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NVD / CVE Program· CNA Linux

CVE-2024-26950: wireguard: netlink: access device through ctx instead of peer

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: 0.24% (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 09c3fa70f65175861ca948cb2f0f791e666c90e5, 493aa6bdcffd90a4f82aa614fe4f4db0641b4068, 4be453271a882c8ebc28df3dbf9e4d95e6ac42f5; azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 09c3fa70f65175861ca948cb2f0f791e666c90e5, 493aa6bdcffd90a4f82aa614fe4f4db0641b4068, 4be453271a882c8ebc28df3dbf9e4d95e6ac42f5; azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1 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: wireguard: netlink: access device through ctx instead of peer The previous commit fixed a bug that led to a NULL peer->device being dereferenced. It's actually easier and faster performance-wise to instead get the device from ctx->wg. This semantically makes more sense too, since ctx->wg->peer_allowedips.seq is compared with ctx->allowedips_seq, basing them both in ctx. This also acts as a defence in depth provision against freed peers.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
May 1, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 15th percentile

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 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2024-26950

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
debiandebian linux

Affected versions

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

  • debian debian linux10.0
  • linux linux kernel5.11 and later · before 5.15.154
  • linux linux kernel5.16 and later · before 6.1.84
  • linux linux kernel5.6 and later · before 5.10.215
  • linux linux kernel6.7 and later · before 6.7.12
  • linux linux kernel6.8 and later · before 6.8.3
  • linux linux kernel6.2 and later · before 6.6.24

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

    • 5.6affected
    • e7096c131e5161fa3b8e52a650d7719d2857adfd and later · before 493aa6bdcffd90a4f82aa614fe4f4db0641b4068affected · git
    • e7096c131e5161fa3b8e52a650d7719d2857adfd and later · before 4be453271a882c8ebc28df3dbf9e4d95e6ac42f5affected · git
    • e7096c131e5161fa3b8e52a650d7719d2857adfd and later · before 09c3fa70f65175861ca948cb2f0f791e666c90e5affected · git
    • e7096c131e5161fa3b8e52a650d7719d2857adfd and later · before c991567e6c638079304cc15dff28748e4a3c4a37affected · git
    • e7096c131e5161fa3b8e52a650d7719d2857adfd and later · before 93bcc1752c69bb309f4d8cfaf960ef1faeb34996affected · git
    • e7096c131e5161fa3b8e52a650d7719d2857adfd and later · before d44bd323d8bb8031eef4bdc44547925998a11e47affected · git
    • e7096c131e5161fa3b8e52a650d7719d2857adfd and later · before 71cbd32e3db82ea4a74e3ef9aeeaa6971969c86faffected · git
    • before 5.6not affected · semver
    • 5.10.215 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.85-16.1.85-1
Debian:13linuxbefore 6.7.12-16.7.12-1

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-2024-26947May 1, 2024 · ARM: 9359/1: flush: check if the folio is reserved for no-mapping addresses
    22Monitor
  • ← EarlierCVE-2024-26948May 1, 2024 · drm/amd/display: Add a dc_state NULL check in dc_state_release
    22Monitor
  • Later →CVE-2024-26951May 1, 2024 · wireguard: netlink: check for dangling peer via is_dead instead of empty list
    31Monitor

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 Linux09c3fa70f65175861ca948cb2f0f791e666c90e5Vendor (CNA)
Linux Linux493aa6bdcffd90a4f82aa614fe4f4db0641b4068Vendor (CNA)
Linux Linux4be453271a882c8ebc28df3dbf9e4d95e6ac42f5Vendor (CNA)
Linux Linux71cbd32e3db82ea4a74e3ef9aeeaa6971969c86fVendor (CNA)
Linux Linux93bcc1752c69bb309f4d8cfaf960ef1faeb34996Vendor (CNA)
Linux Linuxc991567e6c638079304cc15dff28748e4a3c4a37Vendor (CNA)
Linux Linuxd44bd323d8bb8031eef4bdc44547925998a11e47Vendor (CNA)
azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.06.6.35.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.06.6.35.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.85-1 · 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.

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).

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)

CWE-476 · NULL Pointer Dereference

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 (8 more)

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

All records