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CVE-2025-39997

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

ALSA: usb-audio: fix race condition to UAF in snd_usbmidi_free

The previous commit 0718a78f6a9f ("ALSA: usb-audio: Kill timer properly at
removal") patched a UAF issue caused by the error timer.

However, because the error timer kill added in this patch occurs after the
endpoint delete, a race condition to UAF still occurs, albeit rarely.

Additionally, since kill-cleanup for urb is also missing, freed memory can
be accessed in interrupt context related to urb, which can cause UAF.

Therefore, to prevent this, error timer and urb must be killed before
freeing the heap memory.
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Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version < dc4874366cf6cf4a31d8fa4b7f0e2a5b2d7647ba
Version 647410a7da46067953a53c0d03f8680eff570959
Status affected
Version < 647d6b8d22be12842fde6ed0c56859ebc615f21e
Version c611b9e55174e439dcd85a72969b43a95f3827a4
Status affected
Version < af600e7f5526d16146b3ae99f6ad57bfea79ca33
Version 0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1
Status affected
Version < 353d8c715cc951a980728133c9dd64ca5a0a186c
Version 0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1
Status affected
Version < 9f2c0ac1423d5f267e7f1d1940780fc764b0fee3
Version 0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1
Status affected
Version 62066758d2ae169278e5d6aea5995b1b6f6ddeb5
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.16
Status affected
Version < 6.16
Version 0
Status unaffected
Version <= 6.16.*
Version 6.16.11
Status unaffected
Version <= 6.17.*
Version 6.17.1
Status unaffected
Version <= *
Version 6.18
Status unaffected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.06
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String