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CVE-2026-98159— wifi: mt76: mt7921: validate CLC firmware records

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： wifi: mt76: mt7921: 验证 CLC 固件记录 CLC 区域由固件提供，但加载程序完全信任区域计数和每条记录的长度。格式错误的固件映像可能导致区域表指针位于固件缓冲区之前，使记录遍历循环无法正确前进，或导致索引 phy->clc 越界。在解引用或复制数据之前，需验证表及记录的边界是否合法。

AI Predicted 7.8 Difficulty: Hard EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125< 46673662402884ca55a869e4ebe956e08e8b6b05 affected
23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125< 740272d46ffc8231709a5e774cf5e4a5785b8a02 affected
23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125< 602a950134ee2940136f60797e4457c3983b06ce affected
23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125< 3896be051e928c891922d91de94c99519d215dff affected
23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125< 3c505e2af16a9320f4355218394a955fbbc65322 affected
23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125< 9417c5818a0146980c2608fda94c908e604eb033 affected
6.1 affected
< 6.1 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-98159

Vulnerability Information
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Vulnerability Title
wifi: mt76: mt7921: validate CLC firmware records
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: validate CLC firmware records The CLC region is supplied by firmware, but the loader trusts the region count and each record length. A malformed image can make the region table pointer precede the firmware buffer, make the record loop fail to advance, or index phy->clc past its end. Validate the table and record bounds before dereferencing or copying.
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 23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 ~ 46673662402884ca55a869e4ebe956e08e8b6b05 -
Linux Linux 6.1 -

II. Public POCs for CVE-2026-98159

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III. Intelligence Information for CVE-2026-98159

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Patches & Fixes for CVE-2026-98159 (6)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-98122 7.8 HIGH vxlan: mdb: Fix use-after-free in vxlan_mdb_remote_src_del()
CVE-2026-97575 7.8 HIGH media: v4l2-ctrls: validate AV1 tile counts
CVE-2026-97576 7.8 HIGH media: v4l2-ctrls: validate HEVC tile counts
CVE-2026-97941 7.8 HIGH mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race
CVE-2026-98112 7.8 HIGH ksmbd: fix listener task lifetime on netdev events
CVE-2026-98116 7.8 HIGH ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF
CVE-2026-97580 7.8 HIGH media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
CVE-2026-97940 7.8 HIGH ipv6: fix fib6 walker UAF on seq stop

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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