[SECURITY] [DLA 3446-1] linux-5.10 security update

Debian LTS Advisory DLA-3446-1 [email protected]
https://www.debian.org/lts/security/ Ben Hutchings
June 05, 2023 https://wiki.debian.org/LTS

Package : linux-5.10
Version : 5.10.179-1~deb10u1
CVE ID : CVE-2023-0386 CVE-2023-31436 CVE-2023-32233
Debian Bug : 1035779

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or information
leaks.

CVE-2023-0386

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
escalation.

CVE-2023-31436

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.

CVE-2023-32233

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 Debian 10 buster, these problems have been fixed in version
5.10.179-1~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
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