DescriptionAn issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when a server is disconnected during netsplits. NOTE: this issue exists because of an incomplete fix for CVE-2017-7191.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
Debian Bugs890674

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
irssi (PTS)stretch1.0.7-1~deb9u1fixed
stretch (security)1.0.7-1~deb9u2fixed
bookworm, sid, bullseye1.2.3-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
irssisourcewheezy(not affected)
irssisourcejessie(not affected)


[jessie] - irssi <not-affected> (Vulnerable netsplit code introduced in 1.0.0)
[wheezy] - irssi <not-affected> (Vulnerable netsplit code introduced in 1.0.0)
Some netsplit related changes as introduced in 1.0.0 were reverted:
But the CVE is specifically for the use-after-free issue.

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