[SECURITY] [DLA 3525-1] linux-5.10 security update

Debian LTS Advisory DLA-3525-1 [email protected]
https://www.debian.org/lts/security/ Ben Hutchings
August 11, 2023 https://wiki.debian.org/LTS

Package : linux-5.10
Version : 5.10.179-5~deb10u1
CVE ID : CVE-2022-40982 CVE-2023-20569

CVE-2022-40982

Daniel Moghimi discovered Gather Data Sampling (GDS), a hardware
vulnerability for Intel CPUs which allows unprivileged speculative
access to data which was previously stored in vector registers.

This mitigation requires updated CPU microcode provided in the
intel-microcode package.

For details please refer to <https://downfall.page/> and
<https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/gather-data-sampling.html>.

CVE-2023-20569

Daniel Trujillo, Johannes Wikner and Kaveh Razavi discovered
INCEPTION, also known as Speculative Return Stack Overflow (SRSO),
a transient execution attack that leaks arbitrary data on all AMD
Zen CPUs. An attacker can mis-train the CPU BTB to predict non-
architectural CALL instructions in kernel space and use this to
control the speculative target of a subsequent kernel RET,
potentially leading to information disclosure via a speculative
side-channel.

For details please refer to
<https://comsec.ethz.ch/research/microarch/inception/> and
<https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-7005>.

For Debian 10 buster, these problems have been fixed in version
5.10.179-5~deb10u1.

We recommend that you upgrade your linux-5.10 packages.

For the detailed security status of linux-5.10 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/linux-5.10

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS