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CVE-2026-89852— scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()

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.

以下是该漏洞描述的中文翻译： 在 Linux 内核中，已修复以下漏洞： 标题： scsi: qla2xxx: 在 中将邮箱结构体初始化为零 描述： 结构体在栈上分配，但未被初始化。 存在多个提前返回路径（如 PCI 永久性故障、设备失效、EEH 忙、ISP 中止挂起、邮箱访问超时、清空邮箱等），这些路径直接返回，而没有将输入邮箱寄存器写回 。 随后， 会无条件地将 （以及 ）复制到调用者的 数组中，而不管函数返回值如何。 在这种情况下，被复制的值是未初始化的内核栈内存内容，随后通过 和 sysfs 处理器暴露给用户

AI Predicted 3.1 Difficulty: Moderate EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 4d4df1932b6b116aecc81039066fec27f2050762< f8fc5cc6b3284506c6ab83c822c48133377668bb affected
4d4df1932b6b116aecc81039066fec27f2050762< f29695b1138ae2539c5cd6cdaba9b1b072aaa81a affected
4d4df1932b6b116aecc81039066fec27f2050762< 13d645a2cdb224d27205368f3e3c68bb160daf97 affected
4d4df1932b6b116aecc81039066fec27f2050762< 2f847f06bb223aa895eea91fc9e5e2d6314038eb affected
4d4df1932b6b116aecc81039066fec27f2050762< 1f49e861c18caf8eef7f0ad9a2c5034f88a6ba79 affected
4d4df1932b6b116aecc81039066fec27f2050762< e6cfb1ee18336aab41a0941d6d3ea5009aaafc05 affected
4d4df1932b6b116aecc81039066fec27f2050762< 9f31de4d07e4cde91dfc24522993a5fbb4d67083 affected
4d4df1932b6b116aecc81039066fec27f2050762< 9efaa782845b4d5fb3e01242be0d06ebc7428d8f affected
… +10 more rows
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I. Basic Information for CVE-2026-89852

Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Zero mailbox struct in qla2x00_get_firmware_state() The mbx_cmd_t is allocated on the stack but left uninitialized. qla2x00_mailbox_command() has several early-return paths (PCI permanent failure, device failed, EEH busy, ISP abort pending, mailbox access timeout, purge mbox) that return without writing the input mailbox registers back into mcp->mb[]. qla2x00_get_firmware_state() then unconditionally copies mcp->mb[1..6] (and mb[12]) into the caller's states[] array regardless of the return value. On such a failure the copied values are uninitialized kernel stack memory, which is then exposed to userspace via the fw_state and mpi_fw_state sysfs handlers. Zero the mailbox struct so a failed query yields deterministic zeroed state instead of leaking stack contents.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 4d4df1932b6b116aecc81039066fec27f2050762 ~ f8fc5cc6b3284506c6ab83c822c48133377668bb -
Linux Linux 2.6.26 -

II. Public POCs for CVE-2026-89852

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III. Intelligence Information for CVE-2026-89852

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Other References for CVE-2026-89852 (8)

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

CVE-2026-90048 9.8 CRITICAL fs/ntfs3: fix slab-out-of-bounds write in ni_create_attr_list()
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-2026-89857 9.8 CRITICAL scsi: qla2xxx: Hold qpair lock when sending NVMe LS reject
CVE-2026-89969 9.8 CRITICAL nvmet-tcp: fix out-of-bounds write when receiving an over-long PDU
CVE-2026-89847 9.8 CRITICAL scsi: qla2xxx: Avoid double completion in async IOCB timeout
CVE-2026-89972 9.8 CRITICAL nvme: add missing SRCU grace period in error path
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-2026-90037 9.8 CRITICAL NFSD: Prevent client use-after-free during close_lru reaping
CVE-2026-89788 9.8 CRITICAL ksmbd: fix tree connection use-after-free in smb2_tree_connect()
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-2026-89778 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-2026-89916 9.3 CRITICAL KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry
CVE-2026-89930 9.3 CRITICAL KVM: nVMX: Service local TLB flushes on failed nested VM-Enter

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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