CVE-2021-35477

NameCVE-2021-35477
DescriptionIn the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.
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)
ReferencesDLA-2785-1
NVD severitylow

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie, jessie (lts)3.16.84-1vulnerable
stretch4.9.228-1vulnerable
stretch (security)4.9.290-1vulnerable
buster4.19.208-1fixed
buster (security)4.19.194-3vulnerable
bullseye5.10.84-1fixed
bullseye (security)5.10.46-5fixed
bookworm5.15.5-2fixed
sid5.15.15-1fixed
linux-4.19 (PTS)stretch (security)4.19.208-1~deb9u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcebuster4.19.208-1
linuxsource(unstable)5.10.46-4
linux-4.19sourcestretch4.19.208-1~deb9u1DLA-2785-1

Notes

https://www.openwall.com/lists/oss-security/2021/08/01/3

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