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8.8
HIGH CVSS 3.1
CVE-2026-72045
octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF
Overview
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.

Details
INFO

Published Date :

Aug. 15, 2026, 6:21 a.m.

Last Modified :

Aug. 17, 2026, 6:18 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-72045 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Restrict VF LMTLINE sharing to its own PF by validating base_pcifunc.
  • Validate base_pcifunc against VF's PF configuration.
  • Reject requests when base_pcifunc is invalid.
  • Ensure index is within caller's own slot block.
  • Apply provided kernel patch.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-72045.

URL Resource
https://git.kernel.org/stable/c/54535692bec9ef464adc714108eb19e49e38b5a2
https://git.kernel.org/stable/c/59da37fee81a8d76079313348ca13c5bc90dd6ae
https://git.kernel.org/stable/c/8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915
https://git.kernel.org/stable/c/c73b8795b45f4ad5a95120d2e9b435ea4616e08e
https://git.kernel.org/stable/c/e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72045 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-72045 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-72045 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-72045 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': 'e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '54535692bec9ef464adc714108eb19e49e38b5a2', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': 'c73b8795b45f4ad5a95120d2e9b435ea4616e08e', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '59da37fee81a8d76079313348ca13c5bc90dd6ae', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': 'e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '54535692bec9ef464adc714108eb19e49e38b5a2', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': 'c73b8795b45f4ad5a95120d2e9b435ea4616e08e', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '59da37fee81a8d76079313348ca13c5bc90dd6ae', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': 'e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '54535692bec9ef464adc714108eb19e49e38b5a2', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': 'c73b8795b45f4ad5a95120d2e9b435ea4616e08e', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '59da37fee81a8d76079313348ca13c5bc90dd6ae', 'versionType': 'git'}, {'status': 'affected', 'version': '893ae97214c385be02f8ec097298cc48c7f0d905', 'lessThan': '8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c'], 'defaultStatus': 'affected'}]
    Added 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.
    Added Reference https://git.kernel.org/stable/c/54535692bec9ef464adc714108eb19e49e38b5a2
    Added Reference https://git.kernel.org/stable/c/59da37fee81a8d76079313348ca13c5bc90dd6ae
    Added Reference https://git.kernel.org/stable/c/8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915
    Added Reference https://git.kernel.org/stable/c/c73b8795b45f4ad5a95120d2e9b435ea4616e08e
    Added Reference https://git.kernel.org/stable/c/e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
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Confidentiality Impact
Integrity Impact
Availability Impact