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CVE-2025-38724— nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()

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nfsd未正确处理get_client_locked返回值，可能导致释放后重用。

CVSS 9.8 · Critical EPSS 0.39% · P32

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux d20c11d86d8f821a64eac7d6c8f296f06d935f4f< 3f252a73e81aa01660cb426735eab932e6182e8d affected
d20c11d86d8f821a64eac7d6c8f296f06d935f4f< d35ac850410966010e92f401f4e21868a9ea4d8b affected
d20c11d86d8f821a64eac7d6c8f296f06d935f4f< f3aac6cf390d8b80e1d82975faf4ac61175519c0 affected
d20c11d86d8f821a64eac7d6c8f296f06d935f4f< 22f45cedf281e6171817c8a3432c44d788c550e1 affected
d20c11d86d8f821a64eac7d6c8f296f06d935f4f< d71abd1ae4e0413707cd42b10c24a11d1aa71772 affected
d20c11d86d8f821a64eac7d6c8f296f06d935f4f< 74ad36ed60df561a303a19ecef400c7096b20306 affected
d20c11d86d8f821a64eac7d6c8f296f06d935f4f< 36e83eda90e0e4ac52f259f775b40b2841f8a0a3 affected
d20c11d86d8f821a64eac7d6c8f296f06d935f4f< 571a5e46c71490285d2d8c06f6b5a7cbf6c7edd1 affected
… +12 more rows
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I. Basic Information for CVE-2025-38724

Vulnerability Information
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Vulnerability Title
nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() Lei Lu recently reported that nfsd4_setclientid_confirm() did not check the return value from get_client_locked(). a SETCLIENTID_CONFIRM could race with a confirmed client expiring and fail to get a reference. That could later lead to a UAF. Fix this by getting a reference early in the case where there is an extant confirmed client. If that fails then treat it as if there were no confirmed client found at all. In the case where the unconfirmed client is expiring, just fail and return the result from get_client_locked().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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nfsd未正确处理get_client_locked返回值，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

Vendor Product Affected Versions CPE Subscribe
Linux Linux d20c11d86d8f821a64eac7d6c8f296f06d935f4f ~ 3f252a73e81aa01660cb426735eab932e6182e8d -
Linux Linux 3.17 -

II. Public POCs for CVE-2025-38724

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III. Intelligence Information for CVE-2025-38724

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Patches & Fixes for CVE-2025-38724 (1)

Same Patch Batch · Linux · 2025-09-04 · 52 CVEs total

CVE-2025-38708 9.8 CRITICAL drbd: add missing kref_get in handle_write_conflicts
CVE-2025-38728 9.1 CRITICAL smb3: fix for slab out of bounds on mount to ksmbd
CVE-2025-38688 8.8 HIGH iommufd: Prevent ALIGN() overflow
CVE-2025-38697 7.8 HIGH jfs: upper bound check of tree index in dbAllocAG
CVE-2025-38715 7.8 HIGH hfs: fix slab-out-of-bounds in hfs_bnode_read()
CVE-2025-38717 7.8 HIGH net: kcm: Fix race condition in kcm_unattach()
CVE-2025-38718 7.8 HIGH sctp: linearize cloned gso packets in sctp_rcv
CVE-2025-38714 7.8 HIGH hfsplus: fix slab-out-of-bounds in hfsplus_bnode_read()
CVE-2025-38685 7.8 HIGH fbdev: Fix vmalloc out-of-bounds write in fast_imageblit
CVE-2025-38722 7.8 HIGH habanalabs: fix UAF in export_dmabuf()
CVE-2025-38710 7.8 HIGH gfs2: Validate i_depth for exhash directories
CVE-2025-38730 7.8 HIGH io_uring/net: commit partial buffers on retry
CVE-2025-38703 7.8 HIGH drm/xe: Make dma-fences compliant with the safe access rules
CVE-2025-38679 7.3 HIGH media: venus: Fix OOB read due to missing payload bound check
CVE-2025-38687 7.3 HIGH comedi: fix race between polling and detaching
CVE-2025-38713 7.1 HIGH hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc()
CVE-2025-38707 7.1 HIGH fs/ntfs3: Add sanity check for file name
CVE-2025-38680 media: uvcvideo: Fix 1-byte out-of-bounds read in uvc_parse_format()
CVE-2025-38693 media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_t
CVE-2025-38681 mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd()

Showing top 20 of 52 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38724

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