SB2024082786 - SUSE update for the Linux Kernel (Live Patch 42 for SLE 15 SP2)

Description

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2021-47378)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the nvme_rdma_free_queue(), nvme_rdma_conn_established(), nvme_rdma_route_resolved() and nvme_rdma_cm_handler() functions in drivers/nvme/host/rdma.c. A local user can escalate privileges on the system.

2) Use-after-free (CVE-ID: CVE-2021-47402)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the fl_walk() function in net/sched/cls_flower.c. A local user can escalate privileges on the system.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2024/suse-su-20243023-1/