{"id":"CVE-2026-89847","revision":"d779fdc22170477780fb4142962a56c9","records":[{"revision":"d779fdc22170477780fb4142962a56c9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89847","aliases":[],"title":"scsi: qla2xxx: Avoid double completion in async IOCB timeout","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Avoid double completion in async IOCB timeout\n\nqla2x00_async_iocb_timeout() tries to abort a timed-out async IOCB. When\nqla24xx_async_abort_cmd() fails, both the SRB_LOGIN_CMD path and the\nSRB_CTRL_VP/default path scan outstanding_cmds[] for the SRB and then\ncall sp->done(sp, QLA_FUNCTION_TIMEOUT) unconditionally, without checking\nwhether the SRB was actually found and removed.\n\nIf the response ISR completes the same handle first, it removes the SRB\nunder qp_lock_ptr and runs sp->done() -> complete(sp->comp). The\nsubmitter qla24xx_control_vp() wakes from wait_for_completion(), clears\nsp->comp, drops its reference and returns, reclaiming the on-stack\ncompletion. The timer reference keeps the SRB alive across the timeout\nhandler, but not the submitter's stack. The timeout then issues a second\nsp->done() -> qla_ctrlvp_sp_done(), which evaluates \"if (sp->comp)\ncomplete(sp->comp)\"; with the pointer loaded before the submitter's NULL\nstore, complete() writes into the freed stack frame, a use-after-free.\n\nTrack whether this path removed the SRB from outstanding_cmds and only\ncall sp->done() when it did, so the command is completed exactly once by\nwhichever path owns it. This mirrors the sp_found guard already used in\nqla24xx_abort_iocb_timeout().","state":0,"publishedAt":"2026-09-16T10:31:21.286+00:00","modifiedAt":"2026-10-19T08:53:40.165+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/scsi/qla2xxx/qla_init.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f6145e86d21fccd59bbb87bc1e1eb076658fd79a\",\n                            \"lessThan\": \"71a7b6e3c7f121439f51a058e53d4a8e05b63dec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f6145e86d21fccd59bbb87bc1e1eb076658fd79a\",\n                            \"lessThan\": \"7257b5e1fb6c9387714f66e01b79ec82b717eede\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f6145e86d21fccd59bbb87bc1e1eb076658fd79a\",\n                            \"lessThan\": \"f5b660e0b0d9190d8853c795c2522cc5f8c93003\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f6145e86d21fccd59bbb87bc1e1eb076658fd79a\",\n                            \"lessThan\": \"6e217a9482eabbd8b29847be334c74cf468d3544\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f6145e86d21fccd59bbb87bc1e1eb076658fd79a\",\n                            \"lessThan\": \"d6d856c722f40f0694ff755208552e658db6dd42\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f6145e86d21fccd59bbb87bc1e1eb076658fd79a\",\n                            \"lessThan\": \"9fa1d71233a82416492d9c9de9756ebe140fe714\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f6145e86d21fccd59bbb87bc1e1eb076658fd79a\",\n                            \"lessThan\": \"845d4abd92cd2f97551356c8b281ad6e197acb07\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f6145e86d21fccd59bbb87bc1e1eb076658fd79a\",\n                            \"lessThan\": \"bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/scsi/qla2xxx/qla_init.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/71a7b6e3c7f121439f51a058e53d4a8e05b63dec","https://git.kernel.org/stable/c/7257b5e1fb6c9387714f66e01b79ec82b717eede","https://git.kernel.org/stable/c/f5b660e0b0d9190d8853c795c2522cc5f8c93003","https://git.kernel.org/stable/c/6e217a9482eabbd8b29847be334c74cf468d3544","https://git.kernel.org/stable/c/d6d856c722f40f0694ff755208552e658db6dd42","https://git.kernel.org/stable/c/9fa1d71233a82416492d9c9de9756ebe140fe714","https://git.kernel.org/stable/c/845d4abd92cd2f97551356c8b281ad6e197acb07","https://git.kernel.org/stable/c/bb45bc4bd53c95a7bf6f782577b5ede94c0f8aa8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89847","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89847","identifiers":["CVE-2026-89847"]},"retained":false,"historicalAffected":[]}],"coverage":[]}