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.
Product status
0871561055e666da421d779397efcc1e5e964cab (git) before 4b8e527aca357a6488680713bd88007cf8f547fe
0871561055e666da421d779397efcc1e5e964cab (git) before 0bdee4118340c5a756220c1b29a7dab86bb0aa65
0871561055e666da421d779397efcc1e5e964cab (git) before 3a164f640953cc982804746e772d379171aff5c6
0871561055e666da421d779397efcc1e5e964cab (git) before f67d368d26764a357691b2b3a33d3cb55b435bfc
0871561055e666da421d779397efcc1e5e964cab (git) before ba2c83167b215da30fa2aae56b140198cf8d8408
6.2
Any version before 6.2
6.6.134 (semver)
6.12.81 (semver)
6.18.22 (semver)
6.19.12 (semver)
7.0 (original_commit_for_fix)
References
git.kernel.org/...c/4b8e527aca357a6488680713bd88007cf8f547fe
git.kernel.org/...c/0bdee4118340c5a756220c1b29a7dab86bb0aa65
git.kernel.org/...c/3a164f640953cc982804746e772d379171aff5c6
git.kernel.org/...c/f67d368d26764a357691b2b3a33d3cb55b435bfc
git.kernel.org/...c/ba2c83167b215da30fa2aae56b140198cf8d8408