nilfs2: fix data corruption in dsync block recovery for small block sizes
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix data corruption in dsync block recovery for small block sizes The helper function nilfs_recovery_copy_block() of nilfs_recovery_dsync_blocks(), which recovers data from logs created by data sync writes during a mount after an unclean shutdown, incorrectly calculates the on-page offset when copying repair data to the file's page cache. In environments where the block size is smaller than the page size, this flaw can cause data corruption and leak uninitialized memory bytes during the recovery process. Fix these issues by correcting this byte offset calculation on the page.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.30
References 8
git.kernel.org
- stable/c/5278c3eb6bf5896417572b52adb6be9d26e92f65
- stable/c/a6efe6dbaaf504f5b3f8a5c3f711fe54e7dda0ba
- stable/c/364a66be2abdcd4fd426ffa44d9b8f40aafb3caa
- stable/c/120f7fa2008e3bd8b7680b4ab5df942decf60fd5
- stable/c/9c9c68d64fd3284f7097ed6ae057c8441f39fcd3
- stable/c/2e1480538ef60bfee5473dfe02b1ecbaf1a4aa0d
- stable/c/2000016bab499074e6248ea85aeea7dd762355d9
- stable/c/67b8bcbaed4777871bb0dcc888fb02a614a98ab1