8.8

CVE-2026-74535

Bluetooth: ISO: avoid deadlocks in iso_sock_timeout

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

Bluetooth: ISO: avoid deadlocks in iso_sock_timeout

iso_sock_timeout() takes lock_sock, so sync disabling the timer while
holding that lock may deadlock.

iso_sock_timeout() may also run concurrently with iso_conn_del(), which
leads to UAF

        [Task 1]                      [Task hdev->workqueue]
        iso_sock_timeout              iso_conn_del
          iso_conn_hold_unless_zero     iso_chan_del
                           `------------> iso_conn_put
                                      caller frees hcon
          iso_conn_put
            iso_conn_free
              conn->hcon->iso_data = NULL; /* UAF */

Fix the deadlock by removing the disable from the lock_sock sections.
Move the timer from iso_conn to iso_pinfo to decouple it from iso_conn
which may need to be freed in lock_sock section. Convert some of the
clear_timer to disable_timer.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version a58d0f5dac322e16cc75334d000666512341bde5
Version < 16d89a63e08280abeef7218970a3bbd7ca62b021
Status affected
Version dc26097bdb864a0d5955b9a25e43376ffc1af99b
Version < 82e982f54f962f72646868ddbb2c3bd9ea178568
Status affected
Version dc26097bdb864a0d5955b9a25e43376ffc1af99b
Version < 3c3d5f85db80145636bb991a6005e2760012b985
Status affected
Version dc26097bdb864a0d5955b9a25e43376ffc1af99b
Version < 200fa1629c57a3ca2b03d3ca63fd3a9bfd910c43
Status affected
Version f53e7489273dc2bb307bf50f319b3762d45534f0
Status affected
Version 6.12.2
Version < 6.12.103
Status affected
Version 6.11.11
Version < 6.12
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.13
Status affected
Version 0
Version < 6.13
Status unaffected
Version <= 6.12.*
Version 6.12.103
Status unaffected
Version <= 6.18.*
Version 6.18.44
Status unaffected
Version <= 7.1.*
Version 7.1.8
Status unaffected
Version <= *
Version 7.2
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 0.24% 0.155
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.8 2.8 5.9
CVSS:3.1/AV:A/AC:L/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/16d89a63e08280abeef7218970a3bbd7ca62b021
https://git.kernel.org/stable/c/82e982f54f962f72646868ddbb2c3bd9ea178568
https://git.kernel.org/stable/c/3c3d5f85db80145636bb991a6005e2760012b985
https://git.kernel.org/stable/c/200fa1629c57a3ca2b03d3ca63fd3a9bfd910c43