{"id":"CVE-2026-89844","published":"2026-09-16T11:16:51.567","lastModified":"2026-09-16T15:18:12.703","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Hold vport_slock for host map update in report ID acquisition\n\nqla24xx_report_id_acquisition() format-1 handling drops vport_slock after\ntaking the vport reference and then calls qla_update_host_map() without\nthe lock. That reaches qla_update_vp_map(), which mutates the ha->host_map\nbtree via btree_insert32()/btree_update32()/btree_remove32() and is\ndocumented to require vport_slock to be held by the caller. Running it\nunlocked can race concurrent host_map updates and corrupt the btree.\n\nThe format-2 path in the same function already wraps its host_map update\n(SET_AL_PA) in vport_slock; the format-1 path is the lone outlier.\n\nHold vport_slock across the format-1 qla_update_host_map() call to honor\nthe documented locking contract. The vref_count taken in the loop keeps\nthe vport valid, so this only adds the missing host_map serialization.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/6ed66e2a67bbd22877008ff9aa64bd574a7fc011","tags":[]},{"url":"https://git.kernel.org/stable/c/776e4e8cbcf155302f430ce9793d1502e3c113a0","tags":[]},{"url":"https://git.kernel.org/stable/c/7944039ba9cb5c3a935d17c91004e3b8649ff58e","tags":[]},{"url":"https://git.kernel.org/stable/c/7d0b3f745efb24c0aac5e06b49b3420bc65d23b9","tags":[]},{"url":"https://git.kernel.org/stable/c/e8f1b0cb9782338c6341ceed816e9c1243743cdd","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"This vulnerability in the Linux kernel's qla2xxx driver allows an attacker to corrupt the host_map btree by racing with concurrent updates, potentially leading to system instability or data corruption.","exploitability":"Exploitation requires concurrent access to the vport and host_map, making it moderately difficult. Precondition is the presence of multiple concurrent operations on the same vport.","blast_radius":"If exploited, this could lead to severe system-wide issues, including data corruption or system crashes.","remediation":"Upgrade to the specific version 5.10.104 or later, as published in the advisory.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["kernel","btree","concurrent","corruption"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-30T09:16:29.897Z"}}