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CVE-2026-97948— powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver

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，已解决以下漏洞： powerpc/eeh：修复没有 EEH 敏感驱动程序的设备的递归锁问题 提交 1010b4c012b0（“powerpc/eeh：使 EEH 驱动程序设备热插拔安全”）重构了 EEH 代码，使得在 函数开始时持有 锁，并且在该锁仍被持有的情况下调用 。看起来该提交遗漏了移除 中现有的锁/解锁操作，而这些操作已不再必要。这导致 在代码路径被执行时，在自己实际已持有的锁上发生挂起。 该问题出现在以下情况：错误直接在 PHB（PCI 主机桥）上被检测到，和/或 当驱动程序的 返

AI Predicted 3.3 Difficulty: Hard EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 27

VendorProduct Version RangeStatus
Linux Linux 502f08831a9afb72dc98a56ae6504da43e93b250< 3833dfae0680b6b16e2469fbc90aa48376311cd8 affected
f56e004b781719d8fdf6c9619b15caf2579bc1f2< 24524fca27da674668941440e8e05cdfec0b0222 affected
59c6d3d81d42bf543c90597b4f38c53d6874c5a1< a58531181363219fa5de2b53d5d7274dcdfca98b affected
a426e8a6ae161f51888585b065db0f8f93ab2e16< 460fab22b65138531082910702f74b048b25237b affected
d2c60a8a387e9fcc28447ef36c03f8e49fd052a6< 102e3dc5ab5ba052e294819e83384166b242c1ec affected
1010b4c012b0d78dfb9d3132b49aa2ef024a07a7< 2920af33d097ca335e492b346af70b72986ad6dc affected
1010b4c012b0d78dfb9d3132b49aa2ef024a07a7< 85d8eaefc052cf3e5ae2c7bafeda2db68b8898b4 affected
1010b4c012b0d78dfb9d3132b49aa2ef024a07a7< c5e68706527968282e49de205cc2b935823cb88a affected
… +19 more rows
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I. Basic Information for CVE-2026-97948

Vulnerability Information
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Vulnerability Title
powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/eeh: Fix recursive locking on devices without EEH sensitive driver The commit 1010b4c012b0 ("powerpc/eeh: Make EEH driver device hotplug safe") refactored the EEH code such that the pci_rescan_remove_lock is held at the beginning of eeh_handle_normal_event() and the eeh_reset_device() is called with that lock being held. Looks like the commit missed to remove the existing lock/unlock inside eeh_rmv_device() which is no longer necessary. This is causing the eehd to hang on the lock which it actually holds when that code path is taken. [<0>] 0xc00000011c78f870 [<0>] __switch_to+0xfc/0x1a0 [<0>] pci_lock_rescan_remove+0x30/0x44 [<0>] eeh_rmv_device+0x290/0x2e0 [<0>] eeh_pe_dev_traverse+0x80/0x130 [<0>] eeh_reset_device+0xcc/0x23c [<0>] eeh_handle_normal_event+0x830/0xa80 [<0>] eeh_event_handler+0xf8/0x190 [<0>] kthread+0x194/0x1b0 [<0>] start_kernel_thread+0x14/0x18 The issue is seen for cases where the errors are detected on the PHB directly AND|OR for devices where the driver error_detected() returns PCI_ERS_RESULT_NEED_RESET, and driver being not EEH sensitive(i.e no error handlers like slot_reset(), resume() etc defined).
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 502f08831a9afb72dc98a56ae6504da43e93b250 ~ 3833dfae0680b6b16e2469fbc90aa48376311cd8 -
Linux Linux 6.17 -

II. Public POCs for CVE-2026-97948

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III. Intelligence Information for CVE-2026-97948

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Patches & Fixes for CVE-2026-97948 (8)

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-2026-98112 7.8 HIGH ksmbd: fix listener task lifetime on netdev events
CVE-2026-98002 7.8 HIGH iommu/amd: Fix ineffective error check in nested domain allocation
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 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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