CVE-2026-89851— scsi: qla2xxx: Fix FCE trace enable parsing in debugfs
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，已修复以下漏洞： scsi: qla2xxx：修复 debugfs 中 FCE 跟踪使能解析问题 在调用 时传入了一个 NULL 的结果指针，因此在解析成功时会解引用 NULL 指针，导致内核崩溃（oops）。更严重的是， 的返回值（成功时为 0，失败时为负的 errno）被直接赋值给无符号长整型（unsigned long）的 标志，从而反转了原有的逻辑：一个有效的数字会被当作“禁用”，而解析失败反而会使能 FCE（Fibre Channel Error，光纤通道错误跟踪）。 修复方式：将
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 25
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 3a5a789494875376d1f8063ec5ecc6beafda2ce1< b0c08c08a08b6cca0e7e192bcbe0514e41fcc55f |
affected |
73d3d3c66f108bc47922490f8500842530139975< 9932cbd0b49d0a5ab8378d32650ffb51604ffa35 |
affected | ||
57c029cab0d908942e3ed9ff9fd0361144d01944< f5e245164d187d1ee227140c8b2e83b67f59c1fd |
affected | ||
217230bc8796a922d5b15a9a94ec4414b2d2b3e3< 5762d992dddaf301e7fb78f797de407116847121 |
affected | ||
2cf3c3fe9a11aa168e80c966494c58548b9aed5d< eff41f50461c238bd2c5cd20672a5b53e68d493a |
affected | ||
841df27d619ee1f5ca6473e15227b39d6136562d< 7203d4aed8f444e7376c2dee8d93577b37cf9989 |
affected | ||
841df27d619ee1f5ca6473e15227b39d6136562d< aac0d3cb9199121d2ce5906e06f94b793fac1052 |
affected | ||
841df27d619ee1f5ca6473e15227b39d6136562d< b7368687e3d11f51392d3c4774ec0263d5fbf31f |
affected | ||
| … +17 more rows | |||
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I. Basic Information for CVE-2026-89851
Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Fix FCE trace enable parsing in debugfs
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Fix FCE trace enable parsing in debugfs
qla2x00_dfs_fce_write() called kstrtoul() with a NULL result pointer,
so a successful parse would dereference NULL and oops. Worse, the int
return value (0 on success, negative errno on failure) was assigned to
the unsigned long enable flag, inverting the intended logic: a valid
number was treated as "disable" while a parse failure enabled FCE.
Parse the value into enable and propagate parse errors to userspace.
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
II. Public POCs for CVE-2026-89851
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Other References for CVE-2026-89851 (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 → →
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V. Comments for CVE-2026-89851
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