CVE-2024-50195
posix-clock: Fix missing timespec64 check in pc_clock_settime()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2024-10-21 CVE Reserved
- 2024-11-08 CVE Published
- 2024-11-08 CVE Updated
- ---------- EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (7)
URL | Tag | Source |
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https://git.kernel.org/stable/c/0606f422b453f76c31ab2b1bd52943ff06a2dcf2 | Vuln. Introduced |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.39 < 5.10.228 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.39 < 5.10.228" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.39 < 5.15.169 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.39 < 5.15.169" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.39 < 6.1.114 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.39 < 6.1.114" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.39 < 6.6.58 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.39 < 6.6.58" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.39 < 6.11.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.39 < 6.11.5" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 2.6.39 < 6.12-rc4 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.39 < 6.12-rc4" | en |
Affected
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