CVE-2024-26626

Local kernel crash via dropped packet destination

Published Mar 6, 2024 · Updated Aug 5, 2026

NULL pointer dereference in Linux IPv4 multicast routing allows local users to crash affected kernels by forwarding a queued report packet. ipv4_pktinfo_prepare() drops the queued packet's destination metadata, but ip_mr_forward() later assumes that pointer is set and dereferences it. Reachability requires local low-privileged access to exercise IPv4 multicast-routing socket operations; the resulting panic interrupts the host.

CVSS severity5.5
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux IPv4 multicast routing allows local users to crash affected kernels by forwarding a queued report packet. ipv4_pktinfo_prepare() drops the queued packet's destination metadata, but ip_mr_forward() later assumes that pointer is set and dereferences it. Reachability requires local low-privileged access to exercise IPv4 multicast-routing socket operations; the resulting panic interrupts the host.

The record

CVE
CVE-2024-26626
Published
Mar 6, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1.75 <6.1.77
  2. Affected versionversion=6.6.14 <6.6.16
  3. Affected versionversion=6.7.2 <6.7.4
  4. Affected versionversion=7b32e63f881432bf30f282328b8e64c6aa494ba2 <dcaafdba6c6162bb49f1192850bc3bbc3707738c
  5. Affected versionversion=7d97858e21fbc472acda7d908357c5fe54a8e439 <2e8c9ae40adda2be1ba41c05fd3cd1e61cce3207
  6. Affected versionversion=bb7403655b3c3eb245d0ee330047cd3e20b3c4af <e622502c310f1069fd9f41cd38210553115f610a
  7. Affected versionversion=f69365e3a7cab819099249c50b39f4450fdddc60 <d2f1b7fe74afd66298dbb3c7b39e7b62e4df1724

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1.75 <6.1.77; version=6.6.14 <6.6.16; version=6.7.2 <6.7.4; version=7b32e63f881432bf30f282328b8e64c6aa494ba2 <dcaafdba6c6162bb49f1192850bc3bbc3707738c; version=7d97858e21fbc472acda7d908357c5fe54a8e439 <2e8c9ae40adda2be1ba41c05fd3cd1e61cce3207; version=bb7403655b3c3eb245d0ee330047cd3e20b3c4af <e622502c310f1069fd9f41cd38210553115f610a; version=f69365e3a7cab819099249c50b39f4450fdddc60 <d2f1b7fe74afd66298dbb3c7b39e7b62e4df1724

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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