CyberSecBulletin
CVE-2024-39471NVD status: Modified

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2024-39471 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 5594971e02764aa1c8210ffb838cb4e7897716e8, 8112fa72b7f139052843ff484130d6f97e9f052f, ea906e9ac61e3152bef63597f2d9f4a812fc346a 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 0.24% 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 5594971e02764aa1c8210ffb838cb4e7897716e8 or 8112fa72b7f139052843ff484130d6f97e9f052f or ea906e9ac61e3152bef63597f2d9f4a812fc346a or 011552f29f20842c9a7a21bffe1f6a2d6457ba46, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 5.4.278 or 5.10.219 or 5.15.161 or 6.1.94, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 up to, but not including, 5594971e02764aa1c8210ffb838cb4e7897716e8; 7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 up to, but not including, 8112fa72b7f139052843ff484130d6f97e9f052f; 7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 up to, but not including, ea906e9ac61e3152bef63597f2d9f4a812fc346a; 7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 up to, but not including, 011552f29f20842c9a7a21bffe1f6a2d6457ba46; 7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 up to, but not including, 5b0a3dc3e87821acb80e841b464d335aff242691; 7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 up to, but not including, 0964c84b93db7fbf74f357c1e20957850e092db3; 7d0e6329dfdcfe48311f8888d6a8dfa73bee00a9 up to, but not including, 8b2faf1a4f3b6c748c0da36cda865a226534d520; 5.45594971e02764aa1c8210ffb838cb4e7897716e8, 8112fa72b7f139052843ff484130d6f97e9f052f, ea906e9ac61e3152bef63597f2d9f4a812fc346a, 011552f29f20842c9a7a21bffe1f6a2d6457ba46, 5b0a3dc3e87821acb80e841b464d335aff242691, 0964c84b93db7fbf74f357c1e20957850e092db3
LinuxLinux Kernelbefore 5.4.278; 5.5 up to, but not including, 5.10.219; 5.11 up to, but not including, 5.15.161; 5.16 up to, but not including, 6.1.94; 6.2 up to, but not including, 6.6.34; 6.7 up to, but not including, 6.9.55.4.278, 5.10.219, 5.15.161, 6.1.94, 6.6.34, 6.9.5

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 3.17.8HighCNA
CVSS 3.17.1HighNVD

Official description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: add error handle to avoid out-of-bounds if the sdma_v4_0_irq_id_to_seq return -EINVAL, the process should be stop to avoid out-of-bounds read, so directly return -EINVAL.

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. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Recent Out-of-bounds Read vulnerabilities

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