CVE-2026-64486: Linux kernel · ALSA: cmipci: check snd_ctl_new1() return value
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 7.0.0-1012.12~24.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 7.0.0-1012.12~24.04.1, 7.0.0-1011.11~24.04.1, 7.0.0-31.31~24.04.1 +7
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and has been released by Ubuntu in the linux-hwe-edge kernel updates. Users should update their systems to the fixed kernel versions (7.0.0-31.31 or later) as provided in the Ubuntu security notices USN-8726-1 and USN-8727-1 and reboot to apply the changes. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be necessary. No additional mitigation is required beyond applying the official updates.
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: cmipci: check snd_ctl_new1() return value snd_ctl_new1() can return NULL when memory allocation fails. snd_cmipci_spdif_controls() does not check the return value before dereferencing kctl->id.device, which can lead to a NULL pointer dereference. Add NULL checks after snd_ctl_new1() calls and return -ENOMEM if any fails.
References
- nvd.nist.gov/vuln/detail/CVE-2026-64486 (opens in a new tab)
- git.kernel.org/stable/c/4dd5b0b1a52a8d6e59a3f217204817228ce0238b (opens in a new tab)
- git.kernel.org/stable/c/67e9ea92cd598cba1783ff701553c776a6cedee9 (opens in a new tab)
- git.kernel.org/stable/c/8825a06bfa7932a7a74dec01669d405df0b47286 (opens in a new tab)
- git.kernel.org/stable/c/af2b009b773bc42995546507963e5e78970dc3ed (opens in a new tab)
- git.kernel.org/stable/c/b44888c33c4f11277d0e5e023338f2740232a4ed (opens in a new tab)
- git.kernel.org/stable/c/c205bd1b28fb7e5f1061a4e78813fad7d315cb3e (opens in a new tab)
- ubuntu.com/security/CVE-2026-64486 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-64486 (opens in a new tab)
- git.kernel.org/linus/c205bd1b28fb7e5f1061a4e78813fad7d315cb3e (opens in a new tab)
- ubuntu.com/security/notices/USN-8726-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8727-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8728-1 (opens in a new tab)