CVE-2026-72045octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 893ae97214c385be02f8ec097298cc48c7f0d905 builds before 04c014e49b9f53d58a8f94adece8a0af3ae1b85c; from 893ae97214c385be02f8ec097298cc48c7f0d905 before 6967dd944be2a71eddab3a2ae1a1a4dd9e5f8eed; from 893ae97214c385be02f8ec097298cc48c7f0d905 before e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11; from 893ae97214c385be02f8ec097298cc48c7f0d905 before 54535692bec9ef464adc714108eb19e49e38b5a2; from 893ae97214c385be02f8ec097298cc48c7f0d905 before c73b8795b45f4ad5a95120d2e9b435ea4616e08e; 893ae97214c385be02f8ec097298cc48c7f0d905 builds before 59da37fee81a8d76079313348ca13c5bc90dd6ae; 893ae97214c385be02f8ec097298cc48c7f0d905 builds before 8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915 | CNA record |
References
- https://git.kernel.org/stable/c/04c014e49b9f53d58a8f94adece8a0af3ae1b85c
- https://git.kernel.org/stable/c/6967dd944be2a71eddab3a2ae1a1a4dd9e5f8eed
- https://git.kernel.org/stable/c/e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11
- https://git.kernel.org/stable/c/54535692bec9ef464adc714108eb19e49e38b5a2
- https://git.kernel.org/stable/c/c73b8795b45f4ad5a95120d2e9b435ea4616e08e
- https://git.kernel.org/stable/c/59da37fee81a8d76079313348ca13c5bc90dd6ae
- https://git.kernel.org/stable/c/8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.