CyberSecBulletin
CVE-2024-42292NVD status: Modified

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2024-42292 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 81a15d28f32af01493ae8c5457e0d55314a4167d, b59a5e86a3934f1b6a5bd1368902dbc79bdecc90, 648d5490460d38436640da0812bf7f6351c150d2 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 81a15d28f32af01493ae8c5457e0d55314a4167d or b59a5e86a3934f1b6a5bd1368902dbc79bdecc90 or 648d5490460d38436640da0812bf7f6351c150d2 or c5ee8adc8d98a49703320d13878ba2b923b142f5, whichever matches your release line, or a later version.
  2. Update SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1.1 or a later version.
  3. Update Linux Kernel to 4.19.320 or 5.4.282 or 5.10.224 or 5.15.165, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux9b3fa47d4a76b1d606a396455f9bbeee083ef008 up to, but not including, 81a15d28f32af01493ae8c5457e0d55314a4167d; 9b3fa47d4a76b1d606a396455f9bbeee083ef008 up to, but not including, b59a5e86a3934f1b6a5bd1368902dbc79bdecc90; 9b3fa47d4a76b1d606a396455f9bbeee083ef008 up to, but not including, 648d5490460d38436640da0812bf7f6351c150d2; 9b3fa47d4a76b1d606a396455f9bbeee083ef008 up to, but not including, c5ee8adc8d98a49703320d13878ba2b923b142f5; 9b3fa47d4a76b1d606a396455f9bbeee083ef008 up to, but not including, 68d63ace80b76395e7935687ecdb86421adc2168; 9b3fa47d4a76b1d606a396455f9bbeee083ef008 up to, but not including, 57fe01d3d04276875c7e3a6dc763517fc05b8762; 9b3fa47d4a76b1d606a396455f9bbeee083ef008 up to, but not including, d4663536754defff75ff1eca0aaebc41da165a8d; 9b3fa47d4a76b1d606a396455f9bbeee083ef008 up to, but not including, dd6e9894b451e7c85cceb8e9dc5432679a70e7dc; and 1 more ranges81a15d28f32af01493ae8c5457e0d55314a4167d, b59a5e86a3934f1b6a5bd1368902dbc79bdecc90, 648d5490460d38436640da0812bf7f6351c150d2, c5ee8adc8d98a49703320d13878ba2b923b142f5, 68d63ace80b76395e7935687ecdb86421adc2168, 57fe01d3d04276875c7e3a6dc763517fc05b8762
SiemensSIMATIC S7-1500 TM MFP - GNU/Linux subsystembefore V1.1.1V1.1.1
LinuxLinux Kernel4.15.1 up to, but not including, 4.19.320; 4.20 up to, but not including, 5.4.282; 5.5 up to, but not including, 5.10.224; 5.11 up to, but not including, 5.15.165; 5.16 up to, but not including, 6.1.103; 6.2 up to, but not including, 6.6.44; 6.7 up to, but not including, 6.10.3; 4.154.19.320, 5.4.282, 5.10.224, 5.15.165, 6.1.103, 6.6.44

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: kobject_uevent: Fix OOB access within zap_modalias_env() zap_modalias_env() wrongly calculates size of memory block to move, so will cause OOB memory access issue if variable MODALIAS is not the last one within its @env parameter, fixed by correcting size to memmove.

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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