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CVE-2026-46292— pmdomain: core: Fix detach procedure for virtual devices in genpd

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.

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genpd中虚拟设备分离过程，可能导致空指针取消引用。

AI Predicted 5.5 Difficulty: Hard EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 3c095f32a92be4d07f3172a777dab1aacdb6a728< e8f8dad44f024a5c99e54a48ad5c943fa8e54319 affected
3c095f32a92be4d07f3172a777dab1aacdb6a728< 98b8104978474d381256a2b2fb0e7ca8e05a7bfa affected
3c095f32a92be4d07f3172a777dab1aacdb6a728< 52e485ed0dcb5496864003ba9ffcef7d5b613f83 affected
3c095f32a92be4d07f3172a777dab1aacdb6a728< 707cb5df3eab32ddc52979418f7ace62941e6381 affected
3c095f32a92be4d07f3172a777dab1aacdb6a728< 361518a26e4434e879db6ff43bf364795dcbfbff affected
3c095f32a92be4d07f3172a777dab1aacdb6a728< 51a7dd9cbae9210335ce398642ecaaa52c939eb5 affected
3c095f32a92be4d07f3172a777dab1aacdb6a728< 8d44391a7f29e4601e8243f13498d0219bab2576 affected
3c095f32a92be4d07f3172a777dab1aacdb6a728< 26735dfdd8930d9ef1fa92e590a9bf77726efdf6 affected
… +10 more rows
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I. Basic Information for CVE-2026-46292

Vulnerability Information
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Vulnerability Title
pmdomain: core: Fix detach procedure for virtual devices in genpd
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: pmdomain: core: Fix detach procedure for virtual devices in genpd If a device is attached to a PM domain through genpd_dev_pm_attach_by_id(), genpd calls pm_runtime_enable() for the corresponding virtual device that it registers. While this avoids boilerplate code in drivers, there is no corresponding call to pm_runtime_disable() in genpd_dev_pm_detach(). This means these virtual devices are typically detached from its genpd, while runtime PM remains enabled for them, which is not how things are designed to work. In worst cases it may lead to critical errors, like a NULL pointer dereference bug in genpd_runtime_suspend(), which was recently reported. For another case, we may end up keeping an unnecessary vote for a performance state for the device. To fix these problems, let's add this missing call to pm_runtime_disable() in genpd_dev_pm_detach().
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
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genpd中虚拟设备分离过程，可能导致空指针取消引用。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 3c095f32a92be4d07f3172a777dab1aacdb6a728 ~ e8f8dad44f024a5c99e54a48ad5c943fa8e54319 -
Linux Linux 4.18 -

II. Public POCs for CVE-2026-46292

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III. Intelligence Information for CVE-2026-46292

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Patches & Fixes for CVE-2026-46292 (8)

Same Patch Batch · Linux · 2026-06-08 · 41 CVEs total

CVE-2026-46289 9.8 CRITICAL lib/scatterlist: fix length calculations in extract_kvec_to_sg
CVE-2026-46288 8.4 HIGH of: unittest: fix use-after-free in of_unittest_changeset()
CVE-2026-46307 8.3 HIGH wifi: ath5k: do not access array OOB
CVE-2026-46303 8.2 HIGH isofs: validate Rock Ridge CE continuation extent against volume size
CVE-2026-46274 7.8 HIGH io-wq: check that the predecessor is hashed in io_wq_remove_pending()
CVE-2026-46275 7.8 HIGH Bluetooth: hci_uart: fix UAFs and race conditions in close and init paths
CVE-2026-46277 7.8 HIGH mm/zone_device: do not touch device folio after calling ->folio_free()
CVE-2026-46280 7.8 HIGH lib: test_hmm: evict device pages on file close to avoid use-after-free
CVE-2026-46311 7.8 HIGH drm/amdgpu/userq: fix access to stale wptr mapping
CVE-2026-46304 7.5 HIGH nvmet: avoid recursive nvmet-wq flush in nvmet_ctrl_free
CVE-2026-46306 7.5 HIGH flow_dissector: do not dissect PPPoE PFC frames
CVE-2026-46299 7.0 HIGH hfsplus: fix held lock freed on hfsplus_fill_super()
CVE-2026-46298 pseries/papr-hvpipe: Fix race with interrupt handler
CVE-2026-46314 drm/v3d: Reject empty multisync extension to prevent infinite loop
CVE-2026-46301 spi: topcliff-pch: fix use-after-free on unbind
CVE-2026-46302 selinux: allow multiple opens of /sys/fs/selinux/policy
CVE-2026-46305 staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc
CVE-2026-46308 pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()
CVE-2026-46309 drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise
CVE-2026-46310 media: renesas: vsp1: Fix NULL pointer deref on module unload

Showing top 20 of 41 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46292

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