CVE-2026-64490High· 8.4▾ TwilightIn 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. Th…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 46.2 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
8.4 → 7
Last analysed / modified upstream
7 → 8.4
0.2% → 0.2%
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.
Linux >= d6568e3de42dd971a1356f7ba581e6600d53f0a0 < 3243563f99ef5d3949b934bd6390a5679405d0e1Linux >= d6568e3de42dd971a1356f7ba581e6600d53f0a0 < 5da9742de22db0dbaa8d414214ab5e1bedde00f9Linux >= d6568e3de42dd971a1356f7ba581e6600d53f0a0 < 21584672fd699abe1768241d6c501b2de6139b6aLinux >= d6568e3de42dd971a1356f7ba581e6600d53f0a0 < c77a6cbb36ff8cbc1f084d94f8dcda5250935271Linux 6.9Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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