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Integer Overflow or Wraparound Affecting kernel-debug-modules package, versions <0:4.18.0-193.el8

Severity

 Recommended
0.0
high
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    1.01% (85th percentile)

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  • Snyk ID SNYK-CENTOS8-KERNELDEBUGMODULES-2037603
  • published 26 Jul 2021
  • disclosed 16 Apr 2019
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Introduced: 16 Apr 2019

CVE-2019-18805 Open this link in a new tab
CWE-190 Open this link in a new tab

How to fix?

Upgrade Centos:8 kernel-debug-modules to version 0:4.18.0-193.el8 or higher.

NVD Description

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

An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.

CVSS Scores

version 3.1
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NVD

9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

SUSE

2.3 low