Integer Overflow or Wraparound Affecting torvalds/linux package, versions [4.4,4.4.180)[4.9,4.9.172)[4.14,4.14.115)[4.19,4.19.38)[5.0,5.0.11)


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.57% (68th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3005002
  • published26 Jan 2022
  • disclosed7 Nov 2019
  • creditUnknown

Introduced: 7 Nov 2019

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

How to fix?

Upgrade torvalds/linux to version 4.4.180, 4.9.172, 4.14.115, 4.19.38, 5.0.11 or higher.

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. 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.

References

CVSS Base Scores

version 3.1