CVSS 5.5 · Medium EPSS 0,23%
Kerentanan Improper Check for Unusual or Exceptional Conditions pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 2.6.39 hingga sebelum 4.19.323 |
| linux | linux kernel | Versi 4.20 hingga sebelum 5.4.285 |
| linux | linux kernel | Versi 5.5 hingga sebelum 5.10.228 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.169 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.114 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.58 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.11.5 |
| linux | linux kernel | Versi 6.12 rc1 |
| linux | linux kernel | Versi 6.12 rc2 |
| linux | linux kernel | Versi 6.12 rc3 |