CVE-2026-98266: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ALSA: core: Fix potential UAF after asynchronous card release Usually a sound driver releases the resources assigned to the card via snd_card_free(), and it synchronizes with the whole release procedure. However, when the card is released asynchronously via snd_card_free_when_closed() like USB-audio driver, the situation is slightly different; although the snd_card_disconnect() call at the disconnection guarantees that any newer accesses will be gated, the in-flight tasks might be still accessing to the underlying card->dev device even after the disconnection, which would cause a use-after-free in the end, as reported by fuzzers. For addressing the bug above, this patch takes the refcount of card->dev at initialization of the card object, and releases at its destructor. This assures the availability of the card->dev in its whole lifecycle.

Засегнати продукти

• Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 5c0df40aa577e405c458e44e8d458dd78407f4af; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 2dec4642589a663e064e4411d92d6e8fa250d53b; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 398b21608955c9712a012355b69a39407367edc9; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди fd95e68df6fe66344161a1329cbe5e5805e7b704
• Linux Linux: 2.6.12; преди 2.6.12; 6.12.112 до 6.12.*; 6.18.54 до 6.18.*; 7.2.8 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-98266
• https://nvd.nist.gov/vuln/detail/CVE-2026-98266
• https://git.kernel.org/stable/c/5c0df40aa577e405c458e44e8d458dd78407f4af
• https://git.kernel.org/stable/c/2dec4642589a663e064e4411d92d6e8fa250d53b
• https://git.kernel.org/stable/c/398b21608955c9712a012355b69a39407367edc9
• https://git.kernel.org/stable/c/fd95e68df6fe66344161a1329cbe5e5805e7b704