CVE-2026-74527
octeontx2-af: Block VFs from clobbering special CGX PKIND state
Description
In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Block VFs from clobbering special CGX PKIND state PF and VF NIX LFs that share a CGX LMAC reuse the same hardware PKIND programming. When HiGig2 or EDSA parsing is enabled, a VF NIX LF alloc must not reset the LMAC RX PKIND or default TX parse config over the PF setup. Add cgx_get_pkind() and rvu_cgx_is_pkind_config_permitted() so VFs skip cgx_set_pkind(), rvu_npc_set_pkind(), and NIX_AF_LFX_TX_PARSE_CFG updates when the LMAC is using NPC_RX_HIGIG_PKIND or NPC_RX_EDSA_PKIND.
INFO
Published Date :
Aug. 15, 2026, 1:17 p.m.
Last Modified :
Aug. 15, 2026, 1:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74527
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.
No affected product recoded yet
Solution
- Update the Linux kernel to incorporate the fix.
- Ensure VFs do not reset LMAC RX PKIND.
- Verify VF does not alter default TX parse config.
- Apply checks for NPC_RX_HIGIG_PKIND or NPC_RX_EDSA_PKIND.
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-2026-74527.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/3bd438a58e910db5dc369aa25dfed1fc95f1b596 | |
| https://git.kernel.org/stable/c/d3c6b0f48f126a36955b3fb4154a59d0b3621d97 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74527 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-2026-74527
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-2026-74527 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74527 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.
-
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': '94d942c5fb970ac2166216838b278613decfa9a0', 'lessThan': 'd3c6b0f48f126a36955b3fb4154a59d0b3621d97', 'versionType': 'git'}, {'status': 'affected', 'version': '94d942c5fb970ac2166216838b278613decfa9a0', 'lessThan': '3bd438a58e910db5dc369aa25dfed1fc95f1b596', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/cgx.c', 'drivers/net/ethernet/marvell/octeontx2/af/cgx.h', 'drivers/net/ethernet/marvell/octeontx2/af/rvu.h', 'drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c', 'drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c', 'drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.20'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/cgx.c', 'drivers/net/ethernet/marvell/octeontx2/af/cgx.h', 'drivers/net/ethernet/marvell/octeontx2/af/rvu.h', 'drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c', 'drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c', 'drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Block VFs from clobbering special CGX PKIND state PF and VF NIX LFs that share a CGX LMAC reuse the same hardware PKIND programming. When HiGig2 or EDSA parsing is enabled, a VF NIX LF alloc must not reset the LMAC RX PKIND or default TX parse config over the PF setup. Add cgx_get_pkind() and rvu_cgx_is_pkind_config_permitted() so VFs skip cgx_set_pkind(), rvu_npc_set_pkind(), and NIX_AF_LFX_TX_PARSE_CFG updates when the LMAC is using NPC_RX_HIGIG_PKIND or NPC_RX_EDSA_PKIND. Added Reference https://git.kernel.org/stable/c/3bd438a58e910db5dc369aa25dfed1fc95f1b596 Added Reference https://git.kernel.org/stable/c/d3c6b0f48f126a36955b3fb4154a59d0b3621d97