posix-clock: Fix missing timespec64 check in pc_clock_settime()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-50195
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-11-08 06:15:16 UTC
Updated2026-08-04 11:21:31 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: posix-clock: Fix missing timespec64 check in pc_clock_settime() As Andrew pointed out, it will make sense that the PTP core checked timespec64 struct's tv_sec and tv_nsec range before calling ptp->info->settime64(). As the man manual of clock_settime() said, if tp.tv_sec is negative or tp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL, which include dynamic clocks which handles PTP clock, and the condition is consistent with timespec64_valid(). As Thomas suggested, timespec64_valid() only check the timespec is valid, but not ensure that the time is in a valid range, so check it ahead using timespec64_valid_strict() in pc_clock_settime() and return -EINVAL if not valid. There are some drivers that use tp->tv_sec and tp->tv_nsec directly to write registers without validity checks and assume that the higher layer has checked it, which is dangerous and will benefit from this, such as hclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(), and some drivers can remove the checks of itself.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-754 | CWE-754 CWE-754 Improper Check for Unusual or Exceptional Conditions

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 29f085345cde24566efb751f39e5d367c381c584 git Not specified
CNA Linux Linux affected 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 e0c966bd3e31911b57ef76cec4c5796ebd88e512 git Not specified
CNA Linux Linux affected 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 673a1c5a2998acbd429d6286e6cad10f17f4f073 git Not specified
CNA Linux Linux affected 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 c8789fbe2bbf75845e45302cba6ffa44e1884d01 git Not specified
CNA Linux Linux affected 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 27abbde44b6e71ee3891de13e1a228aa7ce95bfe git Not specified
CNA Linux Linux affected 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 a3f169e398215e71361774d13bf91a0101283ac2 git Not specified
CNA Linux Linux affected 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 1ff7247101af723731ea42ed565d54fb8f341264 git Not specified
CNA Linux Linux affected 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 d8794ac20a299b647ba9958f6d657051fc51a540 git Not specified
CNA Linux Linux affected 2.6.39 Not specified
CNA Linux Linux unaffected 2.6.39 semver Not specified
CNA Linux Linux unaffected 4.19.323 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.285 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.228 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.169 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.114 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.58 6.6.* semver Not specified
CNA Linux Linux unaffected 6.11.5 6.11.* semver Not specified
CNA Linux Linux unaffected 6.12 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/03/msg00002.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/01/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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