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CVE-2025-22094— powerpc/perf: Fix ref-counting on the PMU 'vpa_pmu'

EPSS 0.07% · P22
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I. Basic Information for CVE-2025-22094

Vulnerability Information
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Vulnerability Title
powerpc/perf: Fix ref-counting on the PMU 'vpa_pmu'
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/perf: Fix ref-counting on the PMU 'vpa_pmu' Commit 176cda0619b6 ("powerpc/perf: Add perf interface to expose vpa counters") introduced 'vpa_pmu' to expose Book3s-HV nested APIv2 provided L1<->L2 context switch latency counters to L1 user-space via perf-events. However the newly introduced PMU named 'vpa_pmu' doesn't assign ownership of the PMU to the module 'vpa_pmu'. Consequently the module 'vpa_pmu' can be unloaded while one of the perf-events are still active, which can lead to kernel oops and panic of the form below on a Pseries-LPAR: BUG: Kernel NULL pointer dereference on read at 0x00000058 <snip> NIP [c000000000506cb8] event_sched_out+0x40/0x258 LR [c00000000050e8a4] __perf_remove_from_context+0x7c/0x2b0 Call Trace: [c00000025fc3fc30] [c00000025f8457a8] 0xc00000025f8457a8 (unreliable) [c00000025fc3fc80] [fffffffffffffee0] 0xfffffffffffffee0 [c00000025fc3fcd0] [c000000000501e70] event_function+0xa8/0x120 <snip> Kernel panic - not syncing: Aiee, killing interrupt handler! Fix this by adding the module ownership to 'vpa_pmu' so that the module 'vpa_pmu' is ref-counted and prevented from being unloaded when perf-events are initialized.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于powerpc perf中vpa_pmu引用计数错误，可能导致模块卸载时崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 176cda0619b6c17a553625f6e2fcbc3981ad667d ~ 70ea7c5189197c6f5acdcfd8a2651be2c41e2faa -
LinuxLinux 6.13 -

II. Public POCs for CVE-2025-22094

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III. Intelligence Information for CVE-2025-22094

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Same Patch Batch · Linux · 2025-04-16 · 127 CVEs total

CVE-2025-220408.8 HIGHksmbd: fix session use-after-free in multichannel connection
CVE-2025-220418.8 HIGHksmbd: fix use-after-free in ksmbd_sessions_deregister()
CVE-2025-22092PCI: Fix NULL dereference in SR-IOV VF creation error path
CVE-2025-22107net: dsa: sja1105: fix kasan out-of-bounds warning in sja1105_table_delete_entry()
CVE-2025-22106vmxnet3: unregister xdp rxq info in the reset path
CVE-2025-22105bonding: check xdp prog when set bond mode
CVE-2025-22104ibmvnic: Use kernel helpers for hex dumps
CVE-2025-22103net: fix NULL pointer dereference in l3mdev_l3_rcv
CVE-2025-22102Bluetooth: btnxpuart: Fix kernel panic during FW release
CVE-2025-22100drm/panthor: Fix race condition when gathering fdinfo group samples
CVE-2025-22101net: libwx: fix Tx L4 checksum
CVE-2025-22099drm: xlnx: zynqmp_dpsub: Add NULL check in zynqmp_audio_init
CVE-2025-22097drm/vkms: Fix use after free and double free on init error
CVE-2025-22098drm: zynqmp_dp: Fix a deadlock in zynqmp_dp_ignore_hpd_set()
CVE-2025-22096drm/msm/gem: Fix error code msm_parse_deps()
CVE-2025-22095PCI: brcmstb: Fix error path after a call to regulator_bulk_get()
CVE-2025-22093drm/amd/display: avoid NPD when ASIC does not support DMUB
CVE-2025-22082iio: backend: make sure to NULL terminate stack buffer
CVE-2025-22081fs/ntfs3: Fix a couple integer overflows on 32bit systems
CVE-2025-22080fs/ntfs3: Prevent integer overflow in hdr_first_de()

Showing top 20 of 127 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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