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CVE-2026-97530— scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature

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，已解决以下漏洞： scsi: qla2xxx：修复因轮询继续 IOCB 签名导致的软死锁 函数 和 会轮询 字段，检查其是否等于 （值为 ），以此判断下一个继续 IOCB（continuation IOCB）是否已到达。在未检测到该标志时，这些函数会在 上自旋，既不推进环形缓冲区指针，也不递减条目计数。 然而， 字段位于字节偏移量 60 处，而继续 IOCB（即 / 结构体）在该偏移量处承载原始的 FC 帧载荷数据（即 ）。如果接收到的 FC 帧其载荷字节恰好等于 ，则该帧会被错误地解读为“

AI Predicted 7.5 Difficulty: Theoretical EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 9f2475fe7406b8ef5f97099c4980021344872d9f< 3e58eb888ebf265af937f636d05997c60d2f197c affected
9f2475fe7406b8ef5f97099c4980021344872d9f< 6e6c2ba9022eb8f9b062c81bdc6fd24c7b4c4c16 affected
9f2475fe7406b8ef5f97099c4980021344872d9f< 6aa722fca9d2aa1f64094101587f8f4a2f83f6aa affected
9f2475fe7406b8ef5f97099c4980021344872d9f< d7e3fa7d06bf7fcaac186d3c4d635caac166d36c affected
5.9 affected
< 5.9 unaffected
6.12.112≤ 6.12.* unaffected
6.18.53≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-97530

Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix soft lockup polling continuation IOCB signature qla27xx_copy_multiple_pkt() and qla27xx_copy_fpin_pkt() poll rsp_q->ring_ptr->signature for RESPONSE_PROCESSED (0xDEADDEAD) to decide whether the next continuation IOCB has arrived, spinning on cpu_relax() without advancing the ring or decrementing the entry count while it has not. response_t::signature lives at byte offset 60, but a continuation IOCB (sts_cont_entry_t / struct sts_cont_entry_ext) carries raw FC frame payload at that offset (data[56..59]). A received frame whose payload bytes happen to equal 0xDEADDEAD is therefore misread as "not yet arrived", and the loop spins forever in interrupt/DPC context, causing a CPU soft lockup. The poll is also unnecessary: callers of qla27xx_copy_multiple_pkt() (PT_LS4_UNSOL and the NVMe purls path) already gate on qla_chk_cont_iocb_avail(), which guarantees all entry_count IOCBs are present before copying begins. The sibling helper __qla_copy_purex_to_buffer() already drops the signature poll and relies on the entry_type == STATUS_CONT_TYPE guard instead. Remove the signature busy-wait from both helpers, keeping the entry_type guard, and gate the FPIN path with qla_chk_cont_iocb_avail() so it defers and re-processes on the next interrupt once all continuation IOCBs have arrived, mirroring the ELS_AUTH_ELS and PT_LS4_UNSOL arms. With this the signature field is never read on a continuation IOCB, eliminating the payload-aliasing lockup.
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 9f2475fe7406b8ef5f97099c4980021344872d9f ~ 3e58eb888ebf265af937f636d05997c60d2f197c -
Linux Linux 5.9 -

II. Public POCs for CVE-2026-97530

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III. Intelligence Information for CVE-2026-97530

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Patches & Fixes for CVE-2026-97530 (4)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-98116 7.8 HIGH ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF
CVE-2026-97548 7.8 HIGH xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions
CVE-2026-97903 7.8 HIGH exit: hold a reference to thread_pid across proc_flush_pid
CVE-2026-97611 7.8 HIGH net: openvswitch: fix use-after-free of the flow table mask array
CVE-2026-97612 7.8 HIGH net: mpls: clear inner_protocol when the last label is popped
CVE-2026-98073 7.8 HIGH net: Remove conflicting altnames for dying netns in __dev_change_net_namespace().
CVE-2026-97602 7.8 HIGH inet: frags: invalidate queues before flushing them
CVE-2026-97577 7.8 HIGH media: verisilicon: rockchip: reject AV1 frames exceeding the tile capacity

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-97530

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