CVE-2026-97532scsi: qla2xxx: Null out freed pointers in qla2x00_mem_alloc() error path

Official description

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Null out freed pointers in qla2x00_mem_alloc() error path When qla2x00_mem_alloc() fails, qla2x00_probe_one() jumps to probe_hw_failed and calls qla2x00_mem_free(). Several error labels in qla2x00_mem_alloc() freed adapter members (elsrej.c, purex_dma_pool, flt, sfp_data, loop_id_map, async_pd, sf_init_cb, ex_init_cb, npiv_info) but left the pointers dangling. qla2x00_mem_free() then freed them a second time. Worse, for the dma_pool members it issued dma_pool_free(ha->s_dma_pool, ...) after s_dma_pool had already been destroyed and set to NULL at fail_s_dma_pool, dereferencing a NULL pool. Clear each freed pointer (and its DMA handle) in the error labels so the subsequent qla2x00_mem_free() skips them.

Affected packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/e6732abc33c41772192ef8717354a5574a5c2ebf
• https://git.kernel.org/stable/c/aea0901d35beb3acc8a4086fb00c5b9c0e9c83ab
• https://git.kernel.org/stable/c/d3dee064ab9d705f6f652c639c55d7ea74df87cc
• https://git.kernel.org/stable/c/5e0d6ffabbbd86b3fb9168b9dbb62190ecb20d84
• https://git.kernel.org/stable/c/84f5de696b8c924aeb4bf430a0bdc762fc50e99f
• https://git.kernel.org/stable/c/a57570229edb7a0990d5c8067daeb9ac8858a961
• https://git.kernel.org/stable/c/286d9594a022dd7e0caa3de9daa63b896bc70d43
• https://git.kernel.org/stable/c/6d90f0feb929f6c0f3010f9af4747c7230b75993