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CVE-2026-93242— scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()

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 __qla_consume_iocb() 中的响应队列过度消费问题 qla24xx_process_response_queue() 在分派（dispatching）之前就将 ring_ptr 指向了下一个 IOCB，因此当 __qla_consume_iocb() 执行时，ring_ptr 已经指向第一个连续性 IOCB（continuation IOCB）。然而，该函数从 ring_ptr 开始循环执行了 purex->entry_co

AI Predicted 4.4 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux fac2807946c10b9a509b9c348afd442fa823c5f7< a136c311676fd1010b1bde3bcfd410caa2fa040f affected
fac2807946c10b9a509b9c348afd442fa823c5f7< d841707fafba5f80341b82e8c3a4c24fc5aa5132 affected
fac2807946c10b9a509b9c348afd442fa823c5f7< 6e3f129538c32d0019437197735912308c161843 affected
fac2807946c10b9a509b9c348afd442fa823c5f7< bd1534d4afab47f13dfc27fff6f59dd859a0ac3a affected
fac2807946c10b9a509b9c348afd442fa823c5f7< 31715d1e1cbf3a37ce3452635c5602f73fd7abd4 affected
fac2807946c10b9a509b9c348afd442fa823c5f7< df86c27cf1ba9d66f737a1fa56479c6e7efafe4e affected
fac2807946c10b9a509b9c348afd442fa823c5f7< 3ba019bdd89d931499d9476456b5d9c7ab7fa753 affected
5.15 affected
… +8 more rows
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I. Basic Information for CVE-2026-93242

Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix response queue over-consumption in __qla_consume_iocb() qla24xx_process_response_queue() advances ring_ptr past the head IOCB before dispatching, so by the time __qla_consume_iocb() runs, ring_ptr already points at the first continuation IOCB. The function however looped purex->entry_count times starting at ring_ptr. As entry_count includes the head, this consumed one entry too many: it stamped RESPONSE_PROCESSED on the next, unrelated IOCB and advanced the ring past it, silently dropping a legitimate firmware response. The head IOCB's signature was also never marked. Mark the head processed and account for it, then consume only the entry_count - 1 continuation IOCBs, matching __qla_copy_purex_to_buffer().
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 fac2807946c10b9a509b9c348afd442fa823c5f7 ~ a136c311676fd1010b1bde3bcfd410caa2fa040f -
Linux Linux 5.15 -

II. Public POCs for CVE-2026-93242

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III. Intelligence Information for CVE-2026-93242

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Patches & Fixes for CVE-2026-93242 (7)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93221 8.1 HIGH nfsd: convert nfsd_net boolean flags to unsigned long flags word
CVE-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93242

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