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VulnerabilityPublished

CVE-2026-63878: Linux kernel · drm/amdgpu: check num_entries in GEM_OP GET_MAPPING_INFO

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 15:35 UTC

Severity
High

Rated High 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 patch has been applied to add a size bounds check on num_entries before memory allocation, preventing oversized allocations and kernel panics. Users should update their Linux kernel to a version including this fix. No other mitigation is indicated.

Description

A vulnerability in the Linux kernel's amdgpu driver allows an unchecked user-supplied num_entries value in GEM_OP GET_MAPPING_INFO to cause an excessively large memory allocation. This can trigger kernel warnings and potentially cause a kernel panic on systems configured to panic on warnings.

References

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