CyberSecBulletin
CVE-2024-35964NVD status: Modified

Linux: Improper Validation of Specified Quantity in Input

Published Updated By the CyberSecBulletin desk

CVE-2024-35964 is a high-severity improper validation of specified quantity in input 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 cec736e60dc18d91b88af28d96664bff284b02d1, 6a6baa1ee7a9df33adbf932305053520b9741b35, 0c4a89f4690478969729c7ba5f69d53d8516aa12 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 cec736e60dc18d91b88af28d96664bff284b02d1 or 6a6baa1ee7a9df33adbf932305053520b9741b35 or 0c4a89f4690478969729c7ba5f69d53d8516aa12 or 9e8742cdfc4b0e65266bb4a901a19462bda9285e, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 6.1.119 or 6.6.55 or 6.8.7, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinuxccf74f2390d60a2f9a75ef496d2564abb478f46a up to, but not including, cec736e60dc18d91b88af28d96664bff284b02d1; ccf74f2390d60a2f9a75ef496d2564abb478f46a up to, but not including, 6a6baa1ee7a9df33adbf932305053520b9741b35; ccf74f2390d60a2f9a75ef496d2564abb478f46a up to, but not including, 0c4a89f4690478969729c7ba5f69d53d8516aa12; ccf74f2390d60a2f9a75ef496d2564abb478f46a up to, but not including, 9e8742cdfc4b0e65266bb4a901a19462bda9285e; 6.0cec736e60dc18d91b88af28d96664bff284b02d1, 6a6baa1ee7a9df33adbf932305053520b9741b35, 0c4a89f4690478969729c7ba5f69d53d8516aa12, 9e8742cdfc4b0e65266bb4a901a19462bda9285e
LinuxLinux Kernel6.0 up to, but not including, 6.1.119; 6.2 up to, but not including, 6.6.55; 6.7 up to, but not including, 6.8.7; 6.96.1.119, 6.6.55, 6.8.7

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: Bluetooth: ISO: Fix not validating setsockopt user input Check user input length before copying data.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Validation of Specified Quantity in Input

The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

More Improper Validation of Specified Quantity in Input vulnerabilities (CWE-1284)

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 Improper Validation of Specified Quantity in Input vulnerabilities

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