CVE-2019-15902

NameCVE-2019-15902
DescriptionA backporting error was discovered in the Linux stable/longterm kernel 4.4.x through 4.4.190, 4.9.x through 4.9.190, 4.14.x through 4.14.141, 4.19.x through 4.19.69, and 5.2.x through 5.2.11. Misuse of the upstream "x86/ptrace: Fix possible spectre-v1 in ptrace_get_debugreg()" commit reintroduced the Spectre vulnerability that it aimed to eliminate. This occurred because the backport process depends on cherry picking specific commits, and because two (correctly ordered) code lines were swapped.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1940-1, DSA-4531-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)bullseye (security), bullseye5.10.223-1fixed
bookworm6.1.106-3fixed
bookworm (security)6.1.112-1fixed
trixie6.10.11-1fixed
sid6.10.12-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(not affected)
linuxsourcestretch4.9.189-3+deb9u1DSA-4531-1
linuxsourcebuster4.19.67-2+deb10u1DSA-4531-1
linuxsource(unstable)5.2.17-1
linux-4.9sourcejessie4.9.189-3+deb9u1~deb8u1DLA-1940-1

Notes

[jessie] - linux <not-affected> (Bug never introduced)
https://grsecurity.net/teardown_of_a_failed_linux_lts_spectre_fix.php

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