CyberSecBulletin
CVE-2024-35965NVD status: Modified

Linux: Improper Validation of Specified Quantity in Input

Published Updated By the CyberSecBulletin desk

CVE-2024-35965 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 f13b04cf65a86507ff15a9bbf37969d25be3e2a0, 9d42f373391211c7c8af66a3a316533a32b8a607, 28234f8ab69c522ba447f3e041bbfbb284c5959a 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 0.24% 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 f13b04cf65a86507ff15a9bbf37969d25be3e2a0 or 9d42f373391211c7c8af66a3a316533a32b8a607 or 28234f8ab69c522ba447f3e041bbfbb284c5959a or 8ee0c132a61df9723813c40e742dc5321824daa9, 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 5.10.227 or 6.1.87 or 6.6.55 or 6.8.7, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux33575df7be6748292f88453f29319af6d639c5c8 up to, but not including, f13b04cf65a86507ff15a9bbf37969d25be3e2a0; 33575df7be6748292f88453f29319af6d639c5c8 up to, but not including, 9d42f373391211c7c8af66a3a316533a32b8a607; 33575df7be6748292f88453f29319af6d639c5c8 up to, but not including, 28234f8ab69c522ba447f3e041bbfbb284c5959a; 33575df7be6748292f88453f29319af6d639c5c8 up to, but not including, 8ee0c132a61df9723813c40e742dc5321824daa9; 33575df7be6748292f88453f29319af6d639c5c8 up to, but not including, 4f3951242ace5efc7131932e2e01e6ac6baed846; 2.6.39f13b04cf65a86507ff15a9bbf37969d25be3e2a0, 9d42f373391211c7c8af66a3a316533a32b8a607, 28234f8ab69c522ba447f3e041bbfbb284c5959a, 8ee0c132a61df9723813c40e742dc5321824daa9, 4f3951242ace5efc7131932e2e01e6ac6baed846
SiemensSIMATIC S7-1500 TM MFP - GNU/Linux subsystembefore V1.1.1V1.1.1
LinuxLinux Kernel2.6.39 up to, but not including, 5.10.227; 5.11 up to, but not including, 6.1.87; 6.2 up to, but not including, 6.6.55; 6.7 up to, but not including, 6.8.7; 6.95.10.227, 6.1.87, 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: L2CAP: 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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