CVE-2026-31646
Description
In the Linux kernel, the following vulnerability has been resolved: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool() page_pool_create() can return an ERR_PTR on failure. The return value is used unconditionally in the loop that follows, passing the error pointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(), which dereferences it, causing a kernel oops. Add an IS_ERR check after page_pool_create() to return early on failure.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 6.19.13-1 |
| debian | sid | fixed | 6.19.13-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 6.6.135 | |
| linux-kernel | 6.2 | affected | |
| linux-kernel | 7.0 | affected | |
References
- https://git.kernel.org/stable/c/305832c53551cfbe6e5b81ca7ee765e60f4fe8e9
- https://git.kernel.org/stable/c/3fd0da4fd8851a7e62d009b7db6c4a05b092bc19
- https://git.kernel.org/stable/c/7caf90d9ab97951a58d1de85ab7e7d7cca7a4513
- https://git.kernel.org/stable/c/b5dcb41ba891b55157006cac79825c78a32b409e
- https://git.kernel.org/stable/c/e63265f188ea39dcf5f546770650027528f3bd0f
- https://www.suse.com/security/cve/CVE-2026-31646.html
- https://security-tracker.debian.org/tracker/CVE-2026-31646
CWEs
CWE-476
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.