Alma Linux: CVE-2024-42082: Moderate: kernel security update (ALSA-2024-6567)

Alma Linux: CVE-2024-42082: Moderate: kernel security update (ALSA-2024-6567)

Severity

5

CVSS

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

Published

07/29/2024

Created

11/05/2024

Added

11/04/2024

Modified

01/28/2025

Description

In the Linux kernel, the following vulnerability has been resolved: xdp: Remove WARN() from __xdp_reg_mem_model() syzkaller reports a warning in __xdp_reg_mem_model(). The warning occurs only if __mem_id_init_hash_table() returns an error. It returns the error in two cases: 1. memory allocation fails; 2. rhashtable_init() fails when some fields of rhashtable_params struct are not initialized properly. The second case cannot happen since there is a static const rhashtable_params struct with valid fields. So, warning is only triggered when there is a problem with memory allocation. Thus, there is no sense in using WARN() to handle this error and it can be safely removed. WARNING: CPU: 0 PID: 5065 at net/core/xdp.c:299 __xdp_reg_mem_model+0x2d9/0x650 net/core/xdp.c:299 CPU: 0 PID: 5065 Comm: syz-executor883 Not tainted 6.8.0-syzkaller-05271-gf99c5f563c17 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__xdp_reg_mem_model+0x2d9/0x650 net/core/xdp.c:299 Call Trace: xdp_reg_mem_model+0x22/0x40 net/core/xdp.c:344 xdp_test_run_setup net/bpf/test_run.c:188 [inline] bpf_test_run_xdp_live+0x365/0x1e90 net/bpf/test_run.c:377 bpf_prog_test_run_xdp+0x813/0x11b0 net/bpf/test_run.c:1267 bpf_prog_test_run+0x33a/0x3b0 kernel/bpf/syscall.c:4240 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5649 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline] __se_sys_bpf kernel/bpf/syscall.c:5736 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Found by Linux Verification Center (linuxtesting.org) with syzkaller.

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-2024-42082
• CVE - 2024-42082
• https://errata.almalinux.org/9/ALSA-2024-6567.html