NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()
In the Linux kernel, the following vulnerability has been resolved: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() The function needs to check the minimal filehandle length before it can access the embedded filehandle.
- Published
- Sep 7, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 9th percentile
- CWE
- —
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux11.0
- linux linux kernel5.5 and later · before 5.10.241
- linux linux kernel5.11 and later · before 5.15.190
- linux linux kernel5.16 and later · before 6.1.148
- linux linux kernel4.13 and later · before 5.4.297
- linux linux kernel6.7 and later · before 6.12.42
- linux linux kernel6.13 and later · before 6.15.10
- linux linux kernel6.16 and later · before 6.16.1
- linux linux kernel6.2 and later · before 6.6.102
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 4.13affected
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before 7f8eca87fef7519e9c41f3258f25ebc2752247eeaffected · git
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before cb09afa0948d96b1e385d609ed044bb1aa043536affected · git
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before 3570ef5c31314c13274c935a20b91768ab5bf412affected · git
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before 763810bb883cb4de412a72f338d80947d97df67baffected · git
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before 12ad3def2e5e0b120e3d0cb6ce8b7b796819ad40affected · git
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before 2ad40b7992aa26bc631afc1a995b0e3ddc30de3faffected · git
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before b7f7866932466332a2528fda099000b035303485affected · git
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before 7dd36f7477d1e03a1fcf8d13531ca326c4fb599faffected · git
- 20fa19027286983ab2734b5910c4a687436e0c31 and later · before ef93a685e01a281b5e2a25ce4e3428cf9371a205affected · git
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:10 | kernel-abi-stablelists | before 6.12.0-124.13.1.el10_1 | 6.12.0-124.13.1.el10_1 |
| AlmaLinux:10 | kernel-doc | before 6.12.0-124.13.1.el10_1 | 6.12.0-124.13.1.el10_1 |
| AlmaLinux:8 | bpftool | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-abi-stablelists | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-core | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-cross-headers | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-debug | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-debug-core | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-debug-devel | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules-extra | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-devel | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-doc | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-headers | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-modules | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-modules-extra | before 4.18.0-553.78.1.el8_10 | 4.18.0-553.78.1.el8_10 |
| AlmaLinux:8 | kernel-rt | before 4.18.0-553.78.1.rt7.419.el8_10 | 4.18.0-553.78.1.rt7.419.el8_10 |
| AlmaLinux:8 | kernel-rt-core | before 4.18.0-553.78.1.rt7.419.el8_10 | 4.18.0-553.78.1.rt7.419.el8_10 |
| AlmaLinux:8 | kernel-rt-debug | before 4.18.0-553.78.1.rt7.419.el8_10 | 4.18.0-553.78.1.rt7.419.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-core | before 4.18.0-553.78.1.rt7.419.el8_10 | 4.18.0-553.78.1.rt7.419.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-devel | before 4.18.0-553.78.1.rt7.419.el8_10 | 4.18.0-553.78.1.rt7.419.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-modules | before 4.18.0-553.78.1.rt7.419.el8_10 | 4.18.0-553.78.1.rt7.419.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | before 4.18.0-553.78.1.rt7.419.el8_10 | 4.18.0-553.78.1.rt7.419.el8_10 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 12ad3def2e5e0b120e3d0cb6ce8b7b796819ad40 | Vendor (CNA) |
| Linux Linux | 2ad40b7992aa26bc631afc1a995b0e3ddc30de3f | Vendor (CNA) |
| Linux Linux | 3570ef5c31314c13274c935a20b91768ab5bf412 | Vendor (CNA) |
| Linux Linux | 763810bb883cb4de412a72f338d80947d97df67b | Vendor (CNA) |
| Linux Linux | 7dd36f7477d1e03a1fcf8d13531ca326c4fb599f | Vendor (CNA) |
| Linux Linux | 7f8eca87fef7519e9c41f3258f25ebc2752247ee | Vendor (CNA) |
| Linux Linux | b7f7866932466332a2528fda099000b035303485 | Vendor (CNA) |
| Linux Linux | cb09afa0948d96b1e385d609ed044bb1aa043536 | Vendor (CNA) |
| Linux Linux | ef93a685e01a281b5e2a25ce4e3428cf9371a205 | Vendor (CNA) |
| almalinux:bpftool | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-abi-stablelists | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-core | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-cross-headers | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-core | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-devel | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-modules | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-debug-modules-extra | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-devel | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:kernel-doc | 4.18.0-553.78.1.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| debian:linux | 6.1.148-1 · Debian:12 | Package registry (OSV) |
| red hat:bpftool | 0:4.18.0-553.78.1.el8_10 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:bpftool-debuginfo | 0:4.18.0-553.78.1.el8_10 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:kernel | 0:4.18.0-553.78.1.el8_10 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:kernel-abi-stablelists | 0:4.18.0-553.78.1.el8_10 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:kernel-core | 0:4.18.0-553.78.1.el8_10 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:kernel-debug | 0:4.18.0-553.78.1.el8_10 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:kernel-debug-core | 0:4.18.0-553.78.1.el8_10 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:4.18.0-553.78.1.el8_10 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
+5
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/12ad3def2e5e0b120e3d0cb6ce8b7b796819ad40
- git.kernel.org/stable/c/2ad40b7992aa26bc631afc1a995b0e3ddc30de3f
- git.kernel.org/stable/c/3570ef5c31314c13274c935a20b91768ab5bf412
- git.kernel.org/stable/c/763810bb883cb4de412a72f338d80947d97df67b
- git.kernel.org/stable/c/7dd36f7477d1e03a1fcf8d13531ca326c4fb599f
- git.kernel.org/stable/c/7f8eca87fef7519e9c41f3258f25ebc2752247ee
- git.kernel.org/stable/c/b7f7866932466332a2528fda099000b035303485
- git.kernel.org/stable/c/cb09afa0948d96b1e385d609ed044bb1aa043536
- git.kernel.org/stable/c/ef93a685e01a281b5e2a25ce4e3428cf9371a205
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.