CVE-2026-31730
Description
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: possible double-free of cctx->remote_heap fastrpc_init_create_static_process() may free cctx->remote_heap on the err_map path but does not clear the pointer. Later, fastrpc_rpmsg_remove() frees cctx->remote_heap again if it is non-NULL, which can lead to a double-free if the INIT_CREATE_STATIC ioctl hits the error path and the rpmsg device is subsequently removed/unbound. Clear cctx->remote_heap after freeing it in the error path to prevent the later cleanup from freeing it again. This issue was found by an in-house analysis workflow that extracts AST-based information and runs static checks, with LLM assistance for triage, and was confirmed by manual code review. No hardware testing was performed.
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 | 6.19.12-1 |
| debian | sid | fixed | 6.19.12-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 6.6.134 | |
| linux-kernel | 7.0 | affected | |
References
- https://git.kernel.org/stable/c/0bdee4118340c5a756220c1b29a7dab86bb0aa65
- https://git.kernel.org/stable/c/3a164f640953cc982804746e772d379171aff5c6
- https://git.kernel.org/stable/c/4b8e527aca357a6488680713bd88007cf8f547fe
- https://git.kernel.org/stable/c/ba2c83167b215da30fa2aae56b140198cf8d8408
- https://git.kernel.org/stable/c/f67d368d26764a357691b2b3a33d3cb55b435bfc
- https://www.suse.com/security/cve/CVE-2026-31730.html
- https://security-tracker.debian.org/tracker/CVE-2026-31730
CWEs
CWE-415
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.