Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: Use snd_card_free_when_closed() at disconnection The USB disconnect callback is supposed to be short and not too-long waiting. OTOH, the current code uses snd_card_free() at disconnection, but this waits for the close of all used fds, hence it can take long. It eventually blocks the upper layer USB ioctls, which may trigger a soft lockup. An easy workaround is to replace snd_card_free() with snd_card_free_when_closed(). This variant returns immediately while the release of resources is done asynchronously by the card device release at the last close. This patch also splits the code to the disconnect and the free phases; the former is called immediately at the USB disconnect callback while the latter is called from the card destructor.
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
523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < 3993edf44d3df7b6e8c753eac6ac8783473fcbabaffected523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < ebad462eec93b0f701dfe4de98990e7355283801affected523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < 4dd821dcbfcecf7af6a08370b0b217cde2818acfaffected523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < cadf1d8e9ddcd74584ec961aeac14ac549b261d8affected523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < 237f3faf0177bdde728fa3106d730d806436aa4daffected523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < 4507a8b9b30344c5ddd8219945f446d47e966a6daffected523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < dd0de8cb708951cebf727aa045e8242ba651bb52affected523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < a3f9314752dbb6f6aa1f0f2b4c58243bda800738affected523f1dce37434a9a6623bf46e7893e2b4b10ac3c to < b04dcbb7f7b1908806b7dc22671cdbe78ff2b82caffected
Linux Linux
Default version status: affected
2.6.22affected0 to < 2.6.22unaffected4.19.325 to ≤ 4.19.*unaffected5.4.287 to ≤ 5.4.*unaffected5.10.231 to ≤ 5.10.*unaffected5.15.174 to ≤ 5.15.*unaffected6.1.120 to ≤ 6.1.*unaffected6.6.64 to ≤ 6.6.*unaffected6.11.11 to ≤ 6.11.*unaffected6.12.2 to ≤ 6.12.*unaffected6.13 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3993edf44d3df7b6e8c753eac6ac8783473fcbab ↗
- https://git.kernel.org/stable/c/ebad462eec93b0f701dfe4de98990e7355283801 ↗
- https://git.kernel.org/stable/c/4dd821dcbfcecf7af6a08370b0b217cde2818acf ↗
- https://git.kernel.org/stable/c/cadf1d8e9ddcd74584ec961aeac14ac549b261d8 ↗
- https://git.kernel.org/stable/c/237f3faf0177bdde728fa3106d730d806436aa4d ↗
- https://git.kernel.org/stable/c/4507a8b9b30344c5ddd8219945f446d47e966a6d ↗
- https://git.kernel.org/stable/c/dd0de8cb708951cebf727aa045e8242ba651bb52 ↗
- https://git.kernel.org/stable/c/a3f9314752dbb6f6aa1f0f2b4c58243bda800738 ↗
- https://git.kernel.org/stable/c/b04dcbb7f7b1908806b7dc22671cdbe78ff2b82c ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html ↗