Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
For CPUs affected to ITS (Indirect Target Selection), to fully mitigate the vulnerability it is also necessary to update the intel-microcode packages released in ELA-1425-1.
For details on the Indirect Target Selection (ITS) vulnerability please refer to the VUSec article and the Intel one.
For Debian 10 buster, these problems have been fixed in version 6.1.140-1~deb10u1.
For Debian 9 stretch, these problems have been fixed in version 6.1.140-1~deb9u1.
We recommend that you upgrade your linux-6.1 packages.
Further information about Extended LTS security advisories can be found in the dedicated section of our website.