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VulnerabilityPublished

CVE-2026-63907: Linux kernel · uio: uio_pci_generic_sva: fix double free of devm_kzalloc() memory

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 15:48 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 30 Oct 2026.

What to do

AI-suggested

A fix has been implemented by removing the manual kfree() calls in the affected driver code. Users should update to the fixed Linux kernel version once available to resolve this issue.

Description

A double free vulnerability was identified and fixed in the Linux kernel's uio_pci_generic_sva driver. The issue involved improper manual freeing of memory allocated with devm_kzalloc(), which is already managed by the device resource management system. This could lead to a double free when the driver probe fails or during device removal.

References

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