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CVE-2026-74730— NFS: Pin the 'struct nfs_server' during a FREE_STATEID call

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基金会开源的一个操作系统内核。 Linux kernel 3.10版本存在安全漏洞，该漏洞源于FREE_STATEID操作延迟时未固定struct nfs_server对象，可能导致释放后重用。

CVSS 9.8 · Critical EPSS 0.51% · P42

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009< ed2f92ce2fc48463c41e0e540b9a3454889e8af8 affected
7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009< d858ab09e787106432d4d9830bad9dfedf02f890 affected
7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009< af62f1af182d33a0de38308c012841885d8ab92e affected
7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009< caee6a68ffaa5016dfc01cd0b3dc1896a32e3abd affected
7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009< ed1161ab6239761958b38d5667225634fc2be894 affected
7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009< d71dfffa512e71b166a889484e4c3b148a9a3af2 affected
7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009< 80ed3d762628b36c9e4b22fac7c65b72ef3b13dd affected
7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009< cf616096a0f3a2b60f7d68b6b39674a6867ded9c affected
… +10 more rows
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I. Basic Information for CVE-2026-74730

Vulnerability Information
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Vulnerability Title
NFS: Pin the 'struct nfs_server' during a FREE_STATEID call
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: NFS: Pin the 'struct nfs_server' during a FREE_STATEID call Dan Aloni reports that he was able to hit a use-after-free bug if a FREE_STATEID operation gets delayed for whatever reason. Fix this by bumping the refcount of the 'struct nfs_server' object for the duration of the FREE_STATEID so it doesn't get cleaned up from underneath us while operations are still in flight.
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基金会开源的一个操作系统内核。 Linux kernel 3.10版本存在安全漏洞，该漏洞源于FREE_STATEID操作延迟时未固定struct nfs_server对象，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 7c1d5fae4a87d3cf3e9ffd68bcdbaf6529013009 ~ ed2f92ce2fc48463c41e0e540b9a3454889e8af8 -
Linux Linux 3.10 -

II. Public POCs for CVE-2026-74730

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III. Intelligence Information for CVE-2026-74730

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Patches & Fixes for CVE-2026-74730 (8)

Same Patch Batch · Linux · 2026-08-22 · 149 CVEs total

CVE-2026-74705 10.0 CRITICAL udp: fix potential use-after-free in tunnel segmentation
CVE-2026-74612 10.0 CRITICAL veth: fix skb length accounting after XDP frag adjustment
CVE-2026-74616 9.8 CRITICAL xdp: reject clones that overrun skb_shared_info tailroom
CVE-2026-74608 9.8 CRITICAL smb: client: Fix use-after-free in cifs_try_adding_channels()
CVE-2026-74669 9.8 CRITICAL ipvs: clear IPv4 options after rebasing tunnel ICMP errors
CVE-2026-74611 9.8 CRITICAL tls: rx: restore msg_iter before TLS 1.3 optimistic retry
CVE-2026-74727 9.8 CRITICAL ovpn: skip rehash for peers already removed from by_id
CVE-2026-74597 9.8 CRITICAL ip6_tunnel: clear skb2->cb[] in ip6ip6_err()
CVE-2026-74617 9.8 CRITICAL dibs: initialise dibs->lock in dibs_dev_alloc()
CVE-2026-74588 9.8 CRITICAL sctp: keep chunk->transport in step with the list it is queued on
CVE-2026-74628 9.8 CRITICAL net/x25: fix use-after-free of the socket by its timers
CVE-2026-74586 9.8 CRITICAL sctp: clear new_transport when removing a peer
CVE-2026-74587 9.8 CRITICAL sctp: fix use-after-free of cached ASCONF chunk
CVE-2026-74662 9.8 CRITICAL inet: frags: publish queues before arming timer
CVE-2026-74688 9.8 CRITICAL sctp: clear control chunk transport if it is being removed
CVE-2026-74591 9.8 CRITICAL mm/filemap: __filemap_add_folio() restore index before retrying
CVE-2026-74723 9.8 CRITICAL btrfs: lzo: reject inline extents without valid headers
CVE-2026-74712 9.3 CRITICAL vdpa/mlx5: Fix buffer length in create_direct_keys()
CVE-2026-74665 9.1 CRITICAL net: fix skb length accounting after generic XDP frag adjustment
CVE-2026-74615 8.8 HIGH vxlan: do not arm the ageing timer on a device that is down

Showing top 20 of 149 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74730

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