Use After Free Affecting kernel-devel package, versions <0:3.10.0-123.4.2.el7


Severity

Recommended
high

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.09% (40th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELDEVEL-2032549
  • published 26 Jul 2021
  • disclosed 18 Mar 2014

How to fix?

Upgrade Centos:7 kernel-devel to version 0:3.10.0-123.4.2.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-devel package and not the kernel-devel package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

Use-after-free vulnerability in the nfqnl_zcopy function in net/netfilter/nfnetlink_queue_core.c in the Linux kernel through 3.13.6 allows attackers to obtain sensitive information from kernel memory by leveraging the absence of a certain orphaning operation. NOTE: the affected code was moved to the skb_zerocopy function in net/core/skbuff.c before the vulnerability was announced.

CVSS Scores

version 3.1
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NVD

3.5 low
  • Attack Vector (AV)
    Adjacent
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None
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Red Hat

3.5 low