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CVE-2026-98545— ata: libata-scsi: bound the ATA passthru sense descriptor writes

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： ata: libata-scsi：限制 ATA 直通（passthru）感知（sense）描述符的写入操作 当针对 ATAPI 设备的 ATA PASS-THROUGH 命令失败时，感知缓冲区（sense buffer）会保存设备返回的 REQUEST SENSE 响应。此时， 函数会信任响应中的附加长度字节（即 ），并据此在添加 ATA 状态返回描述符。恶意或存在缺陷的设备可利用该逻辑，通过三种方式诱导内核在 96 字节的缓冲区之外进行读写操作： 函数被传入 作为缓冲

AI Predicted 8.8 Difficulty: Moderate

Affected Version Matrix 15

VendorProduct Version RangeStatus
Linux Linux ce477199c53e3db5a096981c565e232498ddeae4< c698f6deabf680f8f4a1727ef2dc80fe78815fbf affected
97981926224afe17ba3e22e0c2b7dd8b516ee574< d9a7147b93624660626cd7c3b1143715699e1f5c affected
97981926224afe17ba3e22e0c2b7dd8b516ee574< 1603abb0c50420e97cf4a1feddbd5e183c5fdf86 affected
97981926224afe17ba3e22e0c2b7dd8b516ee574< 80fbb0bc4d11683c88f2f9d3997ea02fcada5408 affected
97981926224afe17ba3e22e0c2b7dd8b516ee574< 80320b278fea07ffcda3f57b67b61658e0a4e1ca affected
67d9d0b6ae4aaf2c4cef103a96a145c7fdfb15f8 affected
6.6.44< 6.6.158 affected
6.10.3< 6.11 affected
… +7 more rows
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I. Basic Information for CVE-2026-98545

Vulnerability Information
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Vulnerability Title
ata: libata-scsi: bound the ATA passthru sense descriptor writes
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ata: libata-scsi: bound the ATA passthru sense descriptor writes When an ATA PASS-THROUGH command to an ATAPI device fails, the sense buffer holds the device's REQUEST SENSE reply, and ata_scsi_set_passthru_sense_fields() trusts its additional length byte, sb[7], when adding the ATA Status Return descriptor. A faulty or malicious device can use that to make the kernel read and write past the 96-byte buffer in three ways: - scsi_sense_desc_find() is passed sb[7] + 8 as the buffer length, so its clamp against sb[7] does nothing and the walk runs off the end. - A type-9 descriptor found near the end is filled in unchecked. - A new descriptor at sb[8 + len] needs len + 22 bytes, not len + 14, so len 75..82 writes up to 8 bytes past the end. Reproduced with KASAN under qemu, with the emulated ATAPI REQUEST SENSE reply patched: BUG: KASAN: slab-out-of-bounds in scsi_sense_desc_find+0x1a5/0x210 BUG: KASAN: slab-out-of-bounds in ata_scsi_qc_complete+0x1a15/0x1a50 Both are gone with this patch, and a valid descriptor is still filled in.
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 ce477199c53e3db5a096981c565e232498ddeae4 ~ c698f6deabf680f8f4a1727ef2dc80fe78815fbf -
Linux Linux 6.11 -

II. Public POCs for CVE-2026-98545

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III. Intelligence Information for CVE-2026-98545

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Patches & Fixes for CVE-2026-98545 (5)

Same Patch Batch · Linux · 2026-10-18 · 436 CVEs total

CVE-2026-98583 nfc: nfcmrvl: validate helper command length before pull
CVE-2026-98570 net: ipv6: keep room for the mac header in dst_dev_overhead()
CVE-2026-98571 net: stmmac: clear stale buf->page after recycling on skb build failure
CVE-2026-98572 bpf: Fix immediate JMP JEQ/JNE on MIPS32
CVE-2026-98573 net: skbuff: fix pull-bound underflow in skb_checksum_setup_ipv6()
CVE-2026-98574 net: bcmgenet: stop Tx NAPI before disabling the queues
CVE-2026-98575 nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid()
CVE-2026-98576 nfc: llcp: fix slab-out-of-bounds reads when logging service names
CVE-2026-98577 nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()
CVE-2026-98578 nfc: st21nfca: validate ISO15693 inventory length
CVE-2026-98579 nfc: llcp: fix sdreq TLV list leak on parse/alloc/send failure
CVE-2026-98580 nfc: llcp: Fix race condition in accept_queue lifecycle
CVE-2026-98581 nfc: llcp: Fix list corruption / refcount desync in nfc_llcp_recv_dm()
CVE-2026-98582 nfc: st21nfca: validate received frame size
CVE-2026-98594 tg3: clean up PHYLIB resources on probe failure
CVE-2026-98591 bpf: Fix bounds check for skb-backed dynptrs
CVE-2026-98592 net: spacemit: clear TX descriptor on fragment mapping failure
CVE-2026-98593 s390/debug: Fix NULL pointer dereference in debug_info_copy()
CVE-2026-98590 bpf: Fix bpf_sock context code generation
CVE-2026-98595 udp: remove a disconnected socket from the 4-tuple hash table

Showing top 20 of 436 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98545

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