Denial of Service (DoS) Affecting torvalds/linux package, versions [,2.6.25)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
4.62% (91st percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006267
  • published26 Jan 2022
  • disclosed12 Mar 2009
  • creditUnknown

Introduced: 12 Mar 2009

CVE-2009-0778  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 2.6.25 or higher.

Overview

Affected versions of this package are vulnerable to Denial of Service (DoS). The icmp_send function in net/ipv4/icmp.c in the Linux kernel before 2.6.25, when configured as a router with a REJECT route, does not properly manage the Protocol Independent Destination Cache (aka DST) in some situations involving transmission of an ICMP Host Unreachable message, which allows remote attackers to cause a denial of service (connectivity outage) by sending a large series of packets to many destination IP addresses within this REJECT route, related to an "rt_cache leak."

References

CVSS Base Scores

version 3.1