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NVD / CVE Program· CNA Linux

CVE-2025-68315: f2fs: fix to detect potential corrupted nid in free_nid_list

CriticalCVSS 9.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 39/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.43% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 6b9525596a83cd5b7bbc2c7bd5f9ad9cf5ad60fa, 88b2ddb0c4f1dc874d4598e78cc830c64315ed86, 8fc6056dcf79937c46c97fa4996cda65956437a9.

Low priority for now. Upgrade to Linux Linux 6b9525596a83cd5b7bbc2c7bd5f9ad9cf5ad60fa, 88b2ddb0c4f1dc874d4598e78cc830c64315ed86, 8fc6056dcf79937c46c97fa4996cda65956437a9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to detect potential corrupted nid in free_nid_list As reported, on-disk footer.ino and footer.nid is the same and out-of-range, let's add sanity check on f2fs_alloc_nid() to detect any potential corruption in free_nid_list.

Published
Dec 16, 2025
Updated
Oct 14, 2026
EPSS
0.4% · 37th percentile
CWE
—

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CNA vs NVD score

NVD
—
CNA · Linux
9.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-68315

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

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

    • 3.8affected
    • 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 and later · before 88b2ddb0c4f1dc874d4598e78cc830c64315ed86affected · git
    • 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 and later · before 9337ed5e777e1c19854928cba7a8131dd00e611baffected · git
    • 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 and later · before 6b9525596a83cd5b7bbc2c7bd5f9ad9cf5ad60faaffected · git
    • 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 and later · before adbcb34f03abb89e681a5907c4c3ce4bf224991daffected · git
    • 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 and later · before 8fc6056dcf79937c46c97fa4996cda65956437a9affected · git
    • before 3.8not affected · semver
    • 6.1.175 and later · up to and including 6.1.*not affected · semver
    • 6.6.140 and later · up to and including 6.6.*not affected · semver
    • 6.12.58 and later · up to and including 6.12.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.176-16.1.176-1
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.8-16.17.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-68313Dec 16, 2025 · x86/CPU/AMD: Add RDSEED fix for Zen5
    28Monitor
  • ← EarlierCVE-2025-68314Dec 16, 2025 · drm/msm: make sure last_fence is always updated
    35Monitor
  • Later →CVE-2025-68316Dec 16, 2025 · scsi: ufs: core: Fix invalid probe error return value
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux6b9525596a83cd5b7bbc2c7bd5f9ad9cf5ad60faVendor (CNA)
Linux Linux88b2ddb0c4f1dc874d4598e78cc830c64315ed86Vendor (CNA)
Linux Linux8fc6056dcf79937c46c97fa4996cda65956437a9Vendor (CNA)
Linux Linux9337ed5e777e1c19854928cba7a8131dd00e611bVendor (CNA)
Linux Linuxadbcb34f03abb89e681a5907c4c3ce4bf224991dVendor (CNA)
debian:linux6.1.176-1 · Debian:12Package registry (OSV)

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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • 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
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

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.

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records