net: mana: Reserve extra CQ slot for the fence completion CQE
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().
- Published
- Sep 25, 2026
- Updated
- Oct 3, 2026
- EPSS
- 0.2% · 9th percentile
- CWE
- —
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Report tools
Action score
0
Monitor
Low priority for now.
- CVSS
- 0 / 40 · —
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for helpAffected systems
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Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 5.17affected
- 6cc74443a7732d7e93bee3d0c3704a22cc7274d9 and later · before f7d76b84b9206eef4320d8ab715d65f944535acfaffected · git
- 6cc74443a7732d7e93bee3d0c3704a22cc7274d9 and later · before 62eb52454afcc1d390b8624c5d1ddc92cf382f39affected · git
- 6cc74443a7732d7e93bee3d0c3704a22cc7274d9 and later · before 1e43c407624d2111c19d4d8ffe9b2191a0ec42deaffected · git
- 6cc74443a7732d7e93bee3d0c3704a22cc7274d9 and later · before 6c739cb89ebd6cf225dac46d2721e11927a7ead4affected · git
- 6cc74443a7732d7e93bee3d0c3704a22cc7274d9 and later · before 80dd7e754b3aa9637a0758ad93fa209f9650ec48affected · git
- before 5.17not affected · semver
- 6.6.158 and later · up to and including 6.6.*not affected · semver
- 6.12.111 and later · up to and including 6.12.*not affected · semver
- 6.18.53 and later · up to and including 6.18.*not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | all versions | — |
| Debian:12 | linux-6.12 | before 6.12.111-1~deb12u1 | 6.12.111-1~deb12u1 |
| Debian:13 | linux | before 6.12.111-1 | 6.12.111-1 |
| Debian:14 | linux | before 7.2.7-1 | 7.2.7-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
- CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler40Plan
- CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index40Plan
- CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 1e43c407624d2111c19d4d8ffe9b2191a0ec42de | Vendor (CNA) |
| Linux Linux | 62eb52454afcc1d390b8624c5d1ddc92cf382f39 | Vendor (CNA) |
| Linux Linux | 6c739cb89ebd6cf225dac46d2721e11927a7ead4 | Vendor (CNA) |
| Linux Linux | 80dd7e754b3aa9637a0758ad93fa209f9650ec48 | Vendor (CNA) |
| Linux Linux | f7d76b84b9206eef4320d8ab715d65f944535acf | Vendor (CNA) |
| azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 | Release Notes | Microsoft (MSRC) |
| debian:linux | 6.12.111-1 · Debian:13 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.111-1~deb12u1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
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Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-1184 · Sep 28, 2026(Linux Kernel Güvenlik Bildirimi)
Technical details
No CVSS vector for this record, so attack conditions can't be derived.
Weakness class (CWE)
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Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/1e43c407624d2111c19d4d8ffe9b2191a0ec42de
- git.kernel.org/stable/c/62eb52454afcc1d390b8624c5d1ddc92cf382f39
- git.kernel.org/stable/c/6c739cb89ebd6cf225dac46d2721e11927a7ead4
- git.kernel.org/stable/c/80dd7e754b3aa9637a0758ad93fa209f9650ec48
- git.kernel.org/stable/c/f7d76b84b9206eef4320d8ab715d65f944535acf
Vendor advisories and official records. Exploit/PoC links are deliberately left out.