Bug#976095: linux-image-amd64: kernel crash refcount_t: underflow; use-after-free.

From	Xavier Chantry <chantry.xavier@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#976095: linux-image-amd64: kernel crash refcount_t: underflow; use-after-free.
Date	2020-11-29 18:40 +0100
Message-ID	<BgyQ1-6fv-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: linux-image-amd64
Version: 5.8.10-1~bpo10+1
Severity: important

Version 5.8.10-1~bpo10+1 contains a critical bug that completely freezes the
system with a very basic LibreOffice usage.
This is apparently fixed here :
https://www.mail-archive.com/nouveau@lists.freedesktop.org/msg36460.html

This patch appears in debian linux 5.9.9-1, so we are just waiting for a
backport in buster-backports to confirm the fix.

Thanks.



-- System Information:
Debian Release: 10.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.6.0-0.bpo.2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-amd64 depends on:
ii  linux-image-5.8.0-0.bpo.2-amd64  5.8.10-1~bpo10+1

linux-image-amd64 recommends no packages.

linux-image-amd64 suggests no packages.

-- no debconf information

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Bug#976095: linux-image-amd64: kernel crash refcount_t: underflow; use-after-free. Xavier Chantry <chantry.xavier@gmail.com> - 2020-11-29 18:40 +0100
  Bug#976095: linux-image-amd64: kernel crash refcount_t: underflow; use-after-free. Salvatore Bonaccorso <carnil@debian.org> - 2020-12-03 23:40 +0100
    Bug#976095: linux-image-amd64: kernel crash refcount_t: underflow; use-after-free. Xavier Chantry <chantry.xavier@gmail.com> - 2020-12-06 20:40 +0100
      Bug#976095: linux-image-amd64: kernel crash refcount_t: underflow; use-after-free. Salvatore Bonaccorso <carnil@debian.org> - 2020-12-09 15:10 +0100

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