octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF
In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF rvu_mbox_handler_lmtst_tbl_setup() uses req->base_pcifunc as a direct index into the LMT map table to read another function's LMTLINE physical base address and copy it into the caller's own LMT map table entry. The mailbox dispatcher authenticates req->hdr.pcifunc from the IRQ source, but req->base_pcifunc is a separate payload field and is not sanitized. Reject the request with -EPERM when a VF caller's base_pcifunc is not a valid function under its own PF. is_pf_func_valid() bounds the FUNC field to the PF's configured VF count, keeping the computed index inside the caller's own slot block.
- Published
- Aug 15, 2026
- Updated
- Aug 23, 2026
- EPSS
- 0.2% · 6th percentile
- CWE
- —
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Report tools
Action score
35
Monitor
Low priority for now.
- CVSS
- 35 / 40 · 8.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 8.8
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
—
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
- 5.14affected
- 893ae97214c385be02f8ec097298cc48c7f0d905 and later · before 04c014e49b9f53d58a8f94adece8a0af3ae1b85caffected · git
- 893ae97214c385be02f8ec097298cc48c7f0d905 and later · before 6967dd944be2a71eddab3a2ae1a1a4dd9e5f8eedaffected · git
- 893ae97214c385be02f8ec097298cc48c7f0d905 and later · before e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11affected · git
- 893ae97214c385be02f8ec097298cc48c7f0d905 and later · before 54535692bec9ef464adc714108eb19e49e38b5a2affected · git
- 893ae97214c385be02f8ec097298cc48c7f0d905 and later · before c73b8795b45f4ad5a95120d2e9b435ea4616e08eaffected · git
- 893ae97214c385be02f8ec097298cc48c7f0d905 and later · before 59da37fee81a8d76079313348ca13c5bc90dd6aeaffected · git
- 893ae97214c385be02f8ec097298cc48c7f0d905 and later · before 8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915affected · git
- before 5.14not affected · semver
- 5.15.217 and later · up to and including 5.15.*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 |
|---|---|---|---|
| AlmaLinux:9 | kernel | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-core | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-debug | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-debug-core | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-debug-devel | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-debug-modules | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-devel | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-devel-matched | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-modules | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-modules-core | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-64k-modules-extra | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-abi-stablelists | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-core | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-cross-headers | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-debug | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-debug-core | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-debug-devel | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-debug-devel-matched | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-debug-modules | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
| AlmaLinux:9 | kernel-debug-modules-core | before 5.14.0-687.48.1.el9_8 | 5.14.0-687.48.1.el9_8 |
+96
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 | 04c014e49b9f53d58a8f94adece8a0af3ae1b85c | Vendor (CNA) |
| Linux Linux | 54535692bec9ef464adc714108eb19e49e38b5a2 | Vendor (CNA) |
| Linux Linux | 59da37fee81a8d76079313348ca13c5bc90dd6ae | Vendor (CNA) |
| Linux Linux | 6967dd944be2a71eddab3a2ae1a1a4dd9e5f8eed | Vendor (CNA) |
| Linux Linux | 8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915 | Vendor (CNA) |
| Linux Linux | c73b8795b45f4ad5a95120d2e9b435ea4616e08e | Vendor (CNA) |
| Linux Linux | e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11 | Vendor (CNA) |
| almalinux:kernel | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-core | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-core | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel-matched | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-core | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-extra | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel-matched | 5.14.0-687.48.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| debian:linux | 6.1.187-1 · Debian:12 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.101-1~deb12u1 · Debian:12 | Package registry (OSV) |
| red hat:kernel-64k-debug-debuginfo | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel-matched | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debuginfo | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel-matched | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel-matched | 0:5.14.0-687.48.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
+4
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.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvd-secondary
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/04c014e49b9f53d58a8f94adece8a0af3ae1b85c
- git.kernel.org/stable/c/54535692bec9ef464adc714108eb19e49e38b5a2
- git.kernel.org/stable/c/59da37fee81a8d76079313348ca13c5bc90dd6ae
- git.kernel.org/stable/c/6967dd944be2a71eddab3a2ae1a1a4dd9e5f8eed
- git.kernel.org/stable/c/8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915
- git.kernel.org/stable/c/c73b8795b45f4ad5a95120d2e9b435ea4616e08e
- git.kernel.org/stable/c/e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11
Vendor advisories and official records. Exploit/PoC links are deliberately left out.