erofs: validate the extent length for uncompressed pclusters
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.0.16, 6.1.2
- 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: total
Summary
In the Linux kernel, the following vulnerability has been resolved: erofs: validate the extent length for uncompressed pclusters syzkaller reported a KASAN use-after-free: https://syzkaller.appspot.com/bug?extid=2ae90e873e97f1faf6f2 The referenced fuzzed image actually has two issues: • m_pa == 0 as a non-inlined pcluster; • The logical length is longer than its physical length. The first issue has already been addressed. This patch addresses the second issue by checking the extent length validity.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 02827e1796b33f1794966f5c3101f8da2dfa9c1d · fixed in dc8b6bd587b13b85aff6e9d36cdfcd3f955cac9e; From 02827e1796b33f1794966f5c3101f8da2dfa9c1d · fixed in 40c73b2ea9611b5388807be406f30f5e4e1162da; From 02827e1796b33f1794966f5c3101f8da2dfa9c1d · fixed in c505feba4c0d76084e56ec498ce819f02a7043ae
- Linux Linux
4.19
- KernelLinux
From 4.19.0 · fixed in 6.0.16; From 6.1.0 · fixed in 6.1.2