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

Type: advisorySources: OSV

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.

Products
Kernel
Affected versions
Not specified
Fixed versions
4.19.323, 5.10.228, 5.15.169, 5.4.285, 6.1.114, 6.11.5, 6.6.58
CVEs
CVE-2024-50195
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 15:23 UTC · Revision 1

Source evidence

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

core-osv · Original source

Published 8 Nov 2024, 05:54 UTC

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.

osv:CVE-2024-50195

Kernel

Fixed versions: 4.19.323, 5.4.285, 5.10.228, 5.15.169, 6.1.114, 6.6.58, 6.11.5

Complete source record
{
  "id": "39d90c20e12f1c0d92d1ffeea6f646999181b5df01bc18d734a825f1d4053be5",
  "url": "https://osv.dev/vulnerability/CVE-2024-50195",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "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.",
    "evidence": "osv:CVE-2024-50195",
    "products": [
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          "evidence": "/affected/1/package/name"
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            "evidence": "/affected/1/ranges"
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          {
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            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
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    "severity": "high",
    "structured": {
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      "aliases": [
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      ],
      "modified": "2026-10-28T02:30:36.834537221Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264",
        "https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe",
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        "https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2",
        "https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01",
        "https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540",
        "https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50195.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-50195",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50195.json"
      }
    },
    "related_cves": [
      {
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        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504076,
  "published_at": "2024-11-08T05:54:10.183+00:00"
}