8.8

CVE-2026-72045: linux Missing Authorization

CVSS: 8.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-72045DEBIAN-CVE-2026-72045
Published 15-08-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-72045 is a high (CVSS 8.8) Missing Authorization vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.8% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.15%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 19 · Related 18
OPENSUSE-SU-2026:21910-1RHSA-2026:67470SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

-0.02 pp

From 0.17% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.101-1 | < 7.1.5-1
  • linux-6.12< 6.12.101-1~deb12u1
Linux1 product
  • linux≥ 893ae97214c385be02f8ec097298cc48c7f0d905, < 04c014e49b9f53d58a8f94adece8a0af3ae1b85c | ≥ 893ae97214c385be02f8ec097298cc48c7f0d905, < 6967dd944be2a71eddab3a2ae1a1a4dd9e5f8eed | ≥ 893ae97214c385be02f8ec097298cc48c7f0d905, < e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11 | ≥ 893ae97214c385be02f8ec097298cc48c7f0d905, < 54535692bec9ef464adc714108eb19e49e38b5a2 | ≥ 893ae97214c385be02f8ec097298cc48c7f0d905, < c73b8795b45f4ad5a95120d2e9b435ea4616e08e | ≥ 893ae97214c385be02f8ec097298cc48c7f0d905, < 59da37fee81a8d76079313348ca13c5bc90dd6ae | ≥ 893ae97214c385be02f8ec097298cc48c7f0d905, < 8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915 | 5.14

3 vendors · 160 products

References

20 links
Show all 20 references