8.1

CVE-2026-98261

cifs: Fix server use-after-free in cifs_chan_skip_or_disable()

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

cifs: Fix server use-after-free in cifs_chan_skip_or_disable()

When a secondary channel is no longer supported by the server,
cifs_chan_skip_or_disable() drops the channel reference with
cifs_put_tcp_session() and then continues to use the server pointer by
calling cifs_signal_cifsd_for_reconnect() on it and reading its
primary_server pointer. cifs_put_tcp_session() can drop the last
reference of the channel and tear it down, so both the channel and the
primary server (whose reference is also dropped by
cifs_put_tcp_session()) can be freed before they are signaled for
reconnect.

Signal the channel and the primary server and capture the primary
server pointer before dropping the channel reference with
cifs_put_tcp_session().
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 50e8363ecc85da49764781da90ebffe1a657b370
Version < 0338489960ddad6368bce55e8adbc176c523093d
Status affected
Version f591062bdbf4742b7f1622173017f19e927057b0
Version < edd52eae5fcfb8433b6bb0e7cd98db438fe01227
Status affected
Version f591062bdbf4742b7f1622173017f19e927057b0
Version < fcc0a935bb6e37ecbf7e4335061309f896f35780
Status affected
Version f591062bdbf4742b7f1622173017f19e927057b0
Version < 7a1b27780b113583a94256d58dabfe7c0d9286e7
Status affected
Version f591062bdbf4742b7f1622173017f19e927057b0
Version < 717e0a25036b6c92cecace30913b2d874a4c22b8
Status affected
Version d61ba1d71ea6039eca7ada870bf3f0c3c8fc12e4
Status affected
Version 6.6.15
Version < 6.6.158
Status affected
Version 6.7.3
Version < 6.8
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.8
Status affected
Version 0
Version < 6.8
Status unaffected
Version <= 6.6.*
Version 6.6.158
Status unaffected
Version <= 6.12.*
Version 6.12.112
Status unaffected
Version <= 6.18.*
Version 6.18.54
Status unaffected
Version <= 7.2.*
Version 7.2.8
Status unaffected
Version <= *
Version 7.3-rc4
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.44% 0.362
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.1 2.2 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/0338489960ddad6368bce55e8adbc176c523093d
https://git.kernel.org/stable/c/edd52eae5fcfb8433b6bb0e7cd98db438fe01227
https://git.kernel.org/stable/c/fcc0a935bb6e37ecbf7e4335061309f896f35780
https://git.kernel.org/stable/c/7a1b27780b113583a94256d58dabfe7c0d9286e7
https://git.kernel.org/stable/c/717e0a25036b6c92cecace30913b2d874a4c22b8