CVE-2024-44974

NameCVE-2024-44974
DescriptionIn the Linux kernel, the following vulnerability has been resolved: mptcp: pm: avoid possible UaF when selecting endp select_local_address() and select_signal_address() both select an endpoint entry from the list inside an RCU protected section, but return a reference to it, to be read later on. If the entry is dereferenced after the RCU unlock, reading info could cause a Use-after-Free. A simple solution is to copy the required info while inside the RCU protected section to avoid any risk of UaF later. The address ID might need to be modified later to handle the ID0 case later, so a copy seems OK to deal with.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3912-1, DSA-5782-1, ELA-1219-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie, jessie (lts)3.16.84-1vulnerable
stretch (security)4.9.320-2vulnerable
stretch (lts), stretch4.9.320-3vulnerable
buster (security), buster, buster (lts)4.19.316-1vulnerable
bullseye5.10.223-1vulnerable
bullseye (security)5.10.226-1fixed
bookworm6.1.106-3vulnerable
bookworm (security)6.1.112-1fixed
sid, trixie6.11.5-1fixed
linux-5.10 (PTS)jessie, jessie (lts)5.10.226-1~deb8u1fixed
stretch (lts), stretch5.10.226-1~deb9u1fixed
buster, buster (lts)5.10.226-1~deb10u1fixed
buster (security)5.10.218-1~deb10u1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch(unfixed)end-of-life
linuxsourcebuster(unfixed)end-of-life
linuxsourcebullseye5.10.226-1DLA-3912-1
linuxsourcebookworm6.1.112-1DSA-5782-1
linuxsource(unstable)6.10.7-1
linux-5.10sourcejessie5.10.226-1~deb8u1ELA-1219-1
linux-5.10sourcestretch5.10.226-1~deb9u1ELA-1219-1
linux-5.10sourcebuster5.10.226-1~deb10u1ELA-1219-1

Notes

https://git.kernel.org/linus/48e50dcbcbaaf713d82bf2da5c16aeced94ad07d (6.11-rc5)

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