Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
06513dd6d32c37d0364db8488cfdf3e14da238a8 to < e63f049c7764b615d1d50cb486745fa63372b42daffectedefaf61052b8ff9ee8968912fbaf02c2847c78ede to < e16985513e89466a236d2a7c202783b4dd0c5a46affected647410a7da46067953a53c0d03f8680eff570959 to < dc4874366cf6cf4a31d8fa4b7f0e2a5b2d7647baaffectedc611b9e55174e439dcd85a72969b43a95f3827a4 to < 647d6b8d22be12842fde6ed0c56859ebc615f21eaffected0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1 to < af600e7f5526d16146b3ae99f6ad57bfea79ca33affected0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1 to < 353d8c715cc951a980728133c9dd64ca5a0a186caffected0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1 to < 9f2c0ac1423d5f267e7f1d1940780fc764b0fee3affected62066758d2ae169278e5d6aea5995b1b6f6ddeb5affected6.1.167 to < 6.1.175affected6.15.3 to < 6.16affected
Linux Linux
Default version status: affected
6.16affected0 to < 6.16unaffected6.1.175 to ≤ 6.1.*unaffected6.16.11 to ≤ 6.16.*unaffected6.17.1 to ≤ 6.17.*unaffected6.18 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/e63f049c7764b615d1d50cb486745fa63372b42d ↗
- https://git.kernel.org/stable/c/e16985513e89466a236d2a7c202783b4dd0c5a46 ↗
- https://git.kernel.org/stable/c/dc4874366cf6cf4a31d8fa4b7f0e2a5b2d7647ba ↗
- https://git.kernel.org/stable/c/647d6b8d22be12842fde6ed0c56859ebc615f21e ↗
- https://git.kernel.org/stable/c/af600e7f5526d16146b3ae99f6ad57bfea79ca33 ↗
- https://git.kernel.org/stable/c/353d8c715cc951a980728133c9dd64ca5a0a186c ↗
- https://git.kernel.org/stable/c/9f2c0ac1423d5f267e7f1d1940780fc764b0fee3 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗