CVE-2026-63878: Linux kernel · drm/amdgpu: check num_entries in GEM_OP GET_MAPPING_INFO
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 15:35 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 19 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 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.