CVE-2026-72446

CVE CVE-2026-72446EUVD EUVD-2026-59345Published 2026-08-15T05:56:56.000ZLast changed 2026-08-17T05:44:17.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: qcom: reject stream disable with no active interface handle_uaudio_stream_req() resolves an interface index with info_idx_from_ifnum(), which returns -EINVAL when no interface matches. The enable branch and the response: cleanup label both guard against a negative index, but the disable branch does not: it forms info = &uadev[pcm_card_num].info[info_idx] and dereferences it. uadev[].info is a pointer allocated only when a stream is first enabled, so a negative info_idx on the disable path is unsafe in two ways: - If the card was never enabled, .info is NULL and &info[-EINVAL] is a wild pointer; reading info->data_ep_pipe faults (kernel oops). - If the card was enabled at least once (.info allocated) and the disable names an interface that does not match, &info[-EINVAL] points before the allocation; info->data_ep_pipe / info->sync_ep_pipe are an out-of-bounds slab read and, when non-zero, an out-of-bounds 4-byte write (both pipe fields are cleared to 0). That is memory corruption, not just a NULL dereference. The request is reachable from unprivileged local userspace over AF_QIPCRTR. Reject a disable request with no resolved interface, matching the guard the enable path already has.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 0; patch: 6.18.40; patch: 7.1.5; 6.16; 326bbc348298ab0946c5560defe024a5f6ef28bb <25a867aa5e67a84333fa6e5c21292c5bcff86b90; patch: 7.2; 326bbc348298ab0946c5560defe024a5f6ef28bb <bdb640be82e645e2828731648f485224d0c2587b; 326bbc348298ab0946c5560defe024a5f6ef28bb <a22356d1f731553e99aa2707dbd38c659bdd28d8

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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