CVE-2022-42329

NameCVE-2022-42329
DescriptionGuests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The patch for XSA-392 introduced another issue which might result in a deadlock when trying to free the SKB of a packet dropped due to the XSA-392 handling (CVE-2022-42328). Additionally when dropping packages for other reasons the same deadlock could occur in case of netpoll being active for the interface the xen-netback driver is connected to (CVE-2022-42329).
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3244-1, DLA-3245-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)buster4.19.249-2vulnerable
buster (security)4.19.269-1fixed
bullseye5.10.158-2fixed
bullseye (security)5.10.162-1fixed
bookworm, sid6.1.8-1fixed
linux-5.10 (PTS)buster (security)5.10.158-2~deb10u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebuster4.19.269-1DLA-3245-1
linuxsourcebullseye5.10.158-1
linuxsource(unstable)6.0.12-1
linux-5.10sourcebuster5.10.158-2~deb10u1DLA-3244-1

Notes

https://xenbits.xen.org/xsa/advisory-424.html
https://git.kernel.org/linus/74e7e1efdad45580cc3839f2a155174cf158f9b5

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