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CVE-2026-89846— scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read

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：对 rsp_info_len 进行边界限制，以避免越界读取 sense 数据 在 函数中，FWI2 状态处理路径会推进 指针，并通过 缩减 ： 其中， 是一个直接从目标设备的 FCP 响应中获取的 32 位值（即 ），而 是 IOCB 数据区域的大小（24xx 为 28 字节，29xx 为 60 字节）。如果目标设备存在恶意行为或存在缺陷，报告了一个大于 的 ，无符号减法会发生下溢，导致其变为一个极大的值，并使 指针越界。 下溢后的 会在 中削弱

CVSS 9.1 · Critical EPSS 0.69% · P52

Possible ATT&CK Techniques 1 AI

T1055.002 · Portable Executable Injection

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 5544213be7b4fb693730106a6d70a8cc1aa7cdf6< 125b12861c726e58448bb95d55b04851fb131d1f affected
5544213be7b4fb693730106a6d70a8cc1aa7cdf6< e57ace988bda5693f7b3645f652ea4b4220870ee affected
5544213be7b4fb693730106a6d70a8cc1aa7cdf6< 6b08c0cb110a1fba92f99d655020198489699815 affected
5544213be7b4fb693730106a6d70a8cc1aa7cdf6< be75ab791c9b3baca66c70ce03443afebc83acda affected
5544213be7b4fb693730106a6d70a8cc1aa7cdf6< ebc41dfc59d190956e0113e8bd90c28f6f21e8b9 affected
5544213be7b4fb693730106a6d70a8cc1aa7cdf6< d7f7746ff031ae45724881261804f4bf5317c985 affected
5544213be7b4fb693730106a6d70a8cc1aa7cdf6< f6e8977bce887481b2b2b0e2e14a791270741cfb affected
5544213be7b4fb693730106a6d70a8cc1aa7cdf6< ca6d880d6c70cb7946e7b3e05d7285f271b6d99e affected
… +10 more rows
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I. Basic Information for CVE-2026-89846

Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read In qla2x00_status_entry(), the FWI2 status path advances sense_data and shrinks par_sense_len by rsp_info_len: if (IS_FWI2_CAPABLE(ha)) { sense_data += rsp_info_len; par_sense_len -= rsp_info_len; } rsp_info_len is a 32-bit value taken directly from the target's FCP response (sf.rsp_data_len), while par_sense_len is the IOCB data area size (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target reporting an rsp_info_len larger than par_sense_len makes the unsigned subtraction underflow to a huge value and advances sense_data out of bounds. The underflowed par_sense_len then defeats the cap in qla2x00_handle_sense(): if (sense_len > par_sense_len) sense_len = par_sense_len; memcpy(cp->sense_buffer, sense_data, sense_len); so the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the out-of-bounds sense_data pointer, leaking adjacent response-ring/heap memory into the command's sense buffer. Clamp rsp_info_len to par_sense_len before the subtraction so par_sense_len can never underflow and sense_data stays within the IOCB data area. The fix sits before the comp_status switch, covering both qla2x00_handle_sense() call sites.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
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 5544213be7b4fb693730106a6d70a8cc1aa7cdf6 ~ 125b12861c726e58448bb95d55b04851fb131d1f -
Linux Linux 2.6.36 -

II. Public POCs for CVE-2026-89846

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III. Intelligence Information for CVE-2026-89846

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Other References for CVE-2026-89846 (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-2026-89783 9.8 CRITICAL xfrm6: fix out-of-bounds write in xfrm6_input_addr() when secpath is full
CVE-2026-89788 9.8 CRITICAL ksmbd: fix tree connection use-after-free in smb2_tree_connect()
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-2026-89914 9.3 CRITICAL KVM: arm64: Sign-extend VA for range-based TLBI invalidation
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-2026-89918 9.3 CRITICAL KVM: arm64: Correctly handle end of VA space TLBI invalidation

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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