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NVD / CVE Program· CNA Linux

CVE-2026-72376: afs: Fix misplaced inc of net->cells_outstanding

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: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 5.10, 5.9, 5ea289ca751c47125f6a4138c93ba10c05cd28f0.

Low priority for now. Upgrade to Linux Linux 5.10, 5.9, 5ea289ca751c47125f6a4138c93ba10c05cd28f0 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: afs: Fix misplaced inc of net->cells_outstanding Fix net->cells_outstanding being incremented before the check for failure of idr_alloc_cyclic(), leaving the count incremented on error.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 17, 2026
EPSS
0.2% · 11th 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 · 0.2%

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-2026-72376

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

    • e44b8d2aa1543f5c554fda7839574abe8a5ef5ba, f339eda9b90e49e82043c145ac628d679d913638, 5.10affected
    • 88c853c3f5c0a07c5db61b494ee25152535cfeee and later · before 6e310f818abcef947a06584158b9e6c6cd0c98d3affected · git
    • 88c853c3f5c0a07c5db61b494ee25152535cfeee and later · before 5ea289ca751c47125f6a4138c93ba10c05cd28f0affected · git
    • 88c853c3f5c0a07c5db61b494ee25152535cfeee and later · before 654a546c34f3921dd03f9ea74e60139ebffd9e20affected · git
    • 88c853c3f5c0a07c5db61b494ee25152535cfeee and later · before c9c3b615a462a4023bd148f02c564e175ed10502affected · git
    • 5.8.17 and later · before 5.9affected · semver
    • 5.9.2 and later · before 5.10affected · semver
    • before 5.10not affected · semver
    • 6.12.97 and later · up to and including 6.12.*not affected · semver
    • 6.18.40 and later · up to and including 6.18.*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 6.12.100-16.12.100-1
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-2026-72369Aug 15, 2026 · minix: avoid overflow in bitmap block count calculation
    31Monitor
  • ← EarlierCVE-2026-72372Aug 15, 2026 · afs: Fix lack of locking around modifications of net->cells_dyn_ino
    31Monitor
  • Later →CVE-2026-72377Aug 15, 2026 · afs: Remove setting of AS_RELEASE_ALWAYS for symlinks and mountpoints
    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 Linux5.10Vendor (CNA)
Linux Linux5.9Vendor (CNA)
Linux Linux5ea289ca751c47125f6a4138c93ba10c05cd28f0Vendor (CNA)
Linux Linux654a546c34f3921dd03f9ea74e60139ebffd9e20Vendor (CNA)
Linux Linux6e310f818abcef947a06584158b9e6c6cd0c98d3Vendor (CNA)
Linux Linuxc9c3b615a462a4023bd148f02c564e175ed10502Vendor (CNA)
debian:linux6.12.100-1 · 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.

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.

—

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 (3 more)

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

All records