CyberSecBulletin
CVE-2024-53099NVD status: Modified

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2024-53099 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions 79f87a6ec39fb5968049a6775a528bf58b25c20a, 24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d, 4e8074bb33d18f56af30a0252cb3606d27eb1c13 as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.23% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Linux to 79f87a6ec39fb5968049a6775a528bf58b25c20a or 24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d or 4e8074bb33d18f56af30a0252cb3606d27eb1c13 or d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 6.6.62 or 6.11.9, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux70ed506c3bbcfa846d4636b23051ca79fa4781f7 up to, but not including, 79f87a6ec39fb5968049a6775a528bf58b25c20a; 70ed506c3bbcfa846d4636b23051ca79fa4781f7 up to, but not including, 24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d; 70ed506c3bbcfa846d4636b23051ca79fa4781f7 up to, but not including, 4e8074bb33d18f56af30a0252cb3606d27eb1c13; 70ed506c3bbcfa846d4636b23051ca79fa4781f7 up to, but not including, d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d; 70ed506c3bbcfa846d4636b23051ca79fa4781f7 up to, but not including, b3eb1b6a9f745d6941b345f0fae014dc8bb06d36; 70ed506c3bbcfa846d4636b23051ca79fa4781f7 up to, but not including, 8421d4c8762bd022cb491f2f0f7019ef51b4f0a7; 5.779f87a6ec39fb5968049a6775a528bf58b25c20a, 24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d, 4e8074bb33d18f56af30a0252cb3606d27eb1c13, d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d, b3eb1b6a9f745d6941b345f0fae014dc8bb06d36, 8421d4c8762bd022cb491f2f0f7019ef51b4f0a7
LinuxLinux Kernelbefore 6.6.62; 6.7 up to, but not including, 6.11.9; 6.126.6.62, 6.11.9

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.17.1HighCNA
CVSS 3.17.1HighNVD

Official description

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.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

How developers prevent this class of flaw

  • Use a language that provides appropriate memory abstractions.

More Out-of-bounds Read vulnerabilities (CWE-125)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Recent Out-of-bounds Read vulnerabilities

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