ALSA: ump: fix double free of out_cvts on rawmidi error (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.17 % · centile 6 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
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Description
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>
Références
- https://git.kernel.org/stable/c/e84d2e53a05c78a04d1343eeb0f31a79456e79fc
- https://git.kernel.org/stable/c/3302aaeac4f7ee6b775850db21d5f61064ce70ad
- https://git.kernel.org/stable/c/032746c2dd9a4ea0774b04ac8a29e2ea628f106e
- https://git.kernel.org/stable/c/c57001f55f97ef856fb6527e376c5c4a056a53a4
- https://git.kernel.org/stable/c/70c977815af0d997feb2d0c5d284d55689bf7051
Références européennes
- ENISA EUVD · EUVD-2026-59695
- GCVE · GCVE-0-2026-74502
Avis du CERT-FR
- CERTFR-2026-AVI-1232 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1090 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 < e84d2e53a05c78a04d1343eeb0f31a79456e79fc ; affected 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 < 3302aaeac4f7ee6b775850db21d5f61064ce70ad ; affected 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 < 032746c2dd9a4ea0774b04ac8a29e2ea628f106e ; affected 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 < c57001f55f97ef856fb6527e376c5c4a056a53a4 ; affected 33cd7630782df2230529c3e8f1a6d0ae9cd6ab49 < 70c977815af0d997feb2d0c5d284d55689bf7051 |
| Linux · Linux | affected 6.5 ; unaffected 0 < 6.5 ; unaffected 6.6.151 ≤ 6.6.* ; unaffected 6.12.103 ≤ 6.12.* ; unaffected 6.18.44 ≤ 6.18.* ; unaffected 7.1.8 ≤ 7.1.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |