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  4. CVE 2026 74629 netdibs correct freeing of dmbclientidarr
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Back to active CVEs
High · CVSS 8.8CVE-2026-74629

net/dibs: Correct freeing of dmb_clientid_arrCVE-2026-74629

Answer in brief

CVE-2026-74629 records a High severity (CVSS 8.8) vulnerability in net/dibs: Correct freeing of dmb_clientid_arr. 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 Aug 22, 2026Updated Aug 25, 2026Source checked Oct 6, 2026First seen by HOL Aug 22, 2026Material review Aug 25, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.8. 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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric6.18Not reported
Linux/Linuxgeneric>=cc21191b584c6f7836b0f10774f8278b7cbfba10 <ece6426b61241e9bfb41aa131f235168f55229b1 || >=cc21191b584c6f7836b0f10774f8278b7cbfba10 <7a1df20a8d2cc89e3a442b6e0b43b1cacde8d403 || >=cc21191b584c6f7836b0f10774f8278b7cbfba10 <9e6869be49064915edb6c8776b27c376cfdb0df5ece6426b61241e9bfb41aa131f235168f55229b1, 7a1df20a8d2cc89e3a442b6e0b43b1cacde8d403, 9e6869be49064915edb6c8776b27c376cfdb0df5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to ece6426b61241e9bfb41aa131f235168f55229b1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 22, 2026

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

  2. Source modified

    Aug 25, 2026

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

  3. First seen by HOL

    Aug 22, 2026

Sources and claim methodology

  • 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: net/dibs: Correct freeing of dmb_clientid_arr A dibs device interrupt handler can be active after dibs_dev_del() and may still access dmb_clientid_arr. (UAF) In case of a failure in dibs_dev_add() being called by dibs_lo_dev_probe() dmb_clientid_arr is freed twice (double free). Free dmb_clientid_arr in dibs_dev_release() after last reference is gone. Note that allocating in dibs_dev_add() instead of dibs_dev_alloc() is ok for now, because no dmbs can be registered before dibs_dev_add().

Quoted source text, attributed separately from HOL analysis.

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Record context

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