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NVD / CVE Program· CNA Linux

CVE-2026-80591: f2fs: fix listxattr handling of corrupted xattr entries

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.17% (FIRST EPSS).
  • 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.
  • Fixed version: Linux Linux 2770041f34b52334ea63351ffb1cc2007a9de46e, 3c0dbfecd859fd02fe9008f33a83146102ccd9ba, 4.15.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 2770041f34b52334ea63351ffb1cc2007a9de46e, 3c0dbfecd859fd02fe9008f33a83146102ccd9ba, 4.15 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 listxattr handling of corrupted xattr entries Validate the xattr entry before reading its fields in f2fs_listxattr(). Return -EFSCORRUPTED when the entry is outside the valid xattr storage area instead of returning a successful partial result.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Aug 28, 2026
Updated
Aug 29, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.8
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-2026-80591

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

    • ae811cecbbb231f11a84acaf74baca1283b964c7, ed523cbd4a6594edf123dc03ec9d70ea4f793671, 5811f24abd27a8a0791c6909c6ff803659060c84, 5.5affected
    • 688078e7f36c293dae25b338ddc9e0a2790f6e06 and later · before 7dfac47e4189692f35230f3064acf2540e6d75feaffected · git
    • 688078e7f36c293dae25b338ddc9e0a2790f6e06 and later · before c8a10f174316e80d577e6549099b71a7a2111f3faffected · git
    • 688078e7f36c293dae25b338ddc9e0a2790f6e06 and later · before dfa4891c27bccbd83d511a065721e85621f275a1affected · git
    • 688078e7f36c293dae25b338ddc9e0a2790f6e06 and later · before 2770041f34b52334ea63351ffb1cc2007a9de46eaffected · git
    • 688078e7f36c293dae25b338ddc9e0a2790f6e06 and later · before 7dd01f7d0291583e3e5420c95c7d584e114899bdaffected · git
    • 688078e7f36c293dae25b338ddc9e0a2790f6e06 and later · before ec9f79c8d5b28a928e65b67cd138c841571cf502affected · git
    • 688078e7f36c293dae25b338ddc9e0a2790f6e06 and later · before 3c0dbfecd859fd02fe9008f33a83146102ccd9baaffected · git
    • 688078e7f36c293dae25b338ddc9e0a2790f6e06 and later · before 5ef5bc304f23c3fe255d4936472378dcb74d0e94affected · git
    • 4.14.181 and later · before 4.15affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.96-16.12.96-1
Debian:14linuxbefore 7.1.5-17.1.5-1

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-2026-80588Aug 26, 2026 · mptcp: reclaim forward-allocated memory on RX path errors
    30Monitor
  • ← EarlierCVE-2026-80589Aug 26, 2026 · block: stop the timeout timer when releasing a never added disk
    39Monitor
  • Later →CVE-2026-80592Aug 28, 2026 · samples/damon/mtier: fail early if address range parameters are invalid
    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 Linux2770041f34b52334ea63351ffb1cc2007a9de46eVendor (CNA)
Linux Linux3c0dbfecd859fd02fe9008f33a83146102ccd9baVendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux5.5Vendor (CNA)
Linux Linux5ef5bc304f23c3fe255d4936472378dcb74d0e94Vendor (CNA)
Linux Linux7dd01f7d0291583e3e5420c95c7d584e114899bdVendor (CNA)
Linux Linux7dfac47e4189692f35230f3064acf2540e6d75feVendor (CNA)
Linux Linuxc8a10f174316e80d577e6549099b71a7a2111f3fVendor (CNA)
Linux Linuxdfa4891c27bccbd83d511a065721e85621f275a1Vendor (CNA)
Linux Linuxec9f79c8d5b28a928e65b67cd138c841571cf502Vendor (CNA)
debian:linux6.1.180-1 · 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.

EPSS, last 120 days

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 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.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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-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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records