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CVE-2026-99034— mmc: sdhci-sprd: disable runtime PM on remove

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： mmc: sdhci-sprd：在移除时禁用运行时电源管理（runtime PM） 启用了运行时电源管理，但 并未执行相应的运行时电源管理清理工作。 在探测失败路径中，会在禁用时钟之前先禁用运行时电源管理；然而，在正常的移除路径中，会直接禁用那些同样由运行时电源管理回调函数管理的时钟。如果设备处于运行时挂起（runtime suspended）状态，这些时钟可能已经被禁用。 修复方案为：在移除设备之前先恢复设备（resume），然后禁用运行时电源管理，并在禁用时钟之前释

AI Predicted 5.5 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1551

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux fb8bd90f83c4dd86bc7fdae406152d63c5852f92< 605a59639abb9cb63cd7676460461fb0b34756b3 affected
fb8bd90f83c4dd86bc7fdae406152d63c5852f92< 03244b8713d044425db5dbee08037ecd79b684f9 affected
fb8bd90f83c4dd86bc7fdae406152d63c5852f92< 3a1caa886d41d9bcc9a402906336eda34a90d323 affected
fb8bd90f83c4dd86bc7fdae406152d63c5852f92< dbad91a31c482063c0a87c90aa83c9001972c6ac affected
fb8bd90f83c4dd86bc7fdae406152d63c5852f92< e1c6c10a6a70a69e29b04fcc1ebe4b9bcbc7a49a affected
4.20 affected
< 4.20 unaffected
6.6.160≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-99034

Vulnerability Information
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Vulnerability Title
mmc: sdhci-sprd: disable runtime PM on remove
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mmc: sdhci-sprd: disable runtime PM on remove sdhci_sprd_probe() enables runtime PM, while sdhci_sprd_remove() does not perform the corresponding runtime PM cleanup. The probe failure path disables runtime PM before disabling the clocks, but the normal remove path directly disables clocks that are also managed by the runtime PM callbacks. If the device is runtime suspended, those clocks may already be disabled. Resume the device before removal, disable runtime PM and drop the temporary runtime PM reference before disabling the clocks. This issue was found by manual code inspection.
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 fb8bd90f83c4dd86bc7fdae406152d63c5852f92 ~ 605a59639abb9cb63cd7676460461fb0b34756b3 -
Linux Linux 4.20 -

II. Public POCs for CVE-2026-99034

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III. Intelligence Information for CVE-2026-99034

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Patches & Fixes for CVE-2026-99034 (5)

Same Patch Batch · Linux · 2026-10-23 · 217 CVEs total

CVE-2026-98959 9.8 CRITICAL btrfs: fix xattr replace when multiple xattrs are packed in the same item
CVE-2026-99078 9.8 CRITICAL net/mlx5e: Prevent stale XSK buffer release on MPWQE refill retry
CVE-2026-99079 9.8 CRITICAL net/mlx5e: Prevent stale XSK buffer release on refill retry
CVE-2026-98988 8.8 HIGH namespace: keep covered mounts covered in OPEN_TREE_NAMESPACE
CVE-2026-99083 8.8 HIGH ksmbd: fix heap out-of-bounds write in krb5_authenticate()
CVE-2026-99082 8.8 HIGH KVM: x86: Use active memslots for the per-vCPU MMIO cache
CVE-2026-98981 8.8 HIGH namespace: unhash a dentry before detaching the mounts on it
CVE-2026-98980 8.8 HIGH namei: don't reveal overmounted entries in refwalk
CVE-2026-98870 8.8 HIGH ksmbd: remove stale channels from all sessions on teardown
CVE-2026-98978 8.4 HIGH namespace: never expire a locked mount
CVE-2026-99042 8.4 HIGH io_uring/net: populate CONNECT filter fields for 24-byte sockaddr_in6
CVE-2026-98968 8.1 HIGH amt: send the relay's General Query directly from the receive path
CVE-2026-99064 8.1 HIGH cipso: adjust cached option offsets when removing CIPSO
CVE-2026-99014 7.8 HIGH Bluetooth: hci_sync: Fix command skb lifetime during scan setup
CVE-2026-98999 7.8 HIGH drm/xe: Fix stale pinned_link entry when fb-pin performs the final unpin
CVE-2026-99016 7.8 HIGH riscv: futex: untag the user pointer before the atomic access
CVE-2026-99018 7.8 HIGH riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp
CVE-2026-99051 7.8 HIGH fsverity: RCU-delay the freeing of struct fsverity_info
CVE-2026-99054 7.8 HIGH tipc: destroy topsrv workqueues before closing connections
CVE-2026-99053 7.8 HIGH tipc: hold a reference to nodes found by link name

Showing top 20 of 217 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux