CVE-2025-21811 — Use After Free in Linux
Severity
7.8HIGHNVD
OSV8.8OSV7.1OSV5.9OSV5.5
EPSS
0.0%
top 91.70%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 27
Latest updateDec 16
Description
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: protect access to buffers with no active references
nilfs_lookup_dirty_data_buffers(), which iterates through the buffers
attached to dirty data folios/pages, accesses the attached buffers without
locking the folios/pages.
For data cache, nilfs_clear_folio_dirty() may be called asynchronously
when the file system degenerates to read only, so
nilfs_lookup_dirty_data_buffers() still has the potential to cause use
after …
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages7 packages
▶CVEListV5linux/linux8c26c4e2694a163d525976e804d81cd955bbb40c — e1fc4a90a90ea8514246c45435662531975937d9+8