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CVE-2026-89853— scsi: qla2xxx: Fix FCE trace use-after-free during firmware dump

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，以下漏洞已得到修复： scsi: qla2xxx: 修复固件转储过程中 FCE 跟踪信息的释放后使用（use-after-free）问题 函数在仅持有 的情况下释放并清空了 。而依赖固件转储的调用者 和 在持有 时读取 （先进行空指针检查，再复制缓冲区），且从不获取 。因此，若通过 debugfs 禁用 FCE，可能会在转储过程中的空指针检查与缓冲区复制之间释放该 DMA 缓冲区，从而引发释放后使用（use-after-free）。 修复方案： 在持有 时将 置空（unpublish），然后

AI Predicted 5.5 Difficulty: Hard EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 25

VendorProduct Version RangeStatus
Linux Linux 3a5a789494875376d1f8063ec5ecc6beafda2ce1< 423487f03e325b8665d20a2a3171fe012b1a4fa9 affected
73d3d3c66f108bc47922490f8500842530139975< 7bd308cd893e8cce023d03a40a2f0adccaff0175 affected
57c029cab0d908942e3ed9ff9fd0361144d01944< edc464a4fc96e2720d166e7cc7e7a6827b086760 affected
217230bc8796a922d5b15a9a94ec4414b2d2b3e3< 6003e79148eca73d7cafb076f5be47e234d543d0 affected
2cf3c3fe9a11aa168e80c966494c58548b9aed5d< ef9b89f6c92274c3670403fd06130ca25f685050 affected
841df27d619ee1f5ca6473e15227b39d6136562d< 8e7a26931b6111583cfeaf49c068f26524dc3af2 affected
841df27d619ee1f5ca6473e15227b39d6136562d< 41ef7edde27ac87d55ffc703da44e78aa8c2e896 affected
841df27d619ee1f5ca6473e15227b39d6136562d< 53298efcbbb0f0438366d45cb7ed7e6d93dd5531 affected
… +17 more rows
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I. Basic Information for CVE-2026-89853

Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Fix FCE trace use-after-free during firmware dump
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix FCE trace use-after-free during firmware dump qla2x00_free_fce_trace() freed and cleared ha->fce while holding only fce_mutex. The firmware-dump consumers qla27xx_fwdt_entry_t264() and qla25xx_copy_fce() read ha->fce (NULL check followed by a copy of the buffer) under hardware_lock and never take fce_mutex. A debugfs FCE disable could therefore free the DMA buffer between a dump's NULL check and its copy, resulting in a use-after-free. Unpublish ha->fce under hardware_lock, then release the lock and free the DMA buffer (dma_free_coherent() may sleep). A concurrent dump either completes its check and copy with the buffer still valid, or observes ha->fce == NULL and skips it.
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 3a5a789494875376d1f8063ec5ecc6beafda2ce1 ~ 423487f03e325b8665d20a2a3171fe012b1a4fa9 -
Linux Linux 6.14 -

II. Public POCs for CVE-2026-89853

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III. Intelligence Information for CVE-2026-89853

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Other References for CVE-2026-89853 (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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