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  4. CVE 2026 63860 rdmacore prefer nlanulstring
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Back to active CVEs
High · CVSS 8.4CVE-2026-63860

RDMA/core: Prefer NLA_NUL_STRINGCVE-2026-63860

Answer in brief

CVE-2026-63860 records a High severity (CVSS 8.4) vulnerability in RDMA/core: Prefer NLA_NUL_STRING. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 19, 2026Updated Oct 23, 2026Source checked Nov 4, 2026First seen by HOL Aug 5, 2026Material review Oct 23, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-170
Source
CVE List V5
Source checked
Nov 4, 2026
References
8 linked sources
Open source record

Key facts

Risk
High · CVSS 8.4
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=30dc5e63d6a5ad24894b5512d10b228d73645a44 <fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf || >=30dc5e63d6a5ad24894b5512d10b228d73645a44 <87111356d58d86edb221ba144d261ed83a5b8bbe || >=30dc5e63d6a5ad24894b5512d10b228d73645a44 <abda65bdd13084c771842adaac1f652d0660dd82 || >=30dc5e63d6a5ad24894b5512d10b228d73645a44 <137b5918931d4d05aa8ea8d3adf67f7224eef63c || >=30dc5e63d6a5ad24894b5512d10b228d73645a44 <5877c043398d5fa0e93919a3d837e5cd7a98a961 || >=30dc5e63d6a5ad24894b5512d10b228d73645a44 <f2c7b39dde2e61df8157066969cc2a408cd3dcd9 || >=30dc5e63d6a5ad24894b5512d10b228d73645a44 <c26a0052cceed4c4d380ee5808b699f937fb58d8 || >=30dc5e63d6a5ad24894b5512d10b228d73645a44 <6ed3d14fc45d3da6025e7fe4a6a09066856698e2fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf, 87111356d58d86edb221ba144d261ed83a5b8bbe, abda65bdd13084c771842adaac1f652d0660dd82, 137b5918931d4d05aa8ea8d3adf67f7224eef63c, 5877c043398d5fa0e93919a3d837e5cd7a98a961, f2c7b39dde2e61df8157066969cc2a408cd3dcd9, c26a0052cceed4c4d380ee5808b699f937fb58d8, 6ed3d14fc45d3da6025e7fe4a6a09066856698e2
Linux/Linuxgeneric3.16Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  2. Source modified

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  3. First seen by HOL

    Aug 5, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLA_NUL_STRING These attributes are evaluated as c-string (passed to strcmp), but NLA_STRING doesn't check for the presence of a \0 terminator. Either this needs to switch to nla_strcmp() and needs to adjust printf fmt specifier to not use plain %s, or this needs to use NLA_NUL_STRING. As the code has been this way for long time, it seems to me that userspace does include the terminating nul, even tough its not enforced so far, and thus NLA_NUL_STRING use is the simpler solution.

Quoted source text, attributed separately from HOL analysis.