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Review reviewHigh

CVE-2024-53099

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: bpf: Check validity of link->type in bpf_link_show_fdinfo() If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing bpf_link_type_strs[link->type] may result in an out-of-bounds access. To spot such missed invocations early in the future, checking the validity of link->type in bpf_link_show_fdinfo() and emitting a warning when such invocations are missed.

CVSS
7.1
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.11.26
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: bpf: Check validity of link->type in bpf_link_show_fdinfo() If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing bpf_link_type_strs[link->type] may result in an out-of-bounds access. To spot such missed invocations early in the future, checking the validity of link->type in bpf_link_show_fdinfo() and emitting a warning when such invocations are missed.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 70ed506c3bbcfa846d4636b23051ca79fa4781f7 < 79f87a6ec39fb5968049a6775a528bf58b25c20a, >= 70ed506c3bbcfa846d4636b23051ca79fa4781f7 < 24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d, >= 70ed506c3bbcfa846d4636b23051ca79fa4781f7 < 4e8074bb33d18f56af30a0252cb3606d27eb1c13, >= 70ed506c3bbcfa846d4636b23051ca79fa4781f7 < d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d, >= 70ed506c3bbcfa846d4636b23051ca79fa4781f7 < b3eb1b6a9f745d6941b345f0fae014dc8bb06d36, >= 70ed506c3bbcfa846d4636b23051ca79fa4781f7 < 8421d4c8762bd022cb491f2f0f7019ef51b4f0a7, >= 5.7, < 6.6.62, >= 6.7 < 6.11.9, 6.12
Fixed versions
6.6.62, 6.11.9

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
CWE-125