CyberSecBulletin
CVE-2024-46723NVD status: Modified

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2024-46723 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 82ac8f1d02886b5d8aeb9e058989d3bd6fc581e2, e789e05388854a5436b2b5d8695fdb864c9bcc27, 5f09fa5e0ad45fbca71933a0e024ca52da47d59b 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 0.25% 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 82ac8f1d02886b5d8aeb9e058989d3bd6fc581e2 or e789e05388854a5436b2b5d8695fdb864c9bcc27 or 5f09fa5e0ad45fbca71933a0e024ca52da47d59b or 0bef65e069d84d1cd77ce757aea0e437b8e2bd33, 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
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21 up to, but not including, 82ac8f1d02886b5d8aeb9e058989d3bd6fc581e2; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 up to, but not including, e789e05388854a5436b2b5d8695fdb864c9bcc27; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 up to, but not including, 5f09fa5e0ad45fbca71933a0e024ca52da47d59b; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 up to, but not including, 0bef65e069d84d1cd77ce757aea0e437b8e2bd33; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 up to, but not including, 8981927ebc6c12fa76b30c4178acb462bab15f54; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 up to, but not including, f2b7a9f3839e92f43559b2795b34640ca8cf839f; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 up to, but not including, 23fefef859c6057e6770584242bdd938254f8ddd; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 up to, but not including, 8944acd0f9db33e17f387fdc75d33bb473d7936f; and 1 more ranges82ac8f1d02886b5d8aeb9e058989d3bd6fc581e2, e789e05388854a5436b2b5d8695fdb864c9bcc27, 5f09fa5e0ad45fbca71933a0e024ca52da47d59b, 0bef65e069d84d1cd77ce757aea0e437b8e2bd33, 8981927ebc6c12fa76b30c4178acb462bab15f54, f2b7a9f3839e92f43559b2795b34640ca8cf839f
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, 6.1.109; 6.2 up to, but not including, 6.6.50; 6.7 up to, but not including, 6.10.94.19.322, 5.4.284, 5.10.226, 5.15.167, 6.1.109, 6.6.50

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: drm/amdgpu: fix ucode out-of-bounds read warning Clear warning that read ucode[] may out-of-bounds.

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

Spotted an error? Tell us.