CVE-2026-31730
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.
Слабость
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.
Затронутые продукты
- linux linux_kernel
Источники
- 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
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