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CVE-2026-89844— scsi: qla2xxx: Hold vport_slock for host map update in report ID acquisition

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已得到解决： scsi: qla2xxx：在报告 ID 获取过程中，更新主机映射时需持有 vport_slock 在 函数中，format-1 处理路径在获取 vport 引用后便释放了 ，随后在未持锁的状态下调用 。该函数最终会执行 ，通过 / / 修改 红黑树。根据文档说明，调用此函数时必须由调用方持有 。在未持锁的情况下执行，可能与并发的 更新发生竞态条件，导致红黑树结构损坏。 同一函数中的 format-2 路径已经使用 包裹其 更新操作（ ），而 format-1 路径是唯

CVSS 8.8 · High EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 430eef03a763e5e76a371ba6d02779ae4a64b6ea< e8f1b0cb9782338c6341ceed816e9c1243743cdd affected
430eef03a763e5e76a371ba6d02779ae4a64b6ea< 6ed66e2a67bbd22877008ff9aa64bd574a7fc011 affected
430eef03a763e5e76a371ba6d02779ae4a64b6ea< 776e4e8cbcf155302f430ce9793d1502e3c113a0 affected
430eef03a763e5e76a371ba6d02779ae4a64b6ea< 7d0b3f745efb24c0aac5e06b49b3420bc65d23b9 affected
430eef03a763e5e76a371ba6d02779ae4a64b6ea< 7944039ba9cb5c3a935d17c91004e3b8649ff58e affected
6.3 affected
< 6.3 unaffected
6.6.157≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-89844

Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Hold vport_slock for host map update in report ID acquisition
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Hold vport_slock for host map update in report ID acquisition qla24xx_report_id_acquisition() format-1 handling drops vport_slock after taking the vport reference and then calls qla_update_host_map() without the lock. That reaches qla_update_vp_map(), which mutates the ha->host_map btree via btree_insert32()/btree_update32()/btree_remove32() and is documented to require vport_slock to be held by the caller. Running it unlocked can race concurrent host_map updates and corrupt the btree. The format-2 path in the same function already wraps its host_map update (SET_AL_PA) in vport_slock; the format-1 path is the lone outlier. Hold vport_slock across the format-1 qla_update_host_map() call to honor the documented locking contract. The vref_count taken in the loop keeps the vport valid, so this only adds the missing host_map serialization.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 430eef03a763e5e76a371ba6d02779ae4a64b6ea ~ e8f1b0cb9782338c6341ceed816e9c1243743cdd -
Linux Linux 6.3 -

II. Public POCs for CVE-2026-89844

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III. Intelligence Information for CVE-2026-89844

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Other References for CVE-2026-89844 (5)

Same Patch Batch · Linux · 2026-09-16 · 276 CVEs total

CVE-2026-90037 9.8 CRITICAL NFSD: Prevent client use-after-free during close_lru reaping
CVE-2026-90012 9.8 CRITICAL spi: Fix DMA mapping ownership on partial map failure
CVE-2026-89970 9.8 CRITICAL nvmet-auth: Synchronize timeout work during SQ teardown
CVE-2026-89969 9.8 CRITICAL nvmet-tcp: fix out-of-bounds write when receiving an over-long PDU
CVE-2026-89857 9.8 CRITICAL scsi: qla2xxx: Hold qpair lock when sending NVMe LS reject
CVE-2026-89972 9.8 CRITICAL nvme: add missing SRCU grace period in error path
CVE-2026-89847 9.8 CRITICAL scsi: qla2xxx: Avoid double completion in async IOCB timeout
CVE-2026-89990 9.8 CRITICAL ceph: lock mutex in ceph_mds_check_access()
CVE-2026-90036 9.8 CRITICAL NFSD: Prevent client use-after-free during blocked-lock reaping
CVE-2026-90038 9.8 CRITICAL NFSD: Prevent client use-after-free during export state revocation
CVE-2026-90048 9.8 CRITICAL fs/ntfs3: fix slab-out-of-bounds write in ni_create_attr_list()
CVE-2026-89783 9.8 CRITICAL xfrm6: fix out-of-bounds write in xfrm6_input_addr() when secpath is full
CVE-2026-90042 9.8 CRITICAL ceph: properly decrypt filenames in vmalloc() buffers
CVE-2026-89788 9.8 CRITICAL ksmbd: fix tree connection use-after-free in smb2_tree_connect()
CVE-2026-89778 9.8 CRITICAL isofs: fix out-of-bounds page array access on empty zisofs block
CVE-2026-89915 9.3 CRITICAL KVM: arm64: Remove VM-wide VNCR mapping counter
CVE-2026-90049 9.3 CRITICAL net: skbuff: don't skb_tx_error() the source skb in skb_zerocopy()
CVE-2026-89775 9.3 CRITICAL KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation
CVE-2026-89918 9.3 CRITICAL KVM: arm64: Correctly handle end of VA space TLBI invalidation
CVE-2026-89916 9.3 CRITICAL KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-89844

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