VulnerabilityPublished 27 May 2026Updated 6 Nov 2026

CVE-2026-45853: Linux kernel · drm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f441538893eba6347b983f2904819ca6c99da65e : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in f441538893eba6347b983f2904819ca6c99da65e, 16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55e, 9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 27 May 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 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to f441538893eba6347b983f2904819ca6c99da65e, 16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55e, 9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5 or 0c44d61945c4a80775292d96460aa2f22e62f86c.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ b194d21b9bcc15b50df1bc3ff7428e51c2918a6f, < f441538893eba6347b983f2904819ca6c99da65e	Fixed in f441538893eba6347b983f2904819ca6c99da65e
LinuxLinux	Affected ≥ b194d21b9bcc15b50df1bc3ff7428e51c2918a6f, < 16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55e	Fixed in 16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55e
LinuxLinux	Affected ≥ b194d21b9bcc15b50df1bc3ff7428e51c2918a6f, < 9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5	Fixed in 9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5
LinuxLinux	Affected ≥ b194d21b9bcc15b50df1bc3ff7428e51c2918a6f, < 0c44d61945c4a80775292d96460aa2f22e62f86c	Fixed in 0c44d61945c4a80775292d96460aa2f22e62f86c
LinuxLinux	Affected =6.11	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges() amdgpu_discovery_get_nps_info() internally allocates memory for ranges using kvcalloc(), which may use vmalloc() for large allocation. Using kfree() to release vmalloc memory will lead to a memory corruption. Use kvfree() to safely handle both kmalloc and vmalloc allocations. Compile tested only. Issue found using a prototype static analysis tool and code review.

References

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