CVE-2026-31730

HIGH EPSS 2.9%
Published May 1, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 1, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-415

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥6.2  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/0bdee4118340c5a756220c1b29a7dab86bb0aa65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3a164f640953cc982804746e772d379171aff5c6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4b8e527aca357a6488680713bd88007cf8f547fe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ba2c83167b215da30fa2aae56b140198cf8d8408
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f67d368d26764a357691b2b3a33d3cb55b435bfc
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0bdee4118340c5a756220c1b29a7dab86bb0aa65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3a164f640953cc982804746e772d379171aff5c6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4b8e527aca357a6488680713bd88007cf8f547fe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ba2c83167b215da30fa2aae56b140198cf8d8408
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f67d368d26764a357691b2b3a33d3cb55b435bfc
    Patch