SB20240608206 - Improper locking in Linux kernel ceph

Description

This security bulletin contains information about 1 security vulnerability.

1) Improper locking (CVE-ID: CVE-2023-52732)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the ceph_update_snap_trace() and ceph_handle_snap() functions in fs/ceph/snap.c, within the register_session(), __open_session(), __do_request(), handle_reply(), ceph_mdsc_put_request(), done_closing_sessions() and mds_peer_reset() functions in fs/ceph/mds_client.c, within the ceph_zero_partial_object() function in fs/ceph/file.c, within the ceph_handle_caps() and iput() functions in fs/ceph/caps.c, within the ceph_netfs_issue_read(), writepage_nounlock() and ceph_uninline_data() functions in fs/ceph/addr.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/66ec619e4591f8350f99c5269a7ce160cccc7a7c
• https://git.kernel.org/stable/c/a68e564adcaa69b0930809fb64d9d5f7d9c32ba9
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.13
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2