CVE-2025-68740 (GCVE-0-2025-68740)
Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2026-06-16 19:20
VLAI
EPSS
VEX
Title
ima: Handle error code returned by ima_filter_rule_match()
Summary
In the Linux kernel, the following vulnerability has been resolved:
ima: Handle error code returned by ima_filter_rule_match()
In ima_match_rules(), if ima_filter_rule_match() returns -ENOENT due to
the rule being NULL, the function incorrectly skips the 'if (!rc)' check
and sets 'result = true'. The LSM rule is considered a match, causing
extra files to be measured by IMA.
This issue can be reproduced in the following scenario:
After unloading the SELinux policy module via 'semodule -d', if an IMA
measurement is triggered before ima_lsm_rules is updated,
in ima_match_rules(), the first call to ima_filter_rule_match() returns
-ESTALE. This causes the code to enter the 'if (rc == -ESTALE &&
!rule_reinitialized)' block, perform ima_lsm_copy_rule() and retry. In
ima_lsm_copy_rule(), since the SELinux module has been removed, the rule
becomes NULL, and the second call to ima_filter_rule_match() returns
-ENOENT. This bypasses the 'if (!rc)' check and results in a false match.
Call trace:
selinux_audit_rule_match+0x310/0x3b8
security_audit_rule_match+0x60/0xa0
ima_match_rules+0x2e4/0x4a0
ima_match_policy+0x9c/0x1e8
ima_get_action+0x48/0x60
process_measurement+0xf8/0xa98
ima_bprm_check+0x98/0xd8
security_bprm_check+0x5c/0x78
search_binary_handler+0x6c/0x318
exec_binprm+0x58/0x1b8
bprm_execve+0xb8/0x130
do_execveat_common.isra.0+0x1a8/0x258
__arm64_sys_execve+0x48/0x68
invoke_syscall+0x50/0x128
el0_svc_common.constprop.0+0xc8/0xf0
do_el0_svc+0x24/0x38
el0_svc+0x44/0x200
el0t_64_sync_handler+0x100/0x130
el0t_64_sync+0x3c8/0x3d0
Fix this by changing 'if (!rc)' to 'if (rc <= 0)' to ensure that error
codes like -ENOENT do not bypass the check and accidentally result in a
successful match.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 19:20 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
4af4662fa4a9dc62289c580337ae2506339c4729 , < d14e0ec6a6828ee0dffa163fb5d513c9a21f0a51
(git)
Affected: 4af4662fa4a9dc62289c580337ae2506339c4729 , < f2f4627b74c120fcdd8e1db93bc91f9bbaf46f85 (git) Affected: 4af4662fa4a9dc62289c580337ae2506339c4729 , < 88cd5fbf5869731be8fc6f7cecb4e0d6ab3d8749 (git) Affected: 4af4662fa4a9dc62289c580337ae2506339c4729 , < cca3e7df3c0f99542033657ba850b9a6d27f8784 (git) Affected: 4af4662fa4a9dc62289c580337ae2506339c4729 , < c2238d487a640ae3511e1b6f4640ab27ce10d7f6 (git) Affected: 4af4662fa4a9dc62289c580337ae2506339c4729 , < de4431faf308d0c533cb386f5fa9af009bc86158 (git) Affected: 4af4662fa4a9dc62289c580337ae2506339c4729 , < 32952c4f4d1b2deb30dce72ba109da808a9018e1 (git) Affected: 4af4662fa4a9dc62289c580337ae2506339c4729 , < 738c9738e690f5cea24a3ad6fd2d9a323cf614f6 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.30
Unaffected: 0 , < 2.6.30 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.63 , ≤ 6.12.* (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
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}
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"datePublished": "2025-12-24T12:09:37.971Z",
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: Handle error code returned by ima_filter_rule_match()\n\nIn ima_match_rules(), if ima_filter_rule_match() returns -ENOENT due to\nthe rule being NULL, the function incorrectly skips the \u0027if (!rc)\u0027 check\nand sets \u0027result = true\u0027. The LSM rule is considered a match, causing\nextra files to be measured by IMA.\n\nThis issue can be reproduced in the following scenario:\nAfter unloading the SELinux policy module via \u0027semodule -d\u0027, if an IMA\nmeasurement is triggered before ima_lsm_rules is updated,\nin ima_match_rules(), the first call to ima_filter_rule_match() returns\n-ESTALE. This causes the code to enter the \u0027if (rc == -ESTALE \u0026\u0026\n!rule_reinitialized)\u0027 block, perform ima_lsm_copy_rule() and retry. In\nima_lsm_copy_rule(), since the SELinux module has been removed, the rule\nbecomes NULL, and the second call to ima_filter_rule_match() returns\n-ENOENT. This bypasses the \u0027if (!rc)\u0027 check and results in a false match.\n\nCall trace:\n selinux_audit_rule_match+0x310/0x3b8\n security_audit_rule_match+0x60/0xa0\n ima_match_rules+0x2e4/0x4a0\n ima_match_policy+0x9c/0x1e8\n ima_get_action+0x48/0x60\n process_measurement+0xf8/0xa98\n ima_bprm_check+0x98/0xd8\n security_bprm_check+0x5c/0x78\n search_binary_handler+0x6c/0x318\n exec_binprm+0x58/0x1b8\n bprm_execve+0xb8/0x130\n do_execveat_common.isra.0+0x1a8/0x258\n __arm64_sys_execve+0x48/0x68\n invoke_syscall+0x50/0x128\n el0_svc_common.constprop.0+0xc8/0xf0\n do_el0_svc+0x24/0x38\n el0_svc+0x44/0x200\n el0t_64_sync_handler+0x100/0x130\n el0t_64_sync+0x3c8/0x3d0\n\nFix this by changing \u0027if (!rc)\u0027 to \u0027if (rc \u003c= 0)\u0027 to ensure that error\ncodes like -ENOENT do not bypass the check and accidentally result in a\nsuccessful match."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nima: Manejar el c\u00f3digo de error devuelto por ima_filter_rule_match()\n\nEn ima_match_rules(), si ima_filter_rule_match() devuelve -ENOENT debido a que la regla es NULL, la funci\u00f3n omite incorrectamente la comprobaci\u00f3n \u0027if (!rc)\u0027 y establece \u0027result = true\u0027. La regla LSM se considera una coincidencia, lo que provoca que IMA mida archivos adicionales.\n\nEste problema puede reproducirse en el siguiente escenario:\nDespu\u00e9s de descargar el m\u00f3dulo de pol\u00edtica de SELinux mediante \u0027semodule -d\u0027, si se activa una medici\u00f3n de IMA antes de que se actualice ima_lsm_rules, en ima_match_rules(), la primera llamada a ima_filter_rule_match() devuelve -ESTALE. Esto hace que el c\u00f3digo entre en el bloque \u0027if (rc == -ESTALE \u0026\u0026 !rule_reinitialized)\u0027, realice ima_lsm_copy_rule() y reintente. En ima_lsm_copy_rule(), dado que el m\u00f3dulo SELinux ha sido eliminado, la regla se vuelve NULL, y la segunda llamada a ima_filter_rule_match() devuelve -ENOENT. Esto omite la comprobaci\u00f3n \u0027if (!rc)\u0027 y resulta en una coincidencia falsa.\n\nTraza de llamadas:\n selinux_audit_rule_match+0x310/0x3b8\n security_audit_rule_match+0x60/0xa0\n ima_match_rules+0x2e4/0x4a0\n ima_match_policy+0x9c/0x1e8\n ima_get_action+0x48/0x60\n process_measurement+0xf8/0xa98\n ima_bprm_check+0x98/0xd8\n security_bprm_check+0x5c/0x78\n search_binary_handler+0x6c/0x318\n exec_binprm+0x58/0x1b8\n bprm_execve+0xb8/0x130\n do_execveat_common.isra.0+0x1a8/0x258\n __arm64_sys_execve+0x48/0x68\n invoke_syscall+0x50/0x128\n el0_svc_common.constprop.0+0xc8/0xf0\n do_el0_svc+0x24/0x38\n el0_svc+0x44/0x200\n el0t_64_sync_handler+0x100/0x130\n el0t_64_sync+0x3c8/0x3d0\n\nSolucione esto cambiando \u0027if (!rc)\u0027 a \u0027if (rc menor o igual a 0)\u0027 para asegurar que los c\u00f3digos de error como -ENOENT no omitan la comprobaci\u00f3n y accidentalmente resulten en una coincidencia exitosa."
}
],
"id": "CVE-2025-68740",
"lastModified": "2026-10-05T14:10:00.267",
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"options": [
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},
{
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},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:20:20.279928Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-12-24T13:16:28.943",
"references": [
{
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{
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},
{
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"url": "https://git.kernel.org/stable/c/88cd5fbf5869731be8fc6f7cecb4e0d6ab3d8749"
},
{
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},
{
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"url": "https://git.kernel.org/stable/c/cca3e7df3c0f99542033657ba850b9a6d27f8784"
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"url": "https://git.kernel.org/stable/c/d14e0ec6a6828ee0dffa163fb5d513c9a21f0a51"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/de4431faf308d0c533cb386f5fa9af009bc86158"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f2f4627b74c120fcdd8e1db93bc91f9bbaf46f85"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-11-07T10:42:00+00:00",
"cve": "CVE-2025-68740",
"id": "CVE-2025-68740",
"initial_release_date": "2025-12-24T00:00:00+00:00",
"product_status:known_affected": "186",
"product_status:known_not_affected": "14",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ima: Handle error code returned by ima_filter_rule_match()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68740.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
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"other": {
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"options": [
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},
{
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},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-16T19:20:20.279928Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T19:20:26.024Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"security/integrity/ima/ima_policy.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "d14e0ec6a6828ee0dffa163fb5d513c9a21f0a51",
"status": "affected",
"version": "4af4662fa4a9dc62289c580337ae2506339c4729",
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{
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],
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.30"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.10.248",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.15.198",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.160",
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"status": "unaffected",
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"status": "unaffected",
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"status": "unaffected",
"version": "6.17.13",
"versionType": "semver"
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{
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"status": "unaffected",
"version": "6.18.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
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"vulnerable": true
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{
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"negate": false,
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: Handle error code returned by ima_filter_rule_match()\n\nIn ima_match_rules(), if ima_filter_rule_match() returns -ENOENT due to\nthe rule being NULL, the function incorrectly skips the \u0027if (!rc)\u0027 check\nand sets \u0027result = true\u0027. The LSM rule is considered a match, causing\nextra files to be measured by IMA.\n\nThis issue can be reproduced in the following scenario:\nAfter unloading the SELinux policy module via \u0027semodule -d\u0027, if an IMA\nmeasurement is triggered before ima_lsm_rules is updated,\nin ima_match_rules(), the first call to ima_filter_rule_match() returns\n-ESTALE. This causes the code to enter the \u0027if (rc == -ESTALE \u0026\u0026\n!rule_reinitialized)\u0027 block, perform ima_lsm_copy_rule() and retry. In\nima_lsm_copy_rule(), since the SELinux module has been removed, the rule\nbecomes NULL, and the second call to ima_filter_rule_match() returns\n-ENOENT. This bypasses the \u0027if (!rc)\u0027 check and results in a false match.\n\nCall trace:\n selinux_audit_rule_match+0x310/0x3b8\n security_audit_rule_match+0x60/0xa0\n ima_match_rules+0x2e4/0x4a0\n ima_match_policy+0x9c/0x1e8\n ima_get_action+0x48/0x60\n process_measurement+0xf8/0xa98\n ima_bprm_check+0x98/0xd8\n security_bprm_check+0x5c/0x78\n search_binary_handler+0x6c/0x318\n exec_binprm+0x58/0x1b8\n bprm_execve+0xb8/0x130\n do_execveat_common.isra.0+0x1a8/0x258\n __arm64_sys_execve+0x48/0x68\n invoke_syscall+0x50/0x128\n el0_svc_common.constprop.0+0xc8/0xf0\n do_el0_svc+0x24/0x38\n el0_svc+0x44/0x200\n el0t_64_sync_handler+0x100/0x130\n el0t_64_sync+0x3c8/0x3d0\n\nFix this by changing \u0027if (!rc)\u0027 to \u0027if (rc \u003c= 0)\u0027 to ensure that error\ncodes like -ENOENT do not bypass the check and accidentally result in a\nsuccessful match."
}
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},
{
"url": "https://git.kernel.org/stable/c/738c9738e690f5cea24a3ad6fd2d9a323cf614f6"
}
],
"title": "ima: Handle error code returned by ima_filter_rule_match()",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"cveId": "CVE-2025-68740",
"datePublished": "2025-12-24T12:09:37.971Z",
"dateReserved": "2025-12-24T10:30:51.030Z",
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"state": "PUBLISHED"
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}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.