Skip to main content
VulnerabilityPublished Updated

CVE-2025-39794: Linux kernel · ARM: tegra: Use I/O memcpy to write to IRAM

Affects Linux kernelSource CVE Database V5

0
Compare

Not known to be exploited · fixed in b28c1a14accc79ead1e87bbdae53309da60be1e7 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:35 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
CISA SSVC
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, 2026-11-05.

Patch
Available – fixed in b28c1a14accc79ead1e87bbdae53309da60be1e7, 387435f4833f97aabfd74434ee526e31e8a626ea, 2499b0ac908eefbb8a217aae609b7a5b5174f330 +6

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Sep 2025

  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 5 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ b36ab9754efbd7429d214b3b03dc9843882571bd, < b28c1a14accc79ead1e87bbdae53309da60be1e7
Fixed in
  • b28c1a14accc79ead1e87bbdae53309da60be1e7
LinuxLinuxAffected
  • ≥ b36ab9754efbd7429d214b3b03dc9843882571bd, < 387435f4833f97aabfd74434ee526e31e8a626ea
Fixed in
  • 387435f4833f97aabfd74434ee526e31e8a626ea
LinuxLinuxAffected
  • ≥ b36ab9754efbd7429d214b3b03dc9843882571bd, < 2499b0ac908eefbb8a217aae609b7a5b5174f330
Fixed in
  • 2499b0ac908eefbb8a217aae609b7a5b5174f330
LinuxLinuxAffected
  • ≥ b36ab9754efbd7429d214b3b03dc9843882571bd, < 398e67e0f5ae04b29bcc9cbf342e339fe9d3f6f1
Fixed in
  • 398e67e0f5ae04b29bcc9cbf342e339fe9d3f6f1
LinuxLinuxAffected
  • ≥ b36ab9754efbd7429d214b3b03dc9843882571bd, < 96d6605bf0561d6e568b1dd9265a0f73b5b94f51
Fixed in
  • 96d6605bf0561d6e568b1dd9265a0f73b5b94f51
LinuxLinuxAffected
  • ≥ b36ab9754efbd7429d214b3b03dc9843882571bd, < 75a3bdfeed2f129a2c7d9fd7779382b78e35b014
Fixed in
  • 75a3bdfeed2f129a2c7d9fd7779382b78e35b014

AI-suggested

A fix is available and has been applied in multiple Linux kernel commits identified by their hashes. Users should update to a Linux kernel version that includes these fixes to resolve the issue.

Description

A vulnerability in the Linux kernel's ARM Tegra driver was fixed by changing the method used to write to IRAM from a normal memcpy to an I/O memcpy. The issue caused kernel crashes when KASAN attempted to check memory boundaries during normal memcpy operations.

References

Community reviews

Loading reviews…