media: usbtv: keep device alive while ALSA card exists
Summary
| CVE | CVE-2026-90032 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-16 11:17:16 UTC |
| Updated | 2026-09-16 15:18:26 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: media: usbtv: keep device alive while ALSA card exists The ALSA PCM callbacks store the driver state in pcm->private_data. An open PCM file can outlive USB disconnect because usbtv_audio_free() uses snd_card_free_when_closed(). The disconnect path can then drop the V4L2 device reference and free struct usbtv before ALSA releases the substream, so a later close dereferences freed memory in snd_usbtv_pcm_close(). Take a V4L2 device reference for the ALSA card and drop it from the card private_free callback. This keeps struct usbtv valid until ALSA has closed the remaining files and freed the card. |
Risk And Classification
Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 63ddf68de52efaac40a9287e44266ac30e71dd36 97b5e8b22b98e287481a97a9a4cfebbb348738a5 git | Not specified |
| CNA | Linux | Linux | affected 63ddf68de52efaac40a9287e44266ac30e71dd36 503be26ff888cb3576e55d251895d290e8146f27 git | Not specified |
| CNA | Linux | Linux | affected 63ddf68de52efaac40a9287e44266ac30e71dd36 be0f7745f883386e5263b4e475686a81dfa87175 git | Not specified |
| CNA | Linux | Linux | affected 63ddf68de52efaac40a9287e44266ac30e71dd36 67374e3a00814dcdd46e9feca61f69f7f2d81957 git | Not specified |
| CNA | Linux | Linux | affected 63ddf68de52efaac40a9287e44266ac30e71dd36 239d1683e08b2aee2a15ef35706e1ea9a76681d8 git | Not specified |
| CNA | Linux | Linux | affected 63ddf68de52efaac40a9287e44266ac30e71dd36 7690a86b193271322cd31ab77349a87aa10858e4 git | Not specified |
| CNA | Linux | Linux | affected 63ddf68de52efaac40a9287e44266ac30e71dd36 1618257cb0aba4ce342ae8c0228368c24161f5fb git | Not specified |
| CNA | Linux | Linux | affected 63ddf68de52efaac40a9287e44266ac30e71dd36 fc530fe168bb2b745a93f553ad21fc25fd9cba3d git | Not specified |
| CNA | Linux | Linux | affected 3.18 | Not specified |
| CNA | Linux | Linux | unaffected 3.18 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.270 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.221 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.188 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.157 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.110 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.51 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.5 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/503be26ff888cb3576e55d251895d290e8146f27 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/97b5e8b22b98e287481a97a9a4cfebbb348738a5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/be0f7745f883386e5263b4e475686a81dfa87175 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/67374e3a00814dcdd46e9feca61f69f7f2d81957 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/fc530fe168bb2b745a93f553ad21fc25fd9cba3d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1618257cb0aba4ce342ae8c0228368c24161f5fb | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7690a86b193271322cd31ab77349a87aa10858e4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/239d1683e08b2aee2a15ef35706e1ea9a76681d8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.