CyberSecBulletin
CVE-2024-38585NVD status: Analyzed

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2024-38585 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 5996b2b2dac739f2a27da13de8eee5b85b2550b3, f678c3c336559cf3255a32153e9a17c1be4e7c15, 8019d3dd921f39a237a9fab6d2ce716bfac0f983 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 5996b2b2dac739f2a27da13de8eee5b85b2550b3 or f678c3c336559cf3255a32153e9a17c1be4e7c15 or 8019d3dd921f39a237a9fab6d2ce716bfac0f983 or 4e6f225aefeb712cdb870176b6621f02cf235b8c, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 6.1.93 or 6.6.33 or 6.8.12 or 6.9.3, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux0e0ff638400be8f497a35b51a4751fd823f6bd6a up to, but not including, 5996b2b2dac739f2a27da13de8eee5b85b2550b3; 0e0ff638400be8f497a35b51a4751fd823f6bd6a up to, but not including, f678c3c336559cf3255a32153e9a17c1be4e7c15; 0e0ff638400be8f497a35b51a4751fd823f6bd6a up to, but not including, 8019d3dd921f39a237a9fab6d2ce716bfac0f983; 0e0ff638400be8f497a35b51a4751fd823f6bd6a up to, but not including, 4e6f225aefeb712cdb870176b6621f02cf235b8c; 0e0ff638400be8f497a35b51a4751fd823f6bd6a up to, but not including, 791f4641142e2aced85de082e5783b4fb0b977c2; 5.195996b2b2dac739f2a27da13de8eee5b85b2550b3, f678c3c336559cf3255a32153e9a17c1be4e7c15, 8019d3dd921f39a237a9fab6d2ce716bfac0f983, 4e6f225aefeb712cdb870176b6621f02cf235b8c, 791f4641142e2aced85de082e5783b4fb0b977c2
LinuxLinux Kernel5.19 up to, but not including, 6.1.93; 6.2 up to, but not including, 6.6.33; 6.7 up to, but not including, 6.8.12; 6.9 up to, but not including, 6.9.36.1.93, 6.6.33, 6.8.12, 6.9.3

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: tools/nolibc/stdlib: fix memory error in realloc() Pass user_p_len to memcpy() instead of heap->len to prevent realloc() from copying an extra sizeof(heap) bytes from beyond the allocated region.

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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