Package : linux
CVE ID : CVE-2023-0386 CVE-2023-31436 CVE-2023-32233
Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or information
It was discovered that under certain conditions the overlayfs
filesystem implementation did not properly handle copy up
operations. A local user permitted to mount overlay mounts in user
namespaces can take advantage of this flaw for local privilege
Gwangun Jung reported a a flaw causing heap out-of-bounds read/write
errors in the traffic control subsystem for the Quick Fair Queueing
scheduler (QFQ) which may result in information leak, denial of
service or privilege escalation.
Patryk Sondej and Piotr Krysiuk discovered a use-after-free flaw in
the Netfilter nf_tables implementation when processing batch
requests, which may result in local privilege escalation for a user
with the CAP_NET_ADMIN capability in any user or network namespace.
For the stable distribution (bullseye), these problems have been fixed in version 5.10.179-1.
We recommend that you upgrade your linux packages.