CVE-2024-50123

Kernel-memory disclosure via sockmap link type overread

Published Nov 5, 2024 · Updated Aug 5, 2026

Out-of-bounds read in Linux 6.10 through 6.11.5 and 6.12-rc1 through 6.12-rc4 allows local users to read kernel memory. bpf_link_show_fdinfo() indexes bpf_link_type_strs with sockmap link type 14, one past the array, then treats the adjacent kernel word as a string pointer. A local user must create a sockmap link through delegated BPF privileges or open a pinned link; reading its fdinfo can disclose kernel memory or trigger a kernel oops or panic.

CVSS severity7.1
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Linux 6.10 through 6.11.5 and 6.12-rc1 through 6.12-rc4 allows local users to read kernel memory. bpf_link_show_fdinfo() indexes bpf_link_type_strs with sockmap link type 14, one past the array, then treats the adjacent kernel word as a string pointer. A local user must create a sockmap link through delegated BPF privileges or open a pinned link; reading its fdinfo can disclose kernel memory or trigger a kernel oops or panic.

The record

CVE
CVE-2024-50123
Published
Nov 5, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 5, 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

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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=6.10
  2. Affected versionversion=699c23f02c65cbfc3e638f14ce0d70c23a2e1f02 <6d79f12c0ce2bc8ff5f109093df1734bd6450615
  3. Affected versionversion=699c23f02c65cbfc3e638f14ce0d70c23a2e1f02 <c2f803052bc7a7feb2e03befccc8e49b6ff1f5f5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=699c23f02c65cbfc3e638f14ce0d70c23a2e1f02 <6d79f12c0ce2bc8ff5f109093df1734bd6450615; version=699c23f02c65cbfc3e638f14ce0d70c23a2e1f02 <c2f803052bc7a7feb2e03befccc8e49b6ff1f5f5

Published CVSS scores

7.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1Linux kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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.

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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-125Out-of-bounds Read

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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