ELA-947-1 linux-5.10 security update

linux kernel update

2023-09-20
Packagelinux-5.10
Version5.10.179-5~deb9u1 (stretch)
Related CVEs 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 9 stretch, these problems have been fixed in version 5.10.179-5~deb9u1.

We recommend that you upgrade your linux-5.10 packages.

Further information about Extended LTS security advisories can be found in the dedicated section of our website.