CyberSecBulletin
CVE-2024-53147NVD status: Modified

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2024-53147 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 98e3572505a9ec550b5296c67c4517120356c8d6, 82dc96f0f4eec8afdde8467d21d1b6b989dbb20a, a0120d6463368378539ef928cf067d02372efb8c 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 98e3572505a9ec550b5296c67c4517120356c8d6 or 82dc96f0f4eec8afdde8467d21d1b6b989dbb20a or a0120d6463368378539ef928cf067d02372efb8c or 3ddd1cb2b458ff6a193bc845f408dfff217db29e, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 6.11.11 or 6.12.2, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 up to, but not including, 98e3572505a9ec550b5296c67c4517120356c8d6; 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 up to, but not including, 82dc96f0f4eec8afdde8467d21d1b6b989dbb20a; 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 up to, but not including, a0120d6463368378539ef928cf067d02372efb8c; 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 up to, but not including, 3ddd1cb2b458ff6a193bc845f408dfff217db29e; 1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003 up to, but not including, 184fa506e392eb78364d9283c961217ff2c0617b; 5.798e3572505a9ec550b5296c67c4517120356c8d6, 82dc96f0f4eec8afdde8467d21d1b6b989dbb20a, a0120d6463368378539ef928cf067d02372efb8c, 3ddd1cb2b458ff6a193bc845f408dfff217db29e, 184fa506e392eb78364d9283c961217ff2c0617b
LinuxLinux Kernel5.7 up to, but not including, 6.11.11; 6.12 up to, but not including, 6.12.26.11.11, 6.12.2

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
NoneNo data is disclosed.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.17.8HighCNA
CVSS 3.17.1HighNVD
CVSS 3.17.1HighCISA (ADP)

Official description

In the Linux kernel, the following vulnerability has been resolved: exfat: fix out-of-bounds access of directory entries In the case of the directory size is greater than or equal to the cluster size, if start_clu becomes an EOF cluster(an invalid cluster) due to file system corruption, then the directory entry where ei->hint_femp.eidx hint is outside the directory, resulting in an out-of-bounds access, which may cause further file system corruption. This commit adds a check for start_clu, if it is an invalid cluster, the file or directory will be treated as empty.

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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