NULL Pointer Dereference Affecting torvalds/linux package, versions [,6.11-rc1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.04% (11th percentile)

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  • Snyk ID SNYK-UNMANAGED-TORVALDSLINUX-7675667
  • published 11 Aug 2024
  • disclosed 8 Aug 2024
  • credit Unknown

How to fix?

Upgrade torvalds/linux to version 6.11-rc1 or higher.

Overview

Affected versions of this package are vulnerable to NULL Pointer Dereference due to improper error handling in the io_alloc_pbuf_ring function. An attacker can cause a denial of service by exploiting the inconsistent handling of NULL vs IS_ERR values. This is only exploitable if the system is configured to use io_uring with specific buffer settings.

CVSS Scores

version 4.0
version 3.1
Expand this section

Snyk

Recommended
6.8 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Attack Requirements (AT)
    None
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Confidentiality (VC)
    None
  • Integrity (VI)
    None
  • Availability (VA)
    High
  • Confidentiality (SC)
    None
  • Integrity (SI)
    None
  • Availability (SA)
    None