1972cc11"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/642f33e34b969eedec334738fd5df95d2dc42742"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c549dd3de4b3f6e726d1b8386d40ccf7d3abdbe4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cbb9b07f88a9ef6518934c41eb3e8cf840d657d5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e261be6f18929f2397cd54cd583a2df624c129c1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f3fbe309c9bfe1aac1e2b26543e9dc4829f3275a"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q226-3PH8-PX6R
Vulnerability from github – Published: 2026-06-05 00:31 – Updated: 2026-06-05 03:31Use after free in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-11054"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-04T23:17:09Z",
"severity": "HIGH"
},
"details": "Use after free in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)",
"id": "GHSA-q226-3ph8-px6r",
"modified": "2026-06-05T03:31:33Z",
"published": "2026-06-05T00:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11054"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/498845284"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q227-M872-459M
Vulnerability from github – Published: 2026-10-28 15:31 – Updated: 2026-10-28 15:31A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server context.
{
"affected": [],
"aliases": [
"CVE-2026-93515"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-28T13:17:29Z",
"severity": "MODERATE"
},
"details": "A use-after-free in\u00a0present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server context.",
"id": "GHSA-q227-m872-459m",
"modified": "2026-10-28T15:31:53Z",
"published": "2026-10-28T15:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93515"
},
{
"type": "WEB",
"url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/1b6955c3108e6b43433aefe860070708e6f43d1b"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-Q23H-296P-M22R
Vulnerability from github – Published: 2024-11-22 21:32 – Updated: 2024-11-22 21:32PDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24213.
{
"affected": [],
"aliases": [
"CVE-2024-8818"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-22T21:15:20Z",
"severity": "HIGH"
},
"details": "PDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24213.",
"id": "GHSA-q23h-296p-m22r",
"modified": "2024-11-22T21:32:19Z",
"published": "2024-11-22T21:32:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8818"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1241"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q248-6JPV-6WJH
Vulnerability from github – Published: 2022-05-13 01:02 – Updated: 2022-05-13 01:02An exploitable use-after-free vulnerability exists in the JavaScript engine Foxit Software Foxit PDF Reader version 9.0.1.1049. A specially crafted PDF document can trigger a previously freed object in memory to be reused, resulting in arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. If a browser plugin extension is enabled, visiting a malicious site can also trigger the vulnerability.
{
"affected": [],
"aliases": [
"CVE-2018-3850"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-23T15:29:00Z",
"severity": "HIGH"
},
"details": "An exploitable use-after-free vulnerability exists in the JavaScript engine Foxit Software Foxit PDF Reader version 9.0.1.1049. A specially crafted PDF document can trigger a previously freed object in memory to be reused, resulting in arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. If a browser plugin extension is enabled, visiting a malicious site can also trigger the vulnerability.",
"id": "GHSA-q248-6jpv-6wjh",
"modified": "2022-05-13T01:02:06Z",
"published": "2022-05-13T01:02:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-3850"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0532"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/103942"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1040733"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q25H-FM3C-JGP6
Vulnerability from github – Published: 2022-05-14 03:54 – Updated: 2022-05-14 03:54The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device.
{
"affected": [],
"aliases": [
"CVE-2016-9576"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-12-28T07:59:00Z",
"severity": "HIGH"
},
"details": "The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device.",
"id": "GHSA-q25h-fm3c-jgp6",
"modified": "2022-05-14T03:54:59Z",
"published": "2022-05-14T03:54:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9576"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/a0ac402cfcdc904f9772e1762b3fda112dcc56a0"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:0817"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:1842"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:2077"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:2669"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2016-9576"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1403145"
},
{
"type": "WEB",
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a0ac402cfcdc904f9772e1762b3fda112dcc56a0"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00040.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00041.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2017-0817.html"
},
{
"type": "WEB",
"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/12/08/19"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/94821"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q25W-PV7X-X34V
Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-13 18:31In the Linux kernel, the following vulnerability has been resolved:
virtio-blk: Avoid use-after-free on suspend/resume
hctx->user_data is set to vq in virtblk_init_hctx(). However, vq is freed on suspend and reallocated on resume. So, hctx->user_data is invalid after resume, and it will cause use-after-free accessing which will result in the kernel crash something like below:
[ 22.428391] Call Trace: [ 22.428899] [ 22.429339] virtqueue_add_split+0x3eb/0x620 [ 22.430035] ? __blk_mq_alloc_requests+0x17f/0x2d0 [ 22.430789] ? kvm_clock_get_cycles+0x14/0x30 [ 22.431496] virtqueue_add_sgs+0xad/0xd0 [ 22.432108] virtblk_add_req+0xe8/0x150 [ 22.432692] virtio_queue_rqs+0xeb/0x210 [ 22.433330] blk_mq_flush_plug_list+0x1b8/0x280 [ 22.434059] __blk_flush_plug+0xe1/0x140 [ 22.434853] blk_finish_plug+0x20/0x40 [ 22.435512] read_pages+0x20a/0x2e0 [ 22.436063] ? folio_add_lru+0x62/0xa0 [ 22.436652] page_cache_ra_unbounded+0x112/0x160 [ 22.437365] filemap_get_pages+0xe1/0x5b0 [ 22.437964] ? context_to_sid+0x70/0x100 [ 22.438580] ? sidtab_context_to_sid+0x32/0x400 [ 22.439979] filemap_read+0xcd/0x3d0 [ 22.440917] xfs_file_buffered_read+0x4a/0xc0 [ 22.441984] xfs_file_read_iter+0x65/0xd0 [ 22.442970] __kernel_read+0x160/0x2e0 [ 22.443921] bprm_execve+0x21b/0x640 [ 22.444809] do_execveat_common.isra.0+0x1a8/0x220 [ 22.446008] __x64_sys_execve+0x2d/0x40 [ 22.446920] do_syscall_64+0x37/0x90 [ 22.447773] entry_SYSCALL_64_after_hwframe+0x63/0xcd
This patch fixes this issue by getting vq from vblk, and removes virtblk_init_hctx().
{
"affected": [],
"aliases": [
"CVE-2022-50064"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T11:15:35Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-blk: Avoid use-after-free on suspend/resume\n\nhctx-\u003euser_data is set to vq in virtblk_init_hctx(). However, vq is\nfreed on suspend and reallocated on resume. So, hctx-\u003euser_data is\ninvalid after resume, and it will cause use-after-free accessing which\nwill result in the kernel crash something like below:\n\n[ 22.428391] Call Trace:\n[ 22.428899] \u003cTASK\u003e\n[ 22.429339] virtqueue_add_split+0x3eb/0x620\n[ 22.430035] ? __blk_mq_alloc_requests+0x17f/0x2d0\n[ 22.430789] ? kvm_clock_get_cycles+0x14/0x30\n[ 22.431496] virtqueue_add_sgs+0xad/0xd0\n[ 22.432108] virtblk_add_req+0xe8/0x150\n[ 22.432692] virtio_queue_rqs+0xeb/0x210\n[ 22.433330] blk_mq_flush_plug_list+0x1b8/0x280\n[ 22.434059] __blk_flush_plug+0xe1/0x140\n[ 22.434853] blk_finish_plug+0x20/0x40\n[ 22.435512] read_pages+0x20a/0x2e0\n[ 22.436063] ? folio_add_lru+0x62/0xa0\n[ 22.436652] page_cache_ra_unbounded+0x112/0x160\n[ 22.437365] filemap_get_pages+0xe1/0x5b0\n[ 22.437964] ? context_to_sid+0x70/0x100\n[ 22.438580] ? sidtab_context_to_sid+0x32/0x400\n[ 22.439979] filemap_read+0xcd/0x3d0\n[ 22.440917] xfs_file_buffered_read+0x4a/0xc0\n[ 22.441984] xfs_file_read_iter+0x65/0xd0\n[ 22.442970] __kernel_read+0x160/0x2e0\n[ 22.443921] bprm_execve+0x21b/0x640\n[ 22.444809] do_execveat_common.isra.0+0x1a8/0x220\n[ 22.446008] __x64_sys_execve+0x2d/0x40\n[ 22.446920] do_syscall_64+0x37/0x90\n[ 22.447773] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThis patch fixes this issue by getting vq from vblk, and removes\nvirtblk_init_hctx().",
"id": "GHSA-q25w-pv7x-x34v",
"modified": "2025-11-13T18:31:01Z",
"published": "2025-06-18T12:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50064"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b54e14535bc34bf649372060d518ec9f2b893b3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8d12ec10292877751ee4463b11a63bd850bc09b5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q262-3HFR-F5Q4
Vulnerability from github – Published: 2024-05-08 03:30 – Updated: 2025-04-12 00:30A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the data pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer's stack frame was concurrently being "freed" when returning from virNetClientIOEventLoop(). The 'virtproxyd' daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.
{
"affected": [],
"aliases": [
"CVE-2024-4418"
],
"database_specific": {
"cwe_ids": [
"CWE-416",
"CWE-562"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-08T03:15:07Z",
"severity": "MODERATE"
},
"details": "A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the `data` pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer\u0027s stack frame was concurrently being \"freed\" when returning from virNetClientIOEventLoop(). The \u0027virtproxyd\u0027 daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.",
"id": "GHSA-q262-3hfr-f5q4",
"modified": "2025-04-12T00:30:26Z",
"published": "2024-05-08T03:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4418"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:4351"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:4432"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:4757"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2024-4418"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278616"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4IE44UIIC3QWBFRB4EUSFNLJBU6JLNSD"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Q4ZQBAJVHIZMCZNTRPUW3ZKXRKLXRQZU"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20250411-0002"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q263-XMXV-64C3
Vulnerability from github – Published: 2026-06-09 18:30 – Updated: 2026-06-09 18:30Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2026-47653"
],
"database_specific": {
"cwe_ids": [
"CWE-416",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T17:17:36Z",
"severity": "HIGH"
},
"details": "Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-q263-xmxv-64c3",
"modified": "2026-06-09T18:30:55Z",
"published": "2026-06-09T18:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47653"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47653"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-Q268-545M-52MR
Vulnerability from github – Published: 2026-10-13 21:37 – Updated: 2026-10-13 21:37Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
{
"affected": [],
"aliases": [
"CVE-2026-97743"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-13T19:22:11Z",
"severity": "MODERATE"
},
"details": "Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.",
"id": "GHSA-q268-545m-52mr",
"modified": "2026-10-13T21:37:10Z",
"published": "2026-10-13T21:37:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97743"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97743"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.