CVE-2026-31518
Description
In the Linux kernel, the following vulnerability has been resolved: esp: fix skb leak with espintcp and async crypto When the TX queue for espintcp is full, esp_output_tail_tcp will return an error and not free the skb, because with synchronous crypto, the common xfrm output code will drop the packet for us. With async crypto (esp_output_done), we need to drop the skb when esp_output_tail_tcp returns an error.
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 | 6.1.170-1 |
| debian | bullseye | fixed | 6.1.170-1~deb11u1 |
| debian | forky | fixed | 6.19.11-1 |
| debian | sid | fixed | 6.19.11-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 5.10.253 | |
| linux-kernel | 7.0 | affected | |
References
- https://git.kernel.org/stable/c/0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2
- https://git.kernel.org/stable/c/41aafca57de4a4c026701622bd4648f112a9edcd
- https://git.kernel.org/stable/c/4820847e036ff1035b01b69ad68dfc17e7028fe9
- https://git.kernel.org/stable/c/6a3ec6efbc4f90e0ccb2e71574f07351f19996f4
- https://git.kernel.org/stable/c/6aa9841d917532d0f2d932d1ff2f3a94305aaf47
- https://git.kernel.org/stable/c/88d386243ed374ac969dabd3bbc1409a31d81818
- https://git.kernel.org/stable/c/aca3ad0c262f54a5b5c95dda80a48365997d1224
- https://git.kernel.org/stable/c/df6f995358dc1f3c42484f5cfe241d7bd3e1cd15
- https://www.suse.com/security/cve/CVE-2026-31518.html
- https://security-tracker.debian.org/tracker/CVE-2026-31518
CWEs
CWE-401
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.