Rocky Linux: CVE-2021-47624: kernel-rt (Multiple Advisories)

Rocky Linux: CVE-2021-47624: kernel-rt (Multiple Advisories)

Severity

6

CVSS

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

Published

07/16/2024

Created

08/23/2024

Added

08/22/2024

Modified

01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change The refcount leak issues take place in an error handling path. When the 3rd argument buf doesn't match with "offline", "online" or "remove", the function simply returns -EINVAL and forgets to decrease the reference count of a rpc_xprt object and a rpc_xprt_switch object increased by rpc_sysfs_xprt_kobj_get_xprt() and rpc_sysfs_xprt_kobj_get_xprt_switch(), causing reference count leaks of both unused objects. Fix this issue by jumping to the error handling path labelled with out_put when buf matches none of "offline", "online" or "remove".

Solution(s)

• rocky-upgrade-bpftool
• rocky-upgrade-bpftool-debuginfo
• rocky-upgrade-kernel
• rocky-upgrade-kernel-core
• rocky-upgrade-kernel-cross-headers
• rocky-upgrade-kernel-debug
• rocky-upgrade-kernel-debug-core
• rocky-upgrade-kernel-debug-debuginfo
• rocky-upgrade-kernel-debug-devel
• rocky-upgrade-kernel-debug-modules
• rocky-upgrade-kernel-debug-modules-extra
• rocky-upgrade-kernel-debuginfo
• rocky-upgrade-kernel-debuginfo-common-x86_64
• rocky-upgrade-kernel-devel
• rocky-upgrade-kernel-headers
• rocky-upgrade-kernel-modules
• rocky-upgrade-kernel-modules-extra
• rocky-upgrade-kernel-rt
• rocky-upgrade-kernel-rt-core
• rocky-upgrade-kernel-rt-debug
• rocky-upgrade-kernel-rt-debug-core
• rocky-upgrade-kernel-rt-debug-debuginfo
• rocky-upgrade-kernel-rt-debug-devel
• rocky-upgrade-kernel-rt-debug-kvm
• rocky-upgrade-kernel-rt-debug-modules
• rocky-upgrade-kernel-rt-debug-modules-extra
• rocky-upgrade-kernel-rt-debuginfo
• rocky-upgrade-kernel-rt-debuginfo-common-x86_64
• rocky-upgrade-kernel-rt-devel
• rocky-upgrade-kernel-rt-kvm
• rocky-upgrade-kernel-rt-modules
• rocky-upgrade-kernel-rt-modules-extra
• rocky-upgrade-kernel-tools
• rocky-upgrade-kernel-tools-debuginfo
• rocky-upgrade-kernel-tools-libs
• rocky-upgrade-kernel-tools-libs-devel
• rocky-upgrade-perf
• rocky-upgrade-perf-debuginfo
• rocky-upgrade-python3-perf
• rocky-upgrade-python3-perf-debuginfo

References

• https://attackerkb.com/topics/cve-2021-47624
• CVE - 2021-47624
• https://errata.rockylinux.org/RLSA-2024:5101
• https://errata.rockylinux.org/RLSA-2024:5102