net: mana: Reserve extra CQ slot for the fence completion CQE (CVE-2026-97613) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97613

net: mana: Reserve extra CQ slot for the fence completion CQE

Answer in brief

CVE-2026-97613 records a Unknown severity vulnerability in net: mana: Reserve extra CQ slot for the fence completion CQE. 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 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

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
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=6cc74443a7732d7e93bee3d0c3704a22cc7274d9 <62eb52454afcc1d390b8624c5d1ddc92cf382f39 \|\| >=6cc74443a7732d7e93bee3d0c3704a22cc7274d9 <1e43c407624d2111c19d4d8ffe9b2191a0ec42de \|\| >=6cc74443a7732d7e93bee3d0c3704a22cc7274d9 <6c739cb89ebd6cf225dac46d2721e11927a7ead4 \|\| >=6cc74443a7732d7e93bee3d0c3704a22cc7274d9 <80dd7e754b3aa9637a0758ad93fa209f9650ec48	62eb52454afcc1d390b8624c5d1ddc92cf382f39, 1e43c407624d2111c19d4d8ffe9b2191a0ec42de, 6c739cb89ebd6cf225dac46d2721e11927a7ead4, 80dd7e754b3aa9637a0758ad93fa209f9650ec48
Linux/Linuxgeneric	5.17	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 62eb52454afcc1d390b8624c5d1ddc92cf382f39 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: net: mana: Reserve extra CQ slot for the fence completion CQE The RX completion queue is sized to hold exactly one CQE per posted RX WQE. MANA_FENCE_RQ makes hardware post an additional CQE_RX_OBJECT_FENCE after the packet CQEs. The current sizing reserves no extra slot for it and in rare cases, CQ has no guaranteed slot for the fence CQE when it is full of packet CQEs. This can lead to dropping the fence completion while the driver waits holding RTNL lock throughout the timeout duration. Reserve one extra CQE slot for CQE_RX_OBJECT_FENCE. mana_gd_alloc_memory() requires queue_size to be a power-of-two and at least MANA_PAGE_SIZE; the reservation pushes cq_size past a power-of-two, so round up the CQ size in mana_create_rxq().

Quoted source text, attributed separately from HOL analysis.