{"id":"CVE-2026-89848","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Quiesce response IRQ before freeing request queue\n\nqla2xxx_delete_qpair() deletes the request queue before the response\nqueue","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Quiesce response IRQ before freeing request queue\n\nqla2xxx_delete_qpair() deletes the request queue before the response\nqueue. qla25xx_delete_req_que() f…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= d74595278f4ab192af66d9e60a9087464638beee < 7ac5be2a8609679fc6bbfea881360444a5ce8202","Linux >= d74595278f4ab192af66d9e60a9087464638beee < 1486cc18be3e2b4c2a730f4a1b0448d009381b3d","Linux >= d74595278f4ab192af66d9e60a9087464638beee < 10e9f05f7fd0a103886a867ec8afe621fe4b906a","Linux >= d74595278f4ab192af66d9e60a9087464638beee < 157ca7d1af45f87aa14a286754f19c3f72386988","Linux >= d74595278f4ab192af66d9e60a9087464638beee < 505753ec2594c6af09a601f0dd60be7d840c1d2d","Linux 4.10"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:18:13.107","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89848","references":[{"url":"https://git.kernel.org/stable/c/10e9f05f7fd0a103886a867ec8afe621fe4b906a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1486cc18be3e2b4c2a730f4a1b0448d009381b3d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/157ca7d1af45f87aa14a286754f19c3f72386988","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/505753ec2594c6af09a601f0dd60be7d840c1d2d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7ac5be2a8609679fc6bbfea881360444a5ce8202","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.994Z","epss":0.00508,"epssPercentile":0.42406,"slug":"CVE-2026-89848","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Quiesce response IRQ before freeing request queue\n\nqla2xxx_delete_qpair() deletes the request queue before the response\nqueue. qla25xx_delete_req_que() frees the request queue memory\n(kfree(req) in qla25xx_free_req_que()), but the response-queue MSI-X is\nonly released later, in qla25xx_free_rsp_que(). In that window the\nresponse interrupt can still fire, qla2xxx_msix_rsp_q() queues\nqpair->q_work, and qla_do_work() -> qla24xx_process_response_queue()\ndereferences the now-freed rsp->req (LOGINOUT/CT/ELS entries and the\nstatus path), a use-after-free.\n\nThe cancel_work_sync() added for the qpair teardown lives in the\nresponse free path, which runs after the request queue is already freed,\nso it does not protect rsp->req.\n\nRelease the response-queue interrupt and flush qpair->q_work before\ndeleting the request queue, so no late completion can reach the freed\nrequest queue. Clearing have_irq makes the subsequent\nqla25xx_free_rsp_que() skip its free_irq(), and the firmware\nqueue-delete order (request then response) is preserved; the\nrequest-delete mailbox completes on the default vector and is unaffected\nby dropping the qpair response interrupt early.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":205200,"id":"CVE-2026-89848","ts":1789570705698,"field":"cvss","old":null,"new":"8.1"},{"seq":205199,"id":"CVE-2026-89848","ts":1789570705698,"field":"severity","old":"none","new":"high"}]}