octeontx2-af: Block VFs from clobbering special CGX PKIND state
CVE-2026-74527 · published 15 Aug 2026
How serious is it
- Severity: high, CVSS score 8.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-74527?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 94d942c5fb970ac2166216838b278613decfa9a0 to < 1106b26e86ac1e7e4d1f634bcd532c5d44e60620, 94d942c5fb970ac2166216838b278613decfa9a0 to < 7e888d7dd11519330ba6c6a28391d55891463a6a, 94d942c5fb970ac2166216838b278613decfa9a0 to < a76243488740a07c81c9adf431685bb7f7c31d8c, 94d942c5fb970ac2166216838b278613decfa9a0 to < d3c6b0f48f126a36955b3fb4154a59d0b3621d97
- Linux Linux: 4.20
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/1106b26e86ac1e7e4d1f634bcd532c5d44e60620
- git.kernel.org/stable/c/7e888d7dd11519330ba6c6a28391d55891463a6a
- git.kernel.org/stable/c/a76243488740a07c81c9adf431685bb7f7c31d8c
- git.kernel.org/stable/c/d3c6b0f48f126a36955b3fb4154a59d0b3621d97
- git.kernel.org/stable/c/3bd438a58e910db5dc369aa25dfed1fc95f1b596
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON