Oracle Linux: CVE-2021-47624: ELSA-2024-5101: kernel security update (IMPORTANT) (Multiple Advisories)

Oracle Linux: CVE-2021-47624: ELSA-2024-5101:kernel security update (IMPORTANT) (Multiple Advisories)

Severity

2

CVSS

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

Published

07/16/2024

Created

08/20/2024

Added

08/16/2024

Modified

11/29/2024

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)

• oracle-linux-upgrade-kernel

References

• https://attackerkb.com/topics/cve-2021-47624
• CVE - 2021-47624
• ELSA-2024-5101