CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2023-52810
High (7.8) in linux linux kernel. EPSS 0.3% chance of exploitation in the next 30 days.
In the Linux kernel, the following vulnerability has been resolved:
fs/jfs: Add check for negative db_l2nbperpage
l2nbperpage is log2(number of blks per page), and the minimum legal
value should be 0, not negative.
In the case of l2nbperpage being negative, an error will occur
when subsequently used as shift exponent.
Syzbot reported this bug:
UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:799:12
shift exponent -16777216 is negative
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)
- CWE
- CWE-1335
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
References
- https://git.kernel.org/stable/c/0cb567e727339a192f9fd0db00781d73a91d15a6
- https://git.kernel.org/stable/c/1a7c53fdea1d189087544d9a606d249e93c4934b
- https://git.kernel.org/stable/c/491085258185ffc4fb91555b0dba895fe7656a45
- https://git.kernel.org/stable/c/524b4f203afcf87accfe387e846f33f916f0c907
- https://git.kernel.org/stable/c/525b861a008143048535011f3816d407940f4bfa