7.8

CVE-2026-63812

f2fs: fix incorrect FI_NO_EXTENT handling in __destroy_extent_node()

In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix incorrect FI_NO_EXTENT handling in __destroy_extent_node()

When __destroy_extent_node() sets the inode flag FI_NO_EXTENT, it does
not reset the length of the largest extent to 0 and update the inode
folio. Since modifications to the extent tree are disallowed afterward,
the cached largest extent may become stale. This can trigger the
following error in xfstests generic/388:

F2FS-fs (dm-0): sanity_check_extent_cache: inode (ino=1761) extent info [220057, 57, 6] is incorrect, run fsck to fix

In the f2fs_drop_inode path, __destroy_extent_node() does not need to
guarantee that et->node_cnt is 0, because concurrency with writeback
is expected in this path, and writeback may update the extent cache.

This patch reverts commit ed78aeebef05 ("f2fs: fix node_cnt race between
extent node destroy and writeback"), and remove the unnecessary zero
check of et->node_cnt.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 42dd1c91f993431d0b399502479d00e6ad1bca71
Version < 7e4d8f98be63f98856a5176b9188dada6e7ba9ee
Status affected
Version ab1eaf9d5c99042f5b0243bf67a06283a4c0757f
Version < 58a5deb220bcac4c73bf58954c0845644c997487
Status affected
Version b0e4395870eb3441ddc959f6710b5f6ca61aff26
Version < 20190e498057997532c7f186d081011f18e0a462
Status affected
Version ed78aeebef05212ef7dca93bd931e4eff67c113f
Version < edf12cbeeeabe799bd2ee21fdb5c336cce6fbad7
Status affected
Version ed78aeebef05212ef7dca93bd931e4eff67c113f
Version < 1f70ddb28a3c71df124da5fa4040c808116d6bb9
Status affected
Version 0559a0e962aacbb47519e26ee663be04b72dcb92
Status affected
Version 6.6.140
Version < 6.6.144
Status affected
Version 6.12.88
Version < 6.12.95
Status affected
Version 6.18.30
Version < 6.18.38
Status affected
Version 7.0.7
Version < 7.1
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 7.1
Status affected
Version 0
Version < 7.1
Status unaffected
Version <= 6.6.*
Version 6.6.144
Status unaffected
Version <= 6.12.*
Version 6.12.95
Status unaffected
Version <= 6.18.*
Version 6.18.38
Status unaffected
Version <= 7.1.*
Version 7.1.3
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.021
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/7e4d8f98be63f98856a5176b9188dada6e7ba9ee
https://git.kernel.org/stable/c/58a5deb220bcac4c73bf58954c0845644c997487
https://git.kernel.org/stable/c/20190e498057997532c7f186d081011f18e0a462
https://git.kernel.org/stable/c/edf12cbeeeabe799bd2ee21fdb5c336cce6fbad7
https://git.kernel.org/stable/c/1f70ddb28a3c71df124da5fa4040c808116d6bb9