CVE - CVE-2024-50195

CVE-ID
CVE-2024-50195	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264 URL:https://git.kernel.org/stable/c/1ff7247101af723731ea42ed565d54fb8f341264 MISC:https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe URL:https://git.kernel.org/stable/c/27abbde44b6e71ee3891de13e1a228aa7ce95bfe MISC:https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584 URL:https://git.kernel.org/stable/c/29f085345cde24566efb751f39e5d367c381c584 MISC:https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073 URL:https://git.kernel.org/stable/c/673a1c5a2998acbd429d6286e6cad10f17f4f073 MISC:https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2 URL:https://git.kernel.org/stable/c/a3f169e398215e71361774d13bf91a0101283ac2 MISC:https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01 URL:https://git.kernel.org/stable/c/c8789fbe2bbf75845e45302cba6ffa44e1884d01 MISC:https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540 URL:https://git.kernel.org/stable/c/d8794ac20a299b647ba9958f6d657051fc51a540 MISC:https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512 URL:https://git.kernel.org/stable/c/e0c966bd3e31911b57ef76cec4c5796ebd88e512
Assigning CNA
kernel.org
Date Record Created
20241021	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241021)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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