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CVE Vulnerability Details :
CVE-2026-64490
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-25 Jul, 2026 | 08:51
Updated At-25 Jul, 2026 | 08:51
Rejected At-
▼CVE Numbering Authority (CNA)
ALSA: virtio: Validate control metadata from the device

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.

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • sound/virtio/virtio_kctl.c
Default Status
unaffected
Versions
Affected
  • From d6568e3de42dd971a1356f7ba581e6600d53f0a0 before 3243563f99ef5d3949b934bd6390a5679405d0e1 (git)
  • From d6568e3de42dd971a1356f7ba581e6600d53f0a0 before 5da9742de22db0dbaa8d414214ab5e1bedde00f9 (git)
  • From d6568e3de42dd971a1356f7ba581e6600d53f0a0 before 21584672fd699abe1768241d6c501b2de6139b6a (git)
  • From d6568e3de42dd971a1356f7ba581e6600d53f0a0 before c77a6cbb36ff8cbc1f084d94f8dcda5250935271 (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • sound/virtio/virtio_kctl.c
Default Status
affected
Versions
Affected
  • 6.9
Unaffected
  • From 0 before 6.9 (semver)
  • From 6.12.96 through 6.12.* (semver)
  • From 6.18.39 through 6.18.* (semver)
  • From 7.1.4 through 7.1.* (semver)
  • From 7.2-rc1 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://git.kernel.org/stable/c/3243563f99ef5d3949b934bd6390a5679405d0e1
N/A
https://git.kernel.org/stable/c/5da9742de22db0dbaa8d414214ab5e1bedde00f9
N/A
https://git.kernel.org/stable/c/21584672fd699abe1768241d6c501b2de6139b6a
N/A
https://git.kernel.org/stable/c/c77a6cbb36ff8cbc1f084d94f8dcda5250935271
N/A
Hyperlink: https://git.kernel.org/stable/c/3243563f99ef5d3949b934bd6390a5679405d0e1
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/5da9742de22db0dbaa8d414214ab5e1bedde00f9
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/21584672fd699abe1768241d6c501b2de6139b6a
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/c77a6cbb36ff8cbc1f084d94f8dcda5250935271
Resource: N/A
Details not found