Use After Free Affecting kernel-cross-headers package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.05% (18th percentile)

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  • Snyk ID SNYK-RHEL8-KERNELCROSSHEADERS-1341105
  • published 26 Jul 2021
  • disclosed 18 Jun 2020

How to fix?

There is no fixed version for RHEL:8 kernel-cross-headers.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

In the Linux kernel before 5.4.16, a race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c.

CVSS Scores

version 3.1
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NVD

4.2 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

4.2 medium
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SUSE

6.4 medium