exfat: fix out-of-bounds access of directory entries
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- Fix
- Fixed in 6.6.160, 6.11.11, 6.12.2
- 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
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: exfat: fix out-of-bounds access of directory entries In the case of the directory size is greater than or equal to the cluster size, if start_clu becomes an EOF cluster(an invalid cluster) due to file system corruption, then the directory entry where ei->hint_femp.eidx hint is outside the directory, resulting in an out-of-bounds access, which may cause further file system corruption. This commit adds a check for start_clu, if it is an invalid cluster, the file or directory will be treated as empty.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 · fixed in 82dc96f0f4eec8afdde8467d21d1b6b989dbb20a; From 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 · fixed in a0120d6463368378539ef928cf067d02372efb8c; From 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 · fixed in 3ddd1cb2b458ff6a193bc845f408dfff217db29e; From 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 · fixed in 184fa506e392eb78364d9283c961217ff2c0617b
- Linux Linux
5.7
- KernelLinux
From 5.7.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.11.11; From 6.12.0 · fixed in 6.12.2