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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-31730

misc: fastrpc: possible double-free of cctx->remote_heap

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 0871561055e666da421d779397efcc1e5e964cab to < 4b8e527aca357a6488680713bd88007cf8f547feaffected
  • 0871561055e666da421d779397efcc1e5e964cab to < 0bdee4118340c5a756220c1b29a7dab86bb0aa65affected
  • 0871561055e666da421d779397efcc1e5e964cab to < 3a164f640953cc982804746e772d379171aff5c6affected
  • 0871561055e666da421d779397efcc1e5e964cab to < f67d368d26764a357691b2b3a33d3cb55b435bfcaffected
  • 0871561055e666da421d779397efcc1e5e964cab to < ba2c83167b215da30fa2aae56b140198cf8d8408affected

Linux Linux

Default version status: affected

  • 6.2affected
  • 0 to < 6.2unaffected
  • 6.6.134 to ≤ 6.6.*unaffected
  • 6.12.81 to ≤ 6.12.*unaffected
  • 6.18.22 to ≤ 6.18.*unaffected
  • 6.19.12 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References