CVE-2026-93146 (GCVE-0-2026-93146)
Vulnerability from cvelistv5
Published
2026-09-17 16:11
Modified
2026-10-30 12:36
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
time/namespace: Validate nanosecond field in proc_timens_set_offset()
The function validates tv_sec to be within [-KTIME_SEC_MAX, KTIME_SEC_MAX]
but never validates that tv_nsec is within the valid range of
[0, NSEC_PER_SEC-1] before using it in timespec64_add().
timespec64_add() expects both timespec64 structures to have normalized
values with tv_nsec in the range [0, 999999999]. If off->val.tv_nsec
contains invalid values (negative or >= NSEC_PER_SEC), it could lead to
incorrect calculations or unexpected behavior.
Add validation to ensure tv_nsec is within the valid range before
performing the addition.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 04a8682a71becdb639ec9c0d82b315a2baef7a5d Version: 04a8682a71becdb639ec9c0d82b315a2baef7a5d Version: 04a8682a71becdb639ec9c0d82b315a2baef7a5d Version: 04a8682a71becdb639ec9c0d82b315a2baef7a5d Version: 04a8682a71becdb639ec9c0d82b315a2baef7a5d Version: 04a8682a71becdb639ec9c0d82b315a2baef7a5d |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"kernel/time/namespace.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "ce0dd307dfa3193fbf06371b7c819a6bff7d3d68",
"status": "affected",
"version": "04a8682a71becdb639ec9c0d82b315a2baef7a5d",
"versionType": "git"
},
{
"lessThan": "5b8a40de738b7c4896c2edbc6262bd1b3462ded0",
"status": "affected",
"version": "04a8682a71becdb639ec9c0d82b315a2baef7a5d",
"versionType": "git"
},
{
"lessThan": "b20d7085ab314672447322c10cc5d1ba443e3b8e",
"status": "affected",
"version": "04a8682a71becdb639ec9c0d82b315a2baef7a5d",
"versionType": "git"
},
{
"lessThan": "db667d2970c756cc7b483f45f272440f845a665b",
"status": "affected",
"version": "04a8682a71becdb639ec9c0d82b315a2baef7a5d",
"versionType": "git"
},
{
"lessThan": "1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce",
"status": "affected",
"version": "04a8682a71becdb639ec9c0d82b315a2baef7a5d",
"versionType": "git"
},
{
"lessThan": "06aba58e58492d2b8eae059274caed29025ea96e",
"status": "affected",
"version": "04a8682a71becdb639ec9c0d82b315a2baef7a5d",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"kernel/time/namespace.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"lessThan": "5.6",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.191",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.191",
"versionStartIncluding": "5.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.160",
"versionStartIncluding": "5.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.114",
"versionStartIncluding": "5.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.52",
"versionStartIncluding": "5.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.6",
"versionStartIncluding": "5.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3",
"versionStartIncluding": "5.6",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntime/namespace: Validate nanosecond field in proc_timens_set_offset()\n\nThe function validates tv_sec to be within [-KTIME_SEC_MAX, KTIME_SEC_MAX]\nbut never validates that tv_nsec is within the valid range of\n[0, NSEC_PER_SEC-1] before using it in timespec64_add().\n\ntimespec64_add() expects both timespec64 structures to have normalized\nvalues with tv_nsec in the range [0, 999999999]. If off-\u003eval.tv_nsec\ncontains invalid values (negative or \u003e= NSEC_PER_SEC), it could lead to\nincorrect calculations or unexpected behavior.\n\nAdd validation to ensure tv_nsec is within the valid range before\nperforming the addition."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-30T12:36:07.785Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/ce0dd307dfa3193fbf06371b7c819a6bff7d3d68"
},
{
"url": "https://git.kernel.org/stable/c/5b8a40de738b7c4896c2edbc6262bd1b3462ded0"
},
{
"url": "https://git.kernel.org/stable/c/b20d7085ab314672447322c10cc5d1ba443e3b8e"
},
{
"url": "https://git.kernel.org/stable/c/db667d2970c756cc7b483f45f272440f845a665b"
},
{
"url": "https://git.kernel.org/stable/c/1f0c3c0c36c7aedf55a60d9c71c4bd258b8937ce"
},
{
"url": "https://git.kernel.org/stable/c/06aba58e58492d2b8eae059274caed29025ea96e"
}
],
"title": "time/namespace: Validate nanosecond field in proc_timens_set_offset()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-93146",
"datePublished": "2026-09-17T16:11:44.117Z",
"dateReserved": "2026-09-17T16:02:15.088Z",
"dateUpdated": "2026-10-30T12:36:07.785Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…