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CVE-2025-68779— net/mlx5e: Avoid unregistering PSP twice

EPSS 0.03% · P8
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I. Basic Information for CVE-2025-68779

Vulnerability Information
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Vulnerability Title
net/mlx5e: Avoid unregistering PSP twice
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Avoid unregistering PSP twice PSP is unregistered twice in: _mlx5e_remove -> mlx5e_psp_unregister mlx5e_nic_cleanup -> mlx5e_psp_unregister This leads to a refcount underflow in some conditions: ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 2 PID: 1694 at lib/refcount.c:28 refcount_warn_saturate+0xd8/0xe0 [...] mlx5e_psp_unregister+0x26/0x50 [mlx5_core] mlx5e_nic_cleanup+0x26/0x90 [mlx5_core] mlx5e_remove+0xe6/0x1f0 [mlx5_core] auxiliary_bus_remove+0x18/0x30 device_release_driver_internal+0x194/0x1f0 bus_remove_device+0xc6/0x130 device_del+0x159/0x3c0 mlx5_rescan_drivers_locked+0xbc/0x2a0 [mlx5_core] [...] Do not directly remove psp from the _mlx5e_remove path, the PSP cleanup happens as part of profile cleanup.
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mlx5e驱动中重复注销PSP，可能导致引用计数下溢。
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 89ee2d92f66c45625ff1c173df2dbdea32568c5d ~ e12c912f92ccea671b514caf371f28485714bb4b -
LinuxLinux 6.18 -

II. Public POCs for CVE-2025-68779

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III. Intelligence Information for CVE-2025-68779

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Same Patch Batch · Linux · 2026-01-13 · 93 CVEs total

CVE-2025-710897.8 HIGHiommu: disable SVA when CONFIG_X86 is set
CVE-2025-71069f2fs: invalidate dentry cache on failed whiteout creation
CVE-2025-71068svcrdma: bound check rq_pages index in inline path
CVE-2025-71065f2fs: fix to avoid potential deadlock
CVE-2025-68821fuse: fix readahead reclaim deadlock
CVE-2025-68820ext4: xattr: fix null pointer deref in ext4_raw_inode()
CVE-2025-68819media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()
CVE-2025-68818scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path"
CVE-2025-68817ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
CVE-2025-68823ublk: fix deadlock when reading partition table
CVE-2025-71067ntfs: set dummy blocksize to read boot_block when mounting
CVE-2025-71071iommu/mediatek: fix use-after-free on probe deferral
CVE-2025-71070ublk: clean up user copy references on ublk server exit
CVE-2025-71072shmem: fix recovery on rename failures
CVE-2025-71073Input: lkkbd - disable pending work before freeing device
CVE-2025-71074functionfs: fix the open/removal races
CVE-2025-71075scsi: aic94xx: fix use-after-free in device removal path
CVE-2025-71077tpm: Cap the number of PCR banks
CVE-2025-71076drm/xe/oa: Limit num_syncs to prevent oversized allocations
CVE-2025-71078powerpc/64s/slb: Fix SLB multihit issue during SLB preload

Showing top 20 of 93 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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