Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2025-39688— nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()

EPSS 0.07% · P20
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2025-39688

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() The pynfs DELEG8 test fails when run against nfsd. It acquires a delegation and then lets the lease time out. It then tries to use the deleg stateid and expects to see NFS4ERR_DELEG_REVOKED, but it gets bad NFS4ERR_BAD_STATEID instead. When a delegation is revoked, it's initially marked with SC_STATUS_REVOKED, or SC_STATUS_ADMIN_REVOKED and later, it's marked with the SC_STATUS_FREEABLE flag, which denotes that it is waiting for s FREE_STATEID call. nfs4_lookup_stateid() accepts a statusmask that includes the status flags that a found stateid is allowed to have. Currently, that mask never includes SC_STATUS_FREEABLE, which means that revoked delegations are (almost) never found. Add SC_STATUS_FREEABLE to the always-allowed status flags, and remove it from nfsd4_delegreturn() since it's now always implied.
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，该漏洞源于未允许SC_STATUS_FREEABLE状态，可能导致错误状态ID。
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 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a ~ 52e209203c35a4fbff8af23cd3613efe5df40102 -
LinuxLinux 6.12 -

II. Public POCs for CVE-2025-39688

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-39688

请登录查看更多情报信息。

Same Patch Batch · Linux · 2025-04-18 · 23 CVEs total

CVE-2025-38637net_sched: skbprio: Remove overly strict queue assertions
CVE-2025-37785ext4: fix OOB read when checking dotdot dir
CVE-2025-37860sfc: fix NULL dereferences in ef100_process_design_param()
CVE-2025-37925jfs: reject on-disk inodes of an unsupported type
CVE-2025-37893LoongArch: BPF: Fix off-by-one error in build_prologue()
CVE-2025-38049x86/resctrl: Fix allocation of cleanest CLOSID on platforms with no monitors
CVE-2025-38104drm/amdgpu: Replace Mutex with Spinlock for RLCG register access to avoid Priority Inversi
CVE-2025-38152remoteproc: core: Clear table_sz when rproc_shutdown
CVE-2025-38240drm/mediatek: dp: drm_err => dev_err in HPD path to avoid NULL ptr
CVE-2025-38479dmaengine: fsl-edma: free irq correctly in remove path
CVE-2025-38575ksmbd: use aead_request_free to match aead_request_alloc
CVE-2025-37838HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Con
CVE-2025-39735jfs: fix slab-out-of-bounds read in ea_get()
CVE-2025-39728clk: samsung: Fix UBSAN panic in samsung_clk_init()
CVE-2025-39755staging: gpib: Fix cb7210 pcmcia Oops
CVE-2025-39778objtool, nvmet: Fix out-of-bounds stack access in nvmet_ctrl_state_show()
CVE-2025-39930ASoC: simple-card-utils: Don't use __free(device_node) at graph_util_parse_dai()
CVE-2025-39989x86/mce: use is_copy_from_user() to determine copy-from-user context
CVE-2025-40014objtool, spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq()
CVE-2025-40114iio: light: Add check for array bounds in veml6075_read_int_time_ms

Showing top 20 of 23 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39688

No comments yet

Leave a comment