f2fs: compress: fix to cover normal cluster write with cp_rwsem
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.3%
exploitation probability
0.3%top 81% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
f2fs: compress: fix to cover normal cluster write with cp_rwsem
When we overwrite compressed cluster w/ normal cluster, we should
not unlock cp_rwsem during f2fs_write_raw_pages(), otherwise data
will be corrupted if partial blocks were persisted before CP & SPOR,
due to cluster metadata wasn't updated atomically.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/2b1b14d9fc94b8feae20808684c8af28ec80f45bhttps://git.kernel.org/stable/c/52982edfcefd475cc34af663d5c47c0cddaa5739https://git.kernel.org/stable/c/542c8b3c774a480bfd0804291a12f6f2391b0cd1https://git.kernel.org/stable/c/75abfd61392b1db391bde6d738a30d685b843286https://git.kernel.org/stable/c/7d420eaaa18ec8e2bb4eeab8c65c00492ef6f416https://git.kernel.org/stable/c/fd244524c2cf07b5f4c3fe8abd6a99225c76544b