CVE-2024-57802Network attack vector

Kernel-data disclosure via unchecked NET/ROM frame length

Published Jan 15, 2025 · Updated Aug 5, 2026

Uninitialized-memory use in the Linux NET/ROM router allows remote attackers to disclose kernel data or interrupt networking via short AX.25 frames. The nr_route_frame function reads callsign and routing fields from skb->data without first verifying that skb->len covers those fields. A reachable NET/ROM-over-AX.25 path is required, but no authentication or user interaction is needed; repeated frames can leak stale heap bytes, corrupt routing state, or crash instrumented and panic-on-warning kernels.

CVSS severity9.4
Critical
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized-memory use in the Linux NET/ROM router allows remote attackers to disclose kernel data or interrupt networking via short AX.25 frames. The nr_route_frame function reads callsign and routing fields from skb->data without first verifying that skb->len covers those fields. A reachable NET/ROM-over-AX.25 path is required, but no authentication or user interaction is needed; repeated frames can leak stale heap bytes, corrupt routing state, or crash instrumented and panic-on-warning kernels.

The record

CVE
CVE-2024-57802
Published
Jan 15, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 15, 2025CVE 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

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Is a vulnerable build present?

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

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3ba7f80d98d4965349cfcd258dd78418496c1625
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <64e9f54a14f2887be8634fb85cd2f13bec18a184
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <769e36c2119a51070faf58819c58274f57a088db
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <78a110332ae268d0b005247c3b9a7d703b875c49
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a4fd163aed2edd967a244499754dec991d8b4c7d
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cf6befa7c569787f53440274bbed1405fc07738d
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f647d72245aadce30618f4c8fd3803904418dbec
  8. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3ba7f80d98d4965349cfcd258dd78418496c1625; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <64e9f54a14f2887be8634fb85cd2f13bec18a184; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <769e36c2119a51070faf58819c58274f57a088db; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <78a110332ae268d0b005247c3b9a7d703b875c49; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a4fd163aed2edd967a244499754dec991d8b4c7d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cf6befa7c569787f53440274bbed1405fc07738d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f647d72245aadce30618f4c8fd3803904418dbec; version=2.6.12

Published CVSS scores

5.5NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
9.4LinuxCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-908Use of Uninitialized Resource
T1210Exploitation of Remote Services

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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