{"id":"CVE-2026-89845","published":"2026-09-16T11:16:51.720","lastModified":"2026-09-16T11:16:51.720","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Avoid req_q_map double-read in qla2x00_error_entry()\n\nqla2x00_error_entry() reads ha->req_q_map[que] twice: once for the NULL\ncheck and again when assigning it to req. The map slot is cleared by\nqla25xx_free_req_que() (ha->req_q_map[que_id] = NULL under mq_lock)\nduring queue teardown, while the response-queue interrupt that drives\nqla2x00_error_entry() is still registered (the IRQ is released later in\nqla25xx_free_rsp_que()). If the slot is set to NULL between the two\nreads, req becomes NULL and is dereferenced.\n\nRead the slot once into req and NULL-check the local before use. mq_lock\nis a mutex and cannot be taken from interrupt context, so the single\nread plus local check is the appropriate fix for the reported NULL\ndereference.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/1b995cf4157465357d66ba096e7cdaafab9972e7","tags":[]},{"url":"https://git.kernel.org/stable/c/1c90b74e484ba48f31944fe04963d99e01ac3767","tags":[]},{"url":"https://git.kernel.org/stable/c/35124cfa9898b2088ee72859e573e0876aff66fc","tags":[]},{"url":"https://git.kernel.org/stable/c/5dd9bec8004ba93cee8b689bf54ce294f59e5e3c","tags":[]},{"url":"https://git.kernel.org/stable/c/c845f2597787ef70159a32566669e308b2807a56","tags":[]},{"url":"https://git.kernel.org/stable/c/d79376fbd2a076de82c1cd8aa0b600b300c75a44","tags":[]},{"url":"https://git.kernel.org/stable/c/deb8abde83a799d2501f3977f6d6051000253f5e","tags":[]},{"url":"https://git.kernel.org/stable/c/fe04b31e386aee4cc3a18f07462af146037dc389","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}