Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Quiesce response IRQ before freeing request queue qla2xxx_delete_qpair() deletes the request queue before the response queue. qla25xx_delete_req_que() frees the request queue memory (kfree(req) in qla25xx_free_req_que()), but the response-queue MSI-X is only released later, in qla25xx_free_rsp_que(). In that window the response interrupt can still fire, qla2xxx_msix_rsp_q() queues qpair->q_work, and qla_do_work() -> qla24xx_process_response_queue() dereferences the now-freed rsp->req (LOGINOUT/CT/ELS entries and the status path), a use-after-free. The cancel_work_sync() added for the qpair teardown lives in the response free path, which runs after the request queue is already freed, so it does not protect rsp->req. Release the response-queue interrupt and flush qpair->q_work before deleting the request queue, so no late completion can reach the freed request queue. Clearing have_irq makes the subsequent qla25xx_free_rsp_que() skip its free_irq(), and the firmware queue-delete order (request then response) is preserved; the request-delete mailbox completes on the default vector and is unaffected by dropping the qpair response interrupt early.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d74595278f4ab192af66d9e60a9087464638beee to < 730a18768b27582636b5af343069c30809b763a2affectedd74595278f4ab192af66d9e60a9087464638beee to < be68aef64ab2e633867c4ac946d16644c306fc3daffectedd74595278f4ab192af66d9e60a9087464638beee to < 0a005dcc5e9bf7b31a45422b10f2765b25161389affectedd74595278f4ab192af66d9e60a9087464638beee to < 7ac5be2a8609679fc6bbfea881360444a5ce8202affectedd74595278f4ab192af66d9e60a9087464638beee to < 1486cc18be3e2b4c2a730f4a1b0448d009381b3daffectedd74595278f4ab192af66d9e60a9087464638beee to < 10e9f05f7fd0a103886a867ec8afe621fe4b906aaffectedd74595278f4ab192af66d9e60a9087464638beee to < 157ca7d1af45f87aa14a286754f19c3f72386988affectedd74595278f4ab192af66d9e60a9087464638beee to < 505753ec2594c6af09a601f0dd60be7d840c1d2daffected
Linux Linux
Default version status: affected
4.10affected0 to < 4.10unaffected5.10.273 to ≤ 5.10.*unaffected5.15.224 to ≤ 5.15.*unaffected6.1.191 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.51 to ≤ 6.18.*unaffected7.2.5 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/730a18768b27582636b5af343069c30809b763a2 ↗
- https://git.kernel.org/stable/c/be68aef64ab2e633867c4ac946d16644c306fc3d ↗
- https://git.kernel.org/stable/c/0a005dcc5e9bf7b31a45422b10f2765b25161389 ↗
- https://git.kernel.org/stable/c/7ac5be2a8609679fc6bbfea881360444a5ce8202 ↗
- https://git.kernel.org/stable/c/1486cc18be3e2b4c2a730f4a1b0448d009381b3d ↗
- https://git.kernel.org/stable/c/10e9f05f7fd0a103886a867ec8afe621fe4b906a ↗
- https://git.kernel.org/stable/c/157ca7d1af45f87aa14a286754f19c3f72386988 ↗
- https://git.kernel.org/stable/c/505753ec2594c6af09a601f0dd60be7d840c1d2d ↗