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NVD / CVE Program· CNA Linux

CVE-2025-40077: f2fs: fix to avoid overflow while left shift operation

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.19% (FIRST EPSS).
  • Fixed version: Linux Linux 0e75a098b0a37f02ca31fe99ac16004c8163cf67, 0fe1c6bec54ea68ed8c987b3890f2296364e77bb, 57d3381dfb97ff73ddd18601017fec21cca80985.

Low priority for now. Upgrade to Linux Linux 0e75a098b0a37f02ca31fe99ac16004c8163cf67, 0fe1c6bec54ea68ed8c987b3890f2296364e77bb, 57d3381dfb97ff73ddd18601017fec21cca80985 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 avoid overflow while left shift operation Should cast type of folio->index from pgoff_t to loff_t to avoid overflow while left shift operation.

—No exploit Fix available
Published
Oct 28, 2025
Updated
Oct 30, 2026
EPSS
0.1% · 9th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • 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

    • 5.8affected
    • 3265d3db1f16395cfc6b8ea9b31b4001d98d05ef and later · before 7fb12f75da1da83b29964c02646f851d919301eaaffected · git
    • 3265d3db1f16395cfc6b8ea9b31b4001d98d05ef and later · before ef49378864bb1ed14cd48c8e687729e12714d849affected · git
    • 3265d3db1f16395cfc6b8ea9b31b4001d98d05ef and later · before 0e75a098b0a37f02ca31fe99ac16004c8163cf67affected · git
    • 3265d3db1f16395cfc6b8ea9b31b4001d98d05ef and later · before 57d3381dfb97ff73ddd18601017fec21cca80985affected · git
    • 3265d3db1f16395cfc6b8ea9b31b4001d98d05ef and later · before 0fe1c6bec54ea68ed8c987b3890f2296364e77bbaffected · git
    • before 5.8not affected · semver
    • 6.1.191 and later · up to and including 6.1.*not affected · semver
    • 6.6.117 and later · up to and including 6.6.*not affected · semver
    • 6.12.59 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:12linuxfrom 0—
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.6-16.17.6-1

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-2025-40075Oct 28, 2025 · tcp_metrics: use dst_dev_net_rcu()
    32Monitor
  • ← EarlierCVE-2025-40076Oct 28, 2025 · PCI: rcar-host: Pass proper IRQ domain to generic_handle_domain_irq()
    0Monitor
  • Later →CVE-2025-40078Oct 28, 2025 · bpf: Explicitly check accesses to bpf_sock_addr
    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 Linux0e75a098b0a37f02ca31fe99ac16004c8163cf67Vendor (CNA)
Linux Linux0fe1c6bec54ea68ed8c987b3890f2296364e77bbVendor (CNA)
Linux Linux57d3381dfb97ff73ddd18601017fec21cca80985Vendor (CNA)
Linux Linux7fb12f75da1da83b29964c02646f851d919301eaVendor (CNA)
Linux Linuxef49378864bb1ed14cd48c8e687729e12714d849Vendor (CNA)
debian:linux6.12.63-1 · Debian:13Package 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.

No history yet (it accumulates with the daily EPSS job).

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 researchers

Finders, 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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

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

All records