CVE-2024-50147— net/mlx5: Fix command bitmask initialization
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I. Basic Information for CVE-2024-50147
Vulnerability Information
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Vulnerability Title
net/mlx5: Fix command bitmask initialization
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix command bitmask initialization Command bitmask have a dedicated bit for MANAGE_PAGES command, this bit isn't Initialize during command bitmask Initialization, only during MANAGE_PAGES. In addition, mlx5_cmd_trigger_completions() is trying to trigger completion for MANAGE_PAGES command as well. Hence, in case health error occurred before any MANAGE_PAGES command have been invoke (for example, during mlx5_enable_hca()), mlx5_cmd_trigger_completions() will try to trigger completion for MANAGE_PAGES command, which will result in null-ptr-deref error.[1] Fix it by Initialize command bitmask correctly. While at it, re-write the code for better understanding. [1] BUG: KASAN: null-ptr-deref in mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] Write of size 4 at addr 0000000000000214 by task kworker/u96:2/12078 CPU: 10 PID: 12078 Comm: kworker/u96:2 Not tainted 6.9.0-rc2_for_upstream_debug_2024_04_07_19_01 #1 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 Workqueue: mlx5_health0000:08:00.0 mlx5_fw_fatal_reporter_err_work [mlx5_core] Call Trace: <TASK> dump_stack_lvl+0x7e/0xc0 kasan_report+0xb9/0xf0 kasan_check_range+0xec/0x190 mlx5_cmd_trigger_completions+0x1db/0x600 [mlx5_core] mlx5_cmd_flush+0x94/0x240 [mlx5_core] enter_error_state+0x6c/0xd0 [mlx5_core] mlx5_fw_fatal_reporter_err_work+0xf3/0x480 [mlx5_core] process_one_work+0x787/0x1490 ? lockdep_hardirqs_on_prepare+0x400/0x400 ? pwq_dec_nr_in_flight+0xda0/0xda0 ? assign_work+0x168/0x240 worker_thread+0x586/0xd30 ? rescuer_thread+0xae0/0xae0 kthread+0x2df/0x3b0 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x2d/0x70 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork_asm+0x11/0x20 </TASK>
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在初始化命令掩码时未正确初始化MANAGE_PAGES命令的位。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-50147
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Same Patch Batch · Linux · 2024-11-07 · 34 CVEs total
| CVE-2024-50165 | bpf: Preserve param->string when parsing mount options | |
| CVE-2024-50157 | RDMA/bnxt_re: Avoid CPU lockups due fifo occupancy check loop | |
| CVE-2024-50158 | RDMA/bnxt_re: Fix out of bound check | |
| CVE-2024-50159 | firmware: arm_scmi: Fix the double free in scmi_debugfs_common_setup() | |
| CVE-2024-50160 | ALSA: hda/cs8409: Fix possible NULL dereference | |
| CVE-2024-50161 | bpf: Check the remaining info_cnt before repeating btf fields | |
| CVE-2024-50162 | bpf: devmap: provide rxq after redirect | |
| CVE-2024-50163 | bpf: Make sure internal and UAPI bpf_redirect flags don't overlap | |
| CVE-2024-50164 | bpf: Fix overloading of MEM_UNINIT's meaning | |
| CVE-2024-50156 | drm/msm: Avoid NULL dereference in msm_disp_state_print_regs() | |
| CVE-2024-50166 | fsl/fman: Fix refcount handling of fman-related devices | |
| CVE-2024-50167 | be2net: fix potential memory leak in be_xmit() | |
| CVE-2024-50168 | net/sun3_82586: fix potential memory leak in sun3_82586_send_packet() | |
| CVE-2024-50169 | vsock: Update rx_bytes on read_skb() | |
| CVE-2024-50170 | net: bcmasp: fix potential memory leak in bcmasp_xmit() | |
| CVE-2024-50171 | net: systemport: fix potential memory leak in bcm_sysport_xmit() | |
| CVE-2024-50172 | RDMA/bnxt_re: Fix a possible memory leak | |
| CVE-2024-50139 | KVM: arm64: Fix shift-out-of-bounds bug | |
| CVE-2024-50155 | netdevsim: use cond_resched() in nsim_dev_trap_report_work() | |
| CVE-2024-50154 | tcp/dccp: Don't use timer_pending() in reqsk_queue_unlink(). |
Showing top 20 of 34 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2024-50147
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