Alma Linux: CVE-2024-36244: Moderate: kernel security update (ALSA-2024-8617)

Alma Linux: CVE-2024-36244: Moderate: kernel security update (ALSA-2024-8617)

Severity

4

CVSS

(AV:L/AC:M/Au:N/C:P/I:P/A:P)

Published

06/21/2024

Created

11/05/2024

Added

11/04/2024

Modified

11/04/2024

Description

In the Linux kernel, the following vulnerability has been resolved: net/sched: taprio: extend minimum interval restriction to entire cycle too It is possible for syzbot to side-step the restriction imposed by the blamed commit in the Fixes: tag, because the taprio UAPI permits a cycle-time different from (and potentially shorter than) the sum of entry intervals. We need one more restriction, which is that the cycle time itself must be larger than N * ETH_ZLEN bit times, where N is the number of schedule entries. This restriction needs to apply regardless of whether the cycle time came from the user or was the implicit, auto-calculated value, so we move the existing "cycle == 0" check outside the "if "(!new->cycle_time)" branch. This way covers both conditions and scenarios. Add a selftest which illustrates the issue triggered by syzbot.

Solution(s)

• alma-upgrade-bpftool
• alma-upgrade-kernel
• alma-upgrade-kernel-64k
• alma-upgrade-kernel-64k-core
• alma-upgrade-kernel-64k-debug
• alma-upgrade-kernel-64k-debug-core
• alma-upgrade-kernel-64k-debug-devel
• alma-upgrade-kernel-64k-debug-devel-matched
• alma-upgrade-kernel-64k-debug-modules
• alma-upgrade-kernel-64k-debug-modules-core
• alma-upgrade-kernel-64k-debug-modules-extra
• alma-upgrade-kernel-64k-devel
• alma-upgrade-kernel-64k-devel-matched
• alma-upgrade-kernel-64k-modules
• alma-upgrade-kernel-64k-modules-core
• alma-upgrade-kernel-64k-modules-extra
• alma-upgrade-kernel-abi-stablelists
• alma-upgrade-kernel-core
• alma-upgrade-kernel-cross-headers
• alma-upgrade-kernel-debug
• alma-upgrade-kernel-debug-core
• alma-upgrade-kernel-debug-devel
• alma-upgrade-kernel-debug-devel-matched
• alma-upgrade-kernel-debug-modules
• alma-upgrade-kernel-debug-modules-core
• alma-upgrade-kernel-debug-modules-extra
• alma-upgrade-kernel-debug-uki-virt
• alma-upgrade-kernel-devel
• alma-upgrade-kernel-devel-matched
• alma-upgrade-kernel-doc
• alma-upgrade-kernel-headers
• alma-upgrade-kernel-modules
• alma-upgrade-kernel-modules-core
• alma-upgrade-kernel-modules-extra
• alma-upgrade-kernel-rt
• alma-upgrade-kernel-rt-core
• alma-upgrade-kernel-rt-debug
• alma-upgrade-kernel-rt-debug-core
• alma-upgrade-kernel-rt-debug-devel
• alma-upgrade-kernel-rt-debug-modules
• alma-upgrade-kernel-rt-debug-modules-core
• alma-upgrade-kernel-rt-debug-modules-extra
• alma-upgrade-kernel-rt-devel
• alma-upgrade-kernel-rt-modules
• alma-upgrade-kernel-rt-modules-core
• alma-upgrade-kernel-rt-modules-extra
• alma-upgrade-kernel-tools
• alma-upgrade-kernel-tools-libs
• alma-upgrade-kernel-tools-libs-devel
• alma-upgrade-kernel-uki-virt
• alma-upgrade-kernel-zfcpdump
• alma-upgrade-kernel-zfcpdump-core
• alma-upgrade-kernel-zfcpdump-devel
• alma-upgrade-kernel-zfcpdump-devel-matched
• alma-upgrade-kernel-zfcpdump-modules
• alma-upgrade-kernel-zfcpdump-modules-core
• alma-upgrade-kernel-zfcpdump-modules-extra
• alma-upgrade-libperf
• alma-upgrade-perf
• alma-upgrade-python3-perf
• alma-upgrade-rtla
• alma-upgrade-rv

References

• https://attackerkb.com/topics/cve-2024-36244
• CVE - 2024-36244
• https://errata.almalinux.org/9/ALSA-2024-8617.html