CVE-2023-52810
fs/jfs: Add check for negative db_l2nbperpage
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
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
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.12
References 9
git.kernel.org
- stable/c/cc61fcf7d1c99f148fe8ddfb5c6ed0bb75861f01
- stable/c/8f2964df6bfce9d92d81ca552010b8677af8d9dc
- stable/c/a81a56b4cbe3142cc99f6b98e8f9b3a631c768e1
- stable/c/524b4f203afcf87accfe387e846f33f916f0c907
- stable/c/5f148b16972e5f4592629b244d5109b15135f53f
- stable/c/0cb567e727339a192f9fd0db00781d73a91d15a6
- stable/c/491085258185ffc4fb91555b0dba895fe7656a45
- stable/c/1a7c53fdea1d189087544d9a606d249e93c4934b
- stable/c/525b861a008143048535011f3816d407940f4bfa