CVE-2023-0266

Timeline

Detection, updates, and resolution for this record.

1. Jan 30, 2023 · Catalog

   Detected

   A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e

2. Mar 30, 2023 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Apr 20, 2023 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e

Affected

• cpe debian/debian linux10.0
• cpe linux/linux kernelversion unspecified
• vendor Linux Kernelversion unspecified

Sources

• CISA KEVCVE-2023-0266

  Linux kernel contains a use-after-free vulnerability that allows for privilege escalation to gain ring0 access from the system user.

  cisa.gov
• CVE.orgCVE-2023-0266

  Official CVE identifier

  cve.org
• FIRST EPSSCVE-2023-0266

  30-day exploitation probability 3.7%

  first.org
• NIST NVDCVE-2023-0266

  A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgradin

  nvd.nist.gov

References

• CISA note · git.kernel.org
• Patch · github.com
• Patch · github.com
• Mailing List · lists.debian.org
• CISA note · nvd.nist.gov