| Description: | Summary:
The remote host is missing an update for the Debian 'linux' package(s) announced via the DSA-5461-1 advisory.
Vulnerability Insight:
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
CVE-2023-3390
A use-after-free flaw in the netfilter subsystem caused by incorrect error path handling may result in denial of service or privilege escalation.
CVE-2023-3610
A use-after-free flaw in the netfilter subsystem caused by incorrect refcount handling on the table and chain destroy path may result in denial of service or privilege escalation.
CVE-2023-20593
Tavis Ormandy discovered that under specific microarchitectural circumstances, a vector register in AMD Zen 2 CPUs may not be written to 0 correctly. This flaw allows an attacker to leak sensitive information across concurrent processes, hyper threads and virtualized guests.
For details please refer to [link moved to references] and [link moved to references]
This issue can also be mitigated by a microcode update through the amd64-microcode package or a system firmware (BIOS/UEFI) update. However, the initial microcode release by AMD only provides updates for second generation EPYC CPUs. Various Ryzen CPUs are also affected, but no updates are available yet.
For the oldstable distribution (bullseye), these problems have been fixed in version 5.10.179-3.
We recommend that you upgrade your linux packages.
For the detailed security status of linux please refer to its security tracker page at: [link moved to references]
Affected Software/OS:
'linux' package(s) on Debian 11.
Solution:
Please install the updated package(s).
CVSS Score:
6.8
CVSS Vector:
AV:L/AC:L/Au:S/C:C/I:C/A:C
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