Home/CVE/In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: possible double-free of cctx-remote_
CVE

CVE-2026-31730

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: possible double-free of cctx-remote_

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.

HIGH · CVSS 7.8 EPSS 0.00015
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0

Weakness Classification

Affected Products & Versions

5
linux kernel>= 6.2 and < 6.6.134
linux kernel>= 6.7 and < 6.12.81
linux kernel>= 6.13 and < 6.18.22
linux kernel>= 6.19 and < 6.19.12
linux kernelall versions

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 May 2026 · 03:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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