{"cve":"CVE-2026-89857","nvd":{"published":"2026-09-16T11:16:53.573","modified":"2026-10-19T09:18:30.110","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Hold qpair lock when sending NVMe LS reject\n\nqla_nvme_ls_reject_iocb() allocates from and advances the request ring\nthrough __qla2x00_alloc_iocbs() (which assumes the hardware_lock is\nheld) and qla2x00_start_iocbs() (which advances the ring and rings the\nrequest-in doorbell), but takes no lock itself. Two of its callers\ninvoke it without the producer lock held:\n\n - qla_nvme_xmt_ls_rsp(), the NVMe-FC .xmt_ls_rsp transport callback, on\n   its error path, and\n\n - qla2xxx_process_purls_pkt(), run from the purex work/DPC context.\n\nBoth use ha->base_qpair, whose qp_lock_ptr is hardware_lock, so they can\nrun concurrently with normal I/O submission on the base ring and corrupt\nthe ring producer state, leading to duplicated or dropped commands. The\nthird caller, qla2xxx_process_purls_iocb(), runs inside\nqla24xx_process_response_queue() with the qpair lock already held and is\nsafe; that is also why the lock cannot be taken inside the helper itself\n(it would recursively re-acquire hardware_lock on the response path).\n\nTake qp_lock_ptr around the two unlocked callers and document the helper\nas caller-locked. Both run in process context, so spin_lock_irqsave() is\nused and nothing in the locked region sleeps.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":[],"references":["https://git.kernel.org/stable/c/11834e5773e20fd3742d7eb900876e66b9e7d029","https://git.kernel.org/stable/c/7eb618877503edbf17aa65e357a81bda1fc8f163","https://git.kernel.org/stable/c/b02ff132017b28222187ebcf95ce7f4cb576cd36","https://git.kernel.org/stable/c/b3a362466db6b8ec47cc537ac641ac197fa69b5d","https://git.kernel.org/stable/c/f743488e4a203049f27ec5d8cd0caccc483af01e"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-89857","score":0.00618,"percentile":0.493,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}