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CVE-2026-63871

Bluetooth: ISO: Fix data-race on iso_pi fields in hci_get_route calls

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

Bluetooth: ISO: Fix data-race on iso_pi fields in hci_get_route calls

iso_connect_bis(), iso_connect_cis(), iso_listen_bis(), and
iso_conn_big_sync() call hci_get_route() using iso_pi(sk)->dst,
iso_pi(sk)->src, and iso_pi(sk)->src_type without holding lock_sock().

These fields may be modified concurrently by connect() or setsockopt()
on the same socket, resulting in data-races reported by KCSAN.

Fix this by snapshotting the required fields under lock_sock() before
calling hci_get_route().

BUG: KCSAN: data-race in memcmp+0x45/0xb0

race at unknown origin, with read to 0xffff8880122135cf of 1 bytes
by task 333 on cpu 1:
 memcmp+0x45/0xb0
 hci_get_route+0x27e/0x490
 iso_connect_cis+0x4c/0xa10
 iso_sock_connect+0x60e/0xb30
 __sys_connect_file+0xbd/0xe0
 __sys_connect+0xe0/0x110
 __x64_sys_connect+0x40/0x50
 x64_sys_call+0xcad/0x1c60
 do_syscall_64+0x133/0x590
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 241f51931c35085449502c10f64fb3ecd6e02171
Version < 9798f7d41d85ff763afd1f1cc0533b5c416c8348
Status affected
Version 241f51931c35085449502c10f64fb3ecd6e02171
Version < ab84fd7779a2a7ff5d2c8eac212c43733f56216e
Status affected
Version 241f51931c35085449502c10f64fb3ecd6e02171
Version < 859bb1f4cb615d98c9c1ab2bd76ebb0b8fe46020
Status affected
Version 241f51931c35085449502c10f64fb3ecd6e02171
Version < 9ca7053d6215d89c33f28893bfd1625a32919d3f
Status affected
Version c524f9561c657b8af26dd4f67092b8928261aa62
Status affected
Version 6.1.9
Version < 6.2
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.2
Status affected
Version 0
Version < 6.2
Status unaffected
Version <= 6.12.*
Version 6.12.94
Status unaffected
Version <= 6.18.*
Version 6.18.36
Status unaffected
Version <= 7.0.*
Version 7.0.13
Status unaffected
Version <= *
Version 7.1
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 0.16% 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/9798f7d41d85ff763afd1f1cc0533b5c416c8348
https://git.kernel.org/stable/c/ab84fd7779a2a7ff5d2c8eac212c43733f56216e
https://git.kernel.org/stable/c/859bb1f4cb615d98c9c1ab2bd76ebb0b8fe46020
https://git.kernel.org/stable/c/9ca7053d6215d89c33f28893bfd1625a32919d3f