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CVE-2025-39951— um: virtio_uml: Fix use-after-free after put_device in probe

AI Predicted 5.6 Difficulty: Moderate EPSS 0.02% · P4

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinux04e5b1fb01834a602acaae2276b67a783a8c6159< 14c231959a16ca41bfdcaede72483362a8c645d7affected
04e5b1fb01834a602acaae2276b67a783a8c6159< 5e94e44c9cb30d7a383d8ac227f24a8c9326b770affected
04e5b1fb01834a602acaae2276b67a783a8c6159< aaf900a83508c8cd5cdf765e7749f9076196ec7faffected
04e5b1fb01834a602acaae2276b67a783a8c6159< 4f364023ddcfe83f7073b973a9cb98584b7f2a46affected
04e5b1fb01834a602acaae2276b67a783a8c6159< 00e98b5a69034b251bb36dc6e7123d7648e218e4affected
04e5b1fb01834a602acaae2276b67a783a8c6159< c2ff91255e0157b356cff115d8dc3eeb5162edf2affected
04e5b1fb01834a602acaae2276b67a783a8c6159< 7ebf70cf181651fe3f2e44e95e7e5073d594c9c0affected
5.5affected
… +8 more rows
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I. Basic Information for CVE-2025-39951

Vulnerability Information
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Vulnerability Title
um: virtio_uml: Fix use-after-free after put_device in probe
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: um: virtio_uml: Fix use-after-free after put_device in probe When register_virtio_device() fails in virtio_uml_probe(), the code sets vu_dev->registered = 1 even though the device was not successfully registered. This can lead to use-after-free or other issues.
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，该漏洞源于设备注册失败后设置错误标志，可能导致释放后重用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 04e5b1fb01834a602acaae2276b67a783a8c6159 ~ 14c231959a16ca41bfdcaede72483362a8c645d7 -
LinuxLinux 5.5 -

II. Public POCs for CVE-2025-39951

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III. Intelligence Information for CVE-2025-39951

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Patches & Fixes for CVE-2025-39951 (7)

Same Patch Batch · Linux · 2025-10-04 · 144 CVEs total

CVE-2025-399469.8 CRITICALtls: make sure to abort the stream if headers are bogus
CVE-2022-50491coresight: cti: Fix hang in cti_disable_hw()
CVE-2023-53581net/mlx5e: Check for NOT_READY flag state after locking
CVE-2023-53580USB: Gadget: core: Help prevent panic during UVC unconfigure
CVE-2022-50507fs/ntfs3: Validate data run offset
CVE-2022-50508wifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power
CVE-2022-50506drbd: only clone bio if we have a backing device
CVE-2022-50504powerpc/rtas: avoid scheduling in rtas_os_term()
CVE-2022-50505iommu/amd: Fix pci device refcount leak in ppr_notifier()
CVE-2022-50503mtd: lpddr2_nvm: Fix possible null-ptr-deref
CVE-2022-50501media: coda: Add check for dcoda_iram_alloc
CVE-2022-50500netdevsim: fix memory leak in nsim_drv_probe() when nsim_dev_resources_register() failed
CVE-2022-50499media: dvb-core: Fix double free in dvb_register_device()
CVE-2022-50497binfmt_misc: fix shift-out-of-bounds in check_special_flags
CVE-2022-50498eth: alx: take rtnl_lock on resume
CVE-2022-50496dm cache: Fix UAF in destroy()
CVE-2022-50494thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
CVE-2022-50493scsi: qla2xxx: Fix crash when I/O abort times out
CVE-2022-50492drm/msm: fix use-after-free on probe deferral
CVE-2023-53572clk: imx: scu: use _safe list iterator to avoid a use after free

Showing top 20 of 144 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39951

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