ALSA: virtio: Validate control metadata from the device
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.12.96, 6.18.39, 7.1.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From d6568e3de42dd971a1356f7ba581e6600d53f0a0 · fixed in 3243563f99ef5d3949b934bd6390a5679405d0e1; From d6568e3de42dd971a1356f7ba581e6600d53f0a0 · fixed in 5da9742de22db0dbaa8d414214ab5e1bedde00f9; From d6568e3de42dd971a1356f7ba581e6600d53f0a0 · fixed in 21584672fd699abe1768241d6c501b2de6139b6a; From d6568e3de42dd971a1356f7ba581e6600d53f0a0 · fixed in c77a6cbb36ff8cbc1f084d94f8dcda5250935271
- Linux Linux
6.9
- KernelLinux
From 6.9.0 · fixed in 6.12.96; From 6.13.0 · fixed in 6.18.39; From 6.19.0 · fixed in 7.1.4