{"id":"CVE-2026-98015","published":"2026-09-25T11:17:29.927","lastModified":"2026-09-25T11:17:29.927","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put\n\nIn mlx5_eswitch_termtbl_put(), the zero-ref cleanup check reads\ntt->ref_count after termtbl_mutex has been released.  Two concurrent\ncallers on the same mlx5_termtbl_handle race: one decrements ref_count\nto zero, removes the hash entry, and calls kfree(tt) while the other\nhas already dropped the mutex and is about to evaluate\nif (!tt->ref_count), producing a use-after-free.\n\nFix this by capturing the result of the decrement into a stack-local\nlast variable before dropping the mutex.  The cleanup decision is now\nmade entirely under termtbl_mutex, and tt is not touched after\nkfree.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1","tags":[]},{"url":"https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36","tags":[]},{"url":"https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596","tags":[]},{"url":"https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}