Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — posix-clock: Fix missing timespec64 check in pc_clock_settime()
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0023 14.6 —
AFFECTED
Product Versions Fixed
Linux 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 – —
Linux 2.6.39 – 4.19.323
TIMELINE
Oct 21 Reserved by Linux
Nov 8 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2024-50195 (Linux). CVSS 7.1 → 5.5 (NVD).
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| October 21, 2024 | Reserved | Reserved by Linux |
| November 8, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2024-50195 (Linux). CVSS 7.1 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 0606f422b453f76c31ab2b1bd52943ff06a2dcf2 | — |
| Linux | Linux | — | 2.6.39 | 4.19.323 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-50195 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.