CVE-2026-74502

CVE CVE-2026-74502EUVD EUVD-2026-59695Published 2026-08-15T12:27:27.000ZLast changed 2026-08-17T05:20:40.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: ALSA: ump: fix double free of out_cvts on rawmidi error snd_ump_attach_legacy_rawmidi() allocates the legacy conversion array ump->out_cvts and, on the snd_rawmidi_new() error path, frees it with kfree() but leaves ump->out_cvts pointing at the freed memory. When the endpoint is later torn down, snd_ump_endpoint_free() frees ump->out_cvts a second time, resulting in a double free. The host snd-usb-audio driver attaches the legacy rawmidi for any USB MIDI 2.0 (UMP) device, so a device that makes snd_rawmidi_new() fail reaches this path on enumeration. Clear ump->out_cvts after freeing it on the error path so it is not freed again during teardown. Discovered by XBOW, triaged by Baul Lee <baul.lee@xbow.com>

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: 7.1.8; patch: 0; 6.5; 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 <3302aaeac4f7ee6b775850db21d5f61064ce70ad; patch: 6.12.103; patch: 7.2; 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 <e84d2e53a05c78a04d1343eeb0f31a79456e79fc; patch: 6.18.44; 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 <032746c2dd9a4ea0774b04ac8a29e2ea628f106e; 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 <70c977815af0d997feb2d0c5d284d55689bf7051; patch: 6.6.151; 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 <c57001f55f97ef856fb6527e376c5c4a056a53a4

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

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Linux — Linux

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