-

CVE-2026-98117

cachefiles: Fix potential UAF/KASAN warning

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

cachefiles: Fix potential UAF/KASAN warning

Currently, trace_cachefiles_coherency() is being passed a pointer to a
__be64 lain over the coherency data in struct cachefiles_xattr so that it
can display the first 8 bytes.  However, the data is of variable length and
could even be 0 bytes.  This could lead to a UAF or KASAN warning.

Fix this by making sure the buffer has room for at least 8 bytes and that
those 8 bytes are pre-cleared.

Further, those bytes are not 8-byte aligned, so fix the tracepoint to
extract the data as four 2-byte words (they are 2-byte aligned) and
reassemble the __be64.  The compiler will convert this into a single 8-byte
load where the CPU supports it.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0
Version < 68d459e6e609c31f96a203dd6eec60c634f155e1
Status affected
Version 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0
Version < 93488ea378b4427598cace558236c110515d743b
Status affected
Version 229105e5cfd9832a9ef1368c96e0098ec3a5fbf0
Version < a67632c8c2688d6e0091529bcefe54bc5ee80e9b
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.14
Status affected
Version 0
Version < 6.14
Status unaffected
Version <= 6.18.*
Version 6.18.53
Status unaffected
Version <= 7.2.*
Version 7.2.7
Status unaffected
Version <= *
Version 7.3-rc3
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 0.17% 0.053
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/68d459e6e609c31f96a203dd6eec60c634f155e1
https://git.kernel.org/stable/c/93488ea378b4427598cace558236c110515d743b
https://git.kernel.org/stable/c/a67632c8c2688d6e0091529bcefe54bc5ee80e9b