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  4. CVE 2026 90308 rdmaerdma hold qp references for ae and cm
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Back to active CVEs
High · CVSS 7.8CVE-2026-90308

RDMA/erdma: Hold QP references for AE and CM processingCVE-2026-90308

Answer in brief

CVE-2026-90308 records a High severity (CVSS 7.8) vulnerability in RDMA/erdma: Hold QP references for AE and CM processing. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), 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 17, 2026Updated Oct 30, 2026Source checked Nov 1, 2026First seen by HOL Sep 17, 2026Material review Oct 30, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 1, 2026
References
6 linked sources
Open source record

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. 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), 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>=155055771704f8cbb5c176a4309b7dc30a50450c <6e32f84b63c054e09392153125d7202abab2d14b || >=155055771704f8cbb5c176a4309b7dc30a50450c <ec987c0654651036dad6a42f7fa2a6d7c16a3687 || >=155055771704f8cbb5c176a4309b7dc30a50450c <c92686867638cda954fdb2bdbac8a75e3aa6eaae || >=155055771704f8cbb5c176a4309b7dc30a50450c <a52eeff32024f190b3bdc99088c7becccd4fa60b6e32f84b63c054e09392153125d7202abab2d14b, ec987c0654651036dad6a42f7fa2a6d7c16a3687, c92686867638cda954fdb2bdbac8a75e3aa6eaae, a52eeff32024f190b3bdc99088c7becccd4fa60b
Linux/Linuxgeneric6.0Not reported
Linux/Linuxgeneric>=155055771704f8cbb5c176a4309b7dc30a50450c <233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8 || >=155055771704f8cbb5c176a4309b7dc30a50450c <6e32f84b63c054e09392153125d7202abab2d14b || >=155055771704f8cbb5c176a4309b7dc30a50450c <ec987c0654651036dad6a42f7fa2a6d7c16a3687 || >=155055771704f8cbb5c176a4309b7dc30a50450c <c92686867638cda954fdb2bdbac8a75e3aa6eaae || >=155055771704f8cbb5c176a4309b7dc30a50450c <a52eeff32024f190b3bdc99088c7becccd4fa60b233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8, 6e32f84b63c054e09392153125d7202abab2d14b, ec987c0654651036dad6a42f7fa2a6d7c16a3687, c92686867638cda954fdb2bdbac8a75e3aa6eaae, a52eeff32024f190b3bdc99088c7becccd4fa60b
Linux/Linuxgeneric>=155055771704f8cbb5c176a4309b7dc30a50450c <92101d7bd67cf313d65baede27118614a283f6bf || >=155055771704f8cbb5c176a4309b7dc30a50450c <233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8 || >=155055771704f8cbb5c176a4309b7dc30a50450c <6e32f84b63c054e09392153125d7202abab2d14b || >=155055771704f8cbb5c176a4309b7dc30a50450c <ec987c0654651036dad6a42f7fa2a6d7c16a3687 || >=155055771704f8cbb5c176a4309b7dc30a50450c <c92686867638cda954fdb2bdbac8a75e3aa6eaae || >=155055771704f8cbb5c176a4309b7dc30a50450c <a52eeff32024f190b3bdc99088c7becccd4fa60b92101d7bd67cf313d65baede27118614a283f6bf, 233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8, 6e32f84b63c054e09392153125d7202abab2d14b, ec987c0654651036dad6a42f7fa2a6d7c16a3687, c92686867638cda954fdb2bdbac8a75e3aa6eaae, a52eeff32024f190b3bdc99088c7becccd4fa60b

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 6e32f84b63c054e09392153125d7202abab2d14b; Linux/Linux to 233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8; Linux/Linux to 92101d7bd67cf313d65baede27118614a283f6bf if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 17, 2026

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

  2. Source modified

    Oct 30, 2026

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

  3. First seen by HOL

    Sep 17, 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
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Hold QP references for AE and CM processing AE QP fatal events and iWARP CM paths load QPs from dev->qp_xa and then use or reference them outside the xarray lock. erdma_destroy_qp() can drop the destroy-path reference and free QP resources while such a lookup is in flight. Add erdma_qp_get_by_qpn() to acquire a kref under the xarray lock with kref_get_unless_zero(). Remove the QP from the xarray before dropping the destroy-path reference so no new lookup can acquire it while destruction waits for existing users.

Quoted source text, attributed separately from HOL analysis.