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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-80880

IB/mlx5: Properly support implicit ODP rereg_mrCVE-2026-80880

Answer in brief

CVE-2026-80880 records a Unknown severity vulnerability in IB/mlx5: Properly support implicit ODP rereg_mr. 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 Sep 4, 2026Updated Sep 4, 2026Source checked Oct 19, 2026First seen by HOL Sep 4, 2026Material review Sep 4, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 19, 2026
References
7 linked sources
Open source record

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=ef3642c4f54d3493c92c71faf46139b2473bc532 <cbc9982c8573fb9e35040063aa78c8ebe768a1ff || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69 || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <eb7cb798e563b3f3b3baeb9cc6f7455764267e50 || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <d4f84bfa089fe71f775d25beb29303e844494c25 || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <5d02b9a2efd11d28d2a8feac7769686b1b871d9c || >=ef3642c4f54d3493c92c71faf46139b2473bc532 <ee7a8335069150c3f1893a697ab30bbeca00d796cbc9982c8573fb9e35040063aa78c8ebe768a1ff, ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69, 94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb, eb7cb798e563b3f3b3baeb9cc6f7455764267e50, d4f84bfa089fe71f775d25beb29303e844494c25, 5d02b9a2efd11d28d2a8feac7769686b1b871d9c, ee7a8335069150c3f1893a697ab30bbeca00d796
Linux/Linuxgeneric5.11Not 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 cbc9982c8573fb9e35040063aa78c8ebe768a1ff if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 4, 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
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: IB/mlx5: Properly support implicit ODP rereg_mr Due to all the child mkeys in the implicit ODP configuration we cannot change anything in place for the parent mkey. Instead the whole thing needs to be rebuilt if any change is requested. If the user does not specify a translation then force the implicit values which will then fall through the logic into mlx5_ib_reg_user_mr() to allocate a completely new MR. Since implicit children were also touching the mr->pd, this removes another case where the access was racy.

Quoted source text, attributed separately from HOL analysis.