CyberSecBulletin
CVE-2024-46747NVD status: Modified

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2024-46747 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 e239e44dcd419b13cf840e2a3a833204e4329714, fac3cb3c6428afe2207593a183b5bc4742529dfd, 34185de73d74fdc90e8651cfc472bfea6073a13f 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 0.28% 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 e239e44dcd419b13cf840e2a3a833204e4329714 or fac3cb3c6428afe2207593a183b5bc4742529dfd or 34185de73d74fdc90e8651cfc472bfea6073a13f or 890dde6001b651be79819ef7a3f8c71fc8f9cabf, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 4.19.322 or 5.4.284 or 5.10.226 or 5.15.167, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinuxb8e759b8f6dab1c473c30ac12709095d0b81078e up to, but not including, e239e44dcd419b13cf840e2a3a833204e4329714; b8e759b8f6dab1c473c30ac12709095d0b81078e up to, but not including, fac3cb3c6428afe2207593a183b5bc4742529dfd; b8e759b8f6dab1c473c30ac12709095d0b81078e up to, but not including, 34185de73d74fdc90e8651cfc472bfea6073a13f; b8e759b8f6dab1c473c30ac12709095d0b81078e up to, but not including, 890dde6001b651be79819ef7a3f8c71fc8f9cabf; b8e759b8f6dab1c473c30ac12709095d0b81078e up to, but not including, e4a602a45aecd6a98b4b37482f5c9f8f67a32ddd; b8e759b8f6dab1c473c30ac12709095d0b81078e up to, but not including, 30e9ce7cd5591be639b53595c95812f1a2afdfdc; b8e759b8f6dab1c473c30ac12709095d0b81078e up to, but not including, 48b2108efa205f4579052c27fba2b22cc6ad8aa0; b8e759b8f6dab1c473c30ac12709095d0b81078e up to, but not including, a6e9c391d45b5865b61e569146304cff72821a5d; and 1 more rangese239e44dcd419b13cf840e2a3a833204e4329714, fac3cb3c6428afe2207593a183b5bc4742529dfd, 34185de73d74fdc90e8651cfc472bfea6073a13f, 890dde6001b651be79819ef7a3f8c71fc8f9cabf, e4a602a45aecd6a98b4b37482f5c9f8f67a32ddd, 30e9ce7cd5591be639b53595c95812f1a2afdfdc
LinuxLinux Kernelbefore 4.19.322; 4.20 up to, but not including, 5.4.284; 5.5 up to, but not including, 5.10.226; 5.11 up to, but not including, 5.15.167; 5.16 up to, but not including, 6.1.110; 6.2 up to, but not including, 6.6.51; 6.7 up to, but not including, 6.10.10; 6.114.19.322, 5.4.284, 5.10.226, 5.15.167, 6.1.110, 6.6.51

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.

Official description

In the Linux kernel, the following vulnerability has been resolved: HID: cougar: fix slab-out-of-bounds Read in cougar_report_fixup report_fixup for the Cougar 500k Gaming Keyboard was not verifying that the report descriptor size was correct before accessing it

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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