CVE-2026-97969— watchdog: msc313e: Fix clock leak and spurious timer in settimeout()
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： watchdog: msc313e: 修复 settimeout() 中的时钟泄漏和误触发定时器问题 msc313e_wdt_settimeout() 无条件地调用 msc313e_wdt_start()，这引入了两个严重缺陷： 1. 如果看门狗已经处于活动状态，再次调用 start() 会导致时钟引用计数被重复递增。然而，stop() 仅被调用一次，导致引用计数不平衡。 2. 如果看门狗已停止，调用 settimeout() 会意外启动硬件定时器。 将寄存器写入逻辑提取到
Affected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | e9800b7994642a794afd4894f072541c14277ce8< 68665016c7b777b44e27b6b0c1e6524c28ebe40a |
affected |
e9800b7994642a794afd4894f072541c14277ce8< 77ef2aa8b46876ca9935f32dd874c517ccf5d880 |
affected | ||
e9800b7994642a794afd4894f072541c14277ce8< a1dd0817776ea2a870ba2347001af13ddd4cb321 |
affected | ||
e9800b7994642a794afd4894f072541c14277ce8< 2152a13ee2a9af09a668ebd053a8dbf771dadb80 |
affected | ||
e9800b7994642a794afd4894f072541c14277ce8< 2abf99a57b0b71b2b97745981f4039370ab78044 |
affected | ||
e9800b7994642a794afd4894f072541c14277ce8< faf1eb2895c87a8c0fb920439dddc7e0d97c6a69 |
affected | ||
e9800b7994642a794afd4894f072541c14277ce8< 3db30f315935c2fb0d95f46b7a593b5b4d3ec3d0 |
affected | ||
5.14 |
affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2026-97969
Vulnerability Information
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Vulnerability Title
watchdog: msc313e: Fix clock leak and spurious timer in settimeout()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
watchdog: msc313e: Fix clock leak and spurious timer in settimeout()
msc313e_wdt_settimeout() unconditionally calls msc313e_wdt_start() which
introduces two severe bugs:
1. If the watchdog is already active, calling start() again will
increase the reference count of the clock again. However stop() is
only called once, the reference count is unbalance.
2. If the watchdog is stopped, calling settimeout() will start
the hardware timer accidentally.
Factor out the register-writing logic into a helper function. Only call
it in settimeout() if the watchdog is running. Otherwise, simply update
`wdev->timeout`.
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-2026-97969
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-97969 (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-2026-97941 | 7.8 HIGH | mm/slab: take n->list_lock in __slab_try_return_freelist() to avoid race |
| 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-2026-98002 | 7.8 HIGH | iommu/amd: Fix ineffective error check in nested domain allocation |
| CVE-2026-98112 | 7.8 HIGH | ksmbd: fix listener task lifetime on netdev events |
| CVE-2026-97937 | 7.8 HIGH | ftrace: fork: Initialize function graph state before copy_exec_state() |
| 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 → →
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Same vendor: Linux
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CVE-2026-98384
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CVE-2026-98383
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V. Comments for CVE-2026-97969
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