CVE-2026-64490
CVE CVE-2026-64490EUVD EUVD-2026-48834Published 2026-07-25T08:51:48.000ZLast changed 2026-08-05T12:42:27.000ZCVSS 8.4
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: ALSA: virtio: Validate control metadata from the device virtio-snd control handling trusts the device-provided control type and value count returned by the device. That metadata is then used directly to index g_v2a_type_map[] in virtsnd_kctl_info(), and to size loops and memcpy() operations in virtsnd_kctl_get() and virtsnd_kctl_put() against fixed-size virtio_snd_ctl_value and snd_ctl_elem_value arrays. A buggy or malicious device can therefore trigger out-of-bounds access by advertising an invalid control type or an oversized value count. Validate control type and count once in virtsnd_kctl_parse_cfg(), before querying enumerated items or exposing the control to ALSA.
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: 6.18.39; patch: 7.2-rc1; 6.9; d6568e3de42dd971a1356f7ba581e6600d53f0a0 <c77a6cbb36ff8cbc1f084d94f8dcda5250935271; patch: 6.12.96; d6568e3de42dd971a1356f7ba581e6600d53f0a0 <5da9742de22db0dbaa8d414214ab5e1bedde00f9; patch: 7.1.4; d6568e3de42dd971a1356f7ba581e6600d53f0a0 <3243563f99ef5d3949b934bd6390a5679405d0e1; patch: 0; d6568e3de42dd971a1356f7ba581e6600d53f0a0 <21584672fd699abe1768241d6c501b2de6139b6a
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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