Skip to main content
VulnerabilityPublished Updated

CVE-2025-38676: Linux kernel · iommu/amd: Avoid stack buffer overflow from kernel cmdline

Affects Linux kernelSource CVE Database V5

0
Compare

Not known to be exploited · fixed in a732502bf3bbe859613b6d7b2b0313b11f0474ac : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:34 UTC

Severity
Unrated

Rated by Threat Radar · 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 a732502bf3bbe859613b6d7b2b0313b11f0474ac, 8503d0fcb1086a7cfe26df67ca4bd9bd9e99bdec, 736db11c86f03e717fc4bf771d05efdf10d23acb +9

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Aug 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
  • >=5.10.175 <5.10.241
  • >=5.15.103 <5.15.190
  • >=6.1.16 <6.1.149
  • >=5.4.237 <5.5
  • >=6.2.3 <6.3
Fixed in
  • a732502bf3bbe859613b6d7b2b0313b11f0474ac
  • 8503d0fcb1086a7cfe26df67ca4bd9bd9e99bdec
  • 736db11c86f03e717fc4bf771d05efdf10d23acb
  • 9ff52d3af0ef286535749e14e3fe9eceb39a8349
  • 8f80c633cba144f721d38d9380f23d23ab7db10e
  • 6.3
  • 6.1.149
  • 5.15.190
  • 5.10.241
  • 5.5
  • 4bdb0f78bddbfa77d3ab458a21dd9cec495d317a
  • 0ad8509b468fa1058f4f400a1829f29e4ccc4de8
LinuxLinuxAffected
  • =6.3
Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Avoid stack buffer overflow from kernel cmdline While the kernel command line is considered trusted in most environments, avoid writing 1 byte past the end of "acpiid" if the "str" argument is maximum length.

References

Community reviews

Loading reviews…