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NVD / CVE Program· CNA Linux

CVE-2026-46085: rxrpc: Fix rxkad crypto unalignment handling

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 0.44% (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 440d20d95e844b657a93a0b2dcc2aae155efdce6, 6.12.86, 6.18.27; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1.

Low priority for now. Upgrade to Linux Linux 440d20d95e844b657a93a0b2dcc2aae155efdce6, 6.12.86, 6.18.27; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1 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 rxkad crypto unalignment handling Fix handling of a packet with a misaligned crypto length. Also handle non-ENOMEM errors from decryption by aborting. Further, remove the WARN_ON_ONCE() so that it can't be remotely triggered (a trace line can still be emitted).

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
May 27, 2026
Updated
Aug 5, 2026
EPSS
0.4% · 38th percentile
CWE
—

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CNA vs NVD score

NVD
—
CNA · Linux
7.5
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-2026-46085

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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.6.135 and later · before 6.6.140
  • linux linux kernel6.12.82 and later · before 6.12.86
  • linux linux kernel6.18.23 and later · before 6.18.27
  • linux linux kernel6.19.13 and later · before 7.0
  • linux linux kernel7.0.1 and later · before 7.0.4
  • linux linux kernel7.0

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

    • 5cdf57eda01a1ffaeb61ac39ec4dcc94a690431e, 7.0affected
    • 9853917f9edf08efb0b55c26d9eb8340f126d9e9 and later · before f1c6bd0cc786a8fa74829ce3c4b3673944a308f4affected · git
    • e9c369d58785044427450350ad32d6a2497fb379 and later · before 440d20d95e844b657a93a0b2dcc2aae155efdce6affected · git
    • bf4d6e4a6856eedeb7f66eb91224115bfff4e2cb and later · before f0d3efd03b2a9e0f1ffa6df8fcb264af3d494286affected · git
    • f93af41b9f5f798823d0d0fb8765c2a936d76270 and later · before af9271eb666d07b6f65612dc160a47f7cb5220edaffected · git
    • f93af41b9f5f798823d0d0fb8765c2a936d76270 and later · before def304aae2edf321d2671fd6ca766a93c21f877eaffected · git
    • 6.6.135 and later · before 6.6.140affected · semver
    • 6.12.82 and later · before 6.12.86affected · semver
    • 6.18.23 and later · before 6.18.27affected · semver
    • 6.19.13 and later · before 6.20affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:13linuxbefore 6.12.86-16.12.86-1
Debian:14linuxbefore 7.0.4-17.0.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-46082May 27, 2026 · KVM: SVM: Inject #UD for INVLPGA if EFER.SVME=0
    22Monitor
  • ← EarlierCVE-2026-46084May 27, 2026 · RDMA/mana_ib: Disable RX steering on RSS QP destroy
    31Monitor
  • Later →CVE-2026-46087May 27, 2026 · mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start()
    22Monitor

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 Linux440d20d95e844b657a93a0b2dcc2aae155efdce6Vendor (CNA)
Linux Linux6.12.86Vendor (CNA)
Linux Linux6.18.27Vendor (CNA)
Linux Linux6.20Vendor (CNA)
Linux Linux6.6.140Vendor (CNA)
Linux Linuxaf9271eb666d07b6f65612dc160a47f7cb5220edVendor (CNA)
Linux Linuxdef304aae2edf321d2671fd6ca766a93c21f877eVendor (CNA)
Linux Linuxf0d3efd03b2a9e0f1ffa6df8fcb264af3d494286Vendor (CNA)
Linux Linuxf1c6bd0cc786a8fa74829ce3c4b3673944a308f4Vendor (CNA)
azl3 kernel 6.6.139.1-1 on Azure Linux 3.06.6.141.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.12.86-1 · 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

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
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 (4 more)

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

All records