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NVD / CVE Program· CNA Linux

CVE-2026-74432: rxrpc: Fix leak of released call in recvmsg(MSG_PEEK)

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 04c7103dc0923cc6ac95b97aa66bab70da7ace84, 2b69b61057eb0b3db9ad754ef0f1436b7af3a9f5, 4bdb9e471f5b1ac9cbe4add5de7ff085a0ec303c.

Low priority for now. Upgrade to Linux Linux 04c7103dc0923cc6ac95b97aa66bab70da7ace84, 2b69b61057eb0b3db9ad754ef0f1436b7af3a9f5, 4bdb9e471f5b1ac9cbe4add5de7ff085a0ec303c 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: rxrpc: Fix leak of released call in recvmsg(MSG_PEEK) Fix rxrpc_recvmsg() to also drop the ref it holds on an already-released call if MSG_PEEK is in force (the function holds a ref on the call irrespective of whether MSG_PEEK is specified or not).

—No exploit Fix available
Published
Aug 15, 2026
Updated
Oct 30, 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

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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

    • 4aed0eeca58e26d752bb08b293b8dc75c6820b23, cb720b068b18fb39c96980eb3c13f09427512be7, 6c75a97a32a5fa2060c3dd30207e63b6914b606d, 6.16affected
    • 7692bde890061797f3dece0148d7859e85c55778 and later · before 86eff3140c9d4b52bba13d1cba266da933403e51affected · git
    • 839fe96c15209dc2255c064bb44b636efe04f032 and later · before e473cd3046a1aaec1e39af5df2042ce7c04d5e74affected · git
    • 962fb1f651c2cf2083e0c3ef53ba69e3b96d3fbc and later · before 2b69b61057eb0b3db9ad754ef0f1436b7af3a9f5affected · git
    • 962fb1f651c2cf2083e0c3ef53ba69e3b96d3fbc and later · before 04c7103dc0923cc6ac95b97aa66bab70da7ace84affected · git
    • 962fb1f651c2cf2083e0c3ef53ba69e3b96d3fbc and later · before 4bdb9e471f5b1ac9cbe4add5de7ff085a0ec303caffected · git
    • 6.6.100 and later · before 6.6.145affected · semver
    • 6.12.40 and later · before 6.12.97affected · semver
    • 5.10.266 and later · before 5.11affected · semver
    • 6.1.191 and later · before 6.2affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
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-2026-74417Aug 15, 2026 · drm/radeon: fix integer overflow in radeon_align_pitch()
    31Monitor
  • ← EarlierCVE-2026-74427Aug 15, 2026 · afs: Fix netns teardown to cancel the preallocation charger
    39Monitor
  • Later →CVE-2026-74436Aug 15, 2026 · rxrpc: serialize kernel accept preallocation with socket teardown
    39Monitor

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 Linux04c7103dc0923cc6ac95b97aa66bab70da7ace84Vendor (CNA)
Linux Linux2b69b61057eb0b3db9ad754ef0f1436b7af3a9f5Vendor (CNA)
Linux Linux4bdb9e471f5b1ac9cbe4add5de7ff085a0ec303cVendor (CNA)
Linux Linux5.11Vendor (CNA)
Linux Linux6.12.97Vendor (CNA)
Linux Linux6.16Vendor (CNA)
Linux Linux6.2Vendor (CNA)
Linux Linux6.6.145Vendor (CNA)
Linux Linux86eff3140c9d4b52bba13d1cba266da933403e51Vendor (CNA)
Linux Linuxe473cd3046a1aaec1e39af5df2042ce7c04d5e74Vendor (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 (4 more)

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

All records