{"id":"CVE-2026-89854","revision":"af5b98653f204edfbb7b923388a9a200","records":[{"revision":"af5b98653f204edfbb7b923388a9a200","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89854","aliases":[],"title":"scsi: qla2xxx: Fix cs84xx use-after-free on host teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix cs84xx use-after-free on host teardown\n\nqla84xx_put_chip() drops the last reference to ha->cs84xx and frees it via\n__qla84xx_chip_release() without clearing ha->cs84xx. During teardown it ran\nbefore scsi_remove_host(), which is what removes the 84xx_fw_version host\nsysfs attribute. A concurrent read of that attribute in the window between\nthe two calls executes qla24xx_84xx_fw_version_show(), which dereferences\nthe freed ha->cs84xx, resulting in a use-after-free.\n\nMove qla84xx_put_chip() to after scsi_remove_host() in both\nqla2x00_remove_one() and qla2x00_disable_board_on_pci_error(). Once\nscsi_remove_host() returns, the sysfs attribute is gone and kernfs has\ndrained any in-flight show(), so no reader can touch cs84xx; the put still\nruns before the host and ha are freed.","state":0,"publishedAt":"2026-09-16T10:31:27.906+00:00","modifiedAt":"2026-10-19T08:53:47.075+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_os.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"fe1b806f4f7172b1eae18ddeebb7d8fb351043f7\",\n                            \"lessThan\": \"8c1ebcade6aac58137f2645b579894301febabf3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe1b806f4f7172b1eae18ddeebb7d8fb351043f7\",\n                            \"lessThan\": \"1d8bbc4344b9367d9d54731475d745fbc9ea28f2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe1b806f4f7172b1eae18ddeebb7d8fb351043f7\",\n                            \"lessThan\": \"2c3b17ee53f034936f7398dbf4d143e608b7c35c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe1b806f4f7172b1eae18ddeebb7d8fb351043f7\",\n                            \"lessThan\": \"ae09260be7454ed7630a913f147591a25e3a9d09\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe1b806f4f7172b1eae18ddeebb7d8fb351043f7\",\n                            \"lessThan\": \"fcf0804dfe05862007189ac9dc4dc2063be36de1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe1b806f4f7172b1eae18ddeebb7d8fb351043f7\",\n                            \"lessThan\": \"8286a9095fb59751fba171afa2b4f590271c87d5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe1b806f4f7172b1eae18ddeebb7d8fb351043f7\",\n                            \"lessThan\": \"122bf170c94a3797531b12fee580639a5dc893ed\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fe1b806f4f7172b1eae18ddeebb7d8fb351043f7\",\n                            \"lessThan\": \"33d102102d925357c5fd172dd6672a27d74b3215\",\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_os.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.14\",\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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/8c1ebcade6aac58137f2645b579894301febabf3","https://git.kernel.org/stable/c/1d8bbc4344b9367d9d54731475d745fbc9ea28f2","https://git.kernel.org/stable/c/2c3b17ee53f034936f7398dbf4d143e608b7c35c","https://git.kernel.org/stable/c/ae09260be7454ed7630a913f147591a25e3a9d09","https://git.kernel.org/stable/c/fcf0804dfe05862007189ac9dc4dc2063be36de1","https://git.kernel.org/stable/c/8286a9095fb59751fba171afa2b4f590271c87d5","https://git.kernel.org/stable/c/122bf170c94a3797531b12fee580639a5dc893ed","https://git.kernel.org/stable/c/33d102102d925357c5fd172dd6672a27d74b3215"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89854","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89854","identifiers":["CVE-2026-89854"]},"retained":false,"historicalAffected":[]}],"coverage":[]}