# CVE-2026-72446: linux: In the Linux kernel, the following vulnerability has been resolved:  ALSA: usb-audio: qcom: reject stream disable wit...

CVE-2026-72446 is fixed in linux on 1 platform by DEBIAN-CVE-2026-72446 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-72446
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 15, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.1.5-1 | [DEBIAN-CVE-2026-72446](https://patchblox.com/security/data/fix/linux/debian-cve-2026-72446.md) | Aug 15, 2026 |

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Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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