CVE-2024-50195 (GCVE-0-2024-50195)

Vulnerability from cvelistv5 – Published: 2024-11-08 05:54 – Updated: 2025-11-03 22:26
VLAI?
Title
posix-clock: Fix missing timespec64 check in pc_clock_settime()
Summary
In 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.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < 29f085345cde24566efb751f39e5d367c381c584 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < e0c966bd3e31911b57ef76cec4c5796ebd88e512 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < 673a1c5a2998acbd429d6286e6cad10f17f4f073 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < c8789fbe2bbf75845e45302cba6ffa44e1884d01 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < 27abbde44b6e71ee3891de13e1a228aa7ce95bfe (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < a3f169e398215e71361774d13bf91a0101283ac2 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < 1ff7247101af723731ea42ed565d54fb8f341264 (git)
Affected: 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 , < d8794ac20a299b647ba9958f6d657051fc51a540 (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.39
Unaffected: 0 , < 2.6.39 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.228 , ≤ 5.10.* (semver)
Unaffected: 5.15.169 , ≤ 5.15.* (semver)
Unaffected: 6.1.114 , ≤ 6.1.* (semver)
Unaffected: 6.6.58 , ≤ 6.6.* (semver)
Unaffected: 6.11.5 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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\"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/time/posix-clock.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584\"}, {\"url\": \"https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512\"}, {\"url\": \"https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073\"}, {\"url\": \"https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01\"}, {\"url\": \"https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe\"}, {\"url\": \"https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2\"}, {\"url\": \"https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264\"}, {\"url\": \"https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nposix-clock: Fix missing timespec64 check in pc_clock_settime()\\n\\nAs Andrew pointed out, it will make sense that the PTP core\\nchecked timespec64 struct\u0027s tv_sec and tv_nsec range before calling\\nptp-\u003einfo-\u003esettime64().\\n\\nAs the man manual of clock_settime() said, if tp.tv_sec is negative or\\ntp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL,\\nwhich include dynamic clocks which handles PTP clock, and the condition is\\nconsistent with timespec64_valid(). As Thomas suggested, timespec64_valid()\\nonly check the timespec is valid, but not ensure that the time is\\nin a valid range, so check it ahead using timespec64_valid_strict()\\nin pc_clock_settime() and return -EINVAL if not valid.\\n\\nThere are some drivers that use tp-\u003etv_sec and tp-\u003etv_nsec directly to\\nwrite registers without validity checks and assume that the higher layer\\nhas checked it, which is dangerous and will benefit from this, such as\\nhclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(),\\nand some drivers can remove the checks of itself.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.323\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.228\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.169\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.114\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.58\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.5\", \"versionStartIncluding\": \"2.6.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"2.6.39\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:48:26.517Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-50195\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T20:27:07.870Z\", \"dateReserved\": \"2024-10-21T19:36:19.968Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-11-08T05:54:10.183Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.