Integer Overflow or Wraparound Affecting kernel-livepatch-4_12_14-197_29-default package, versions <1-3.3.1


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
3.47% (89th percentile)

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  • Snyk IDSNYK-SLES151-KERNELLIVEPATCH4121419729DEFAULT-2722564
  • published14 Apr 2022
  • disclosed17 Dec 2019

Introduced: 17 Dec 2019

CVE-2019-18805  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 kernel-livepatch-4_12_14-197_29-default to version 1-3.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-4_12_14-197_29-default package and not the kernel-livepatch-4_12_14-197_29-default package as distributed by SLES. See How to fix? for SLES:15.1 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 Base Scores

version 3.1