CVE-2021-46931— net/mlx5e: Wrap the tx reporter dump callback to extract the sq
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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，该漏洞源于函数 mlx5e_tx_reporter_dump_sq() 将其 void 参数转换为 struct mlx5e_txqsq ，但在 TX-timeout-recovery 流程中，参数实际上是 struct mlx5e_tx_timeout_ctx * 类型。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting InterpreterAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 5f29458b77d51c104554575b73184c243930aa87< 73665165b64a8f3c5b3534009a69be55bb744f05 |
affected |
5f29458b77d51c104554575b73184c243930aa87< 07f13d58a8ecc3baf9a488588fb38c5cb0db484f |
affected | ||
5f29458b77d51c104554575b73184c243930aa87< 918fc3855a6507a200e9cf22c20be852c0982687 |
affected | ||
5.7 |
affected | ||
< 5.7 |
unaffected | ||
5.10.90≤ 5.10.* |
unaffected | ||
5.15.13≤ 5.15.* |
unaffected | ||
5.16≤ * |
unaffected |
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2021-46931
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
net/mlx5e: Wrap the tx reporter dump callback to extract the sq
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Wrap the tx reporter dump callback to extract the sq
Function mlx5e_tx_reporter_dump_sq() casts its void * argument to struct
mlx5e_txqsq *, but in TX-timeout-recovery flow the argument is actually
of type struct mlx5e_tx_timeout_ctx *.
mlx5_core 0000:08:00.1 enp8s0f1: TX timeout detected
mlx5_core 0000:08:00.1 enp8s0f1: TX timeout on queue: 1, SQ: 0x11ec, CQ: 0x146d, SQ Cons: 0x0 SQ Prod: 0x1, usecs since last trans: 21565000
BUG: stack guard page was hit at 0000000093f1a2de (stack is 00000000b66ea0dc..000000004d932dae)
kernel stack overflow (page fault): 0000 [#1] SMP NOPTI
CPU: 5 PID: 95 Comm: kworker/u20:1 Tainted: G W OE 5.13.0_mlnx #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
Workqueue: mlx5e mlx5e_tx_timeout_work [mlx5_core]
RIP: 0010:mlx5e_tx_reporter_dump_sq+0xd3/0x180
[mlx5_core]
Call Trace:
mlx5e_tx_reporter_dump+0x43/0x1c0 [mlx5_core]
devlink_health_do_dump.part.91+0x71/0xd0
devlink_health_report+0x157/0x1b0
mlx5e_reporter_tx_timeout+0xb9/0xf0 [mlx5_core]
? mlx5e_tx_reporter_err_cqe_recover+0x1d0/0x1d0
[mlx5_core]
? mlx5e_health_queue_dump+0xd0/0xd0 [mlx5_core]
? update_load_avg+0x19b/0x550
? set_next_entity+0x72/0x80
? pick_next_task_fair+0x227/0x340
? finish_task_switch+0xa2/0x280
mlx5e_tx_timeout_work+0x83/0xb0 [mlx5_core]
process_one_work+0x1de/0x3a0
worker_thread+0x2d/0x3c0
? process_one_work+0x3a0/0x3a0
kthread+0x115/0x130
? kthread_park+0x90/0x90
ret_from_fork+0x1f/0x30
--[ end trace 51ccabea504edaff ]---
RIP: 0010:mlx5e_tx_reporter_dump_sq+0xd3/0x180
PKRU: 55555554
Kernel panic - not syncing: Fatal exception
Kernel Offset: disabled
end Kernel panic - not syncing: Fatal exception
To fix this bug add a wrapper for mlx5e_tx_reporter_dump_sq() which
extracts the sq from struct mlx5e_tx_timeout_ctx and set it as the
TX-timeout-recovery flow dump callback.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于函数 mlx5e_tx_reporter_dump_sq() 将其 void * 参数转换为 struct mlx5e_txqsq *，但在 TX-timeout-recovery 流程中，参数实际上是 struct mlx5e_tx_timeout_ctx * 类型。
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-2021-46931
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-46931
请登录查看更多情报信息。
Other References for CVE-2021-46931 (3)
Same Patch Batch · Linux · 2024-02-27 · 67 CVEs total
| CVE-2021-46911 | 9.8 CRITICAL | ch_ktls: Fix kernel panic |
| CVE-2021-46955 | 8.2 HIGH | openvswitch: fix stack OOB read while fragmenting IPv4 packets |
| CVE-2021-46963 | 7.8 HIGH | scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand() |
| CVE-2021-46925 | 7.8 HIGH | net/smc: fix kernel panic caused by race of smc_sock |
| CVE-2021-46929 | 7.8 HIGH | sctp: use call_rcu to free endpoint |
| CVE-2021-46913 | 7.8 HIGH | netfilter: nftables: clone set element expression template |
| CVE-2021-46973 | 7.8 HIGH | net: qrtr: Avoid potential use after free in MHI send |
| CVE-2021-46936 | 7.8 HIGH | net: fix use-after-free in tw_timer_handler |
| CVE-2021-46958 | 7.8 HIGH | btrfs: fix race between transaction aborts and fsyncs leading to use-after-free |
| CVE-2021-46969 | 7.8 HIGH | bus: mhi: core: Fix invalid error returning in mhi_queue |
| CVE-2021-46933 | 7.8 HIGH | usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear. |
| CVE-2021-46967 | 7.8 HIGH | vhost-vdpa: fix vm_flags for virtqueue doorbell mapping |
| CVE-2021-46921 | 7.8 HIGH | locking/qrwlock: Fix ordering in queued_write_lock_slowpath() |
| CVE-2021-46922 | 7.8 HIGH | KEYS: trusted: Fix TPM reservation for seal/unseal |
| CVE-2021-46948 | 7.5 HIGH | sfc: farch: fix TX queue lookup in TX event handling |
| CVE-2021-46960 | 7.5 HIGH | cifs: Return correct error code from smb2_get_enc_key |
| CVE-2021-46912 | 7.3 HIGH | net: Make tcp_allowed_congestion_control readonly in non-init netns |
| CVE-2021-46908 | 7.1 HIGH | bpf: Use correct permission flag for mixed signed bounds arithmetic |
| CVE-2021-46974 | 7.1 HIGH | bpf: Fix masking negation logic upon negative dst register |
| CVE-2021-46910 | 7.0 HIGH | ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUG_KMAP_LOCAL is enabled |
Showing top 20 of 67 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
Same vendor: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
V. Comments for CVE-2021-46931
No comments yet