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CVE-2021-46931— net/mlx5e: Wrap the tx reporter dump callback to extract the sq

EPSS 0.02% · P5
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I. Basic Information for CVE-2021-46931

Vulnerability Information
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Vulnerability Title
net/mlx5e: Wrap the tx reporter dump callback to extract the sq
Source: NVD (National Vulnerability Database)
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: 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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 5f29458b77d51c104554575b73184c243930aa87 ~ 73665165b64a8f3c5b3534009a69be55bb744f05 -
LinuxLinux 5.7 -

II. Public POCs for CVE-2021-46931

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III. Intelligence Information for CVE-2021-46931

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Same Patch Batch · Linux · 2024-02-27 · 67 CVEs total

CVE-2021-46951tpm: efi: Use local variable for calculating final log size
CVE-2021-46971perf/core: Fix unconditional security_locked_down() call
CVE-2021-46970bus: mhi: pci_generic: Remove WQ_MEM_RECLAIM flag from state workqueue
CVE-2021-46969bus: mhi: core: Fix invalid error returning in mhi_queue
CVE-2021-46957riscv/kprobe: fix kernel panic when invoking sys_read traced by kprobe
CVE-2021-46956virtiofs: fix memory leak in virtio_fs_probe()
CVE-2021-46955openvswitch: fix stack OOB read while fragmenting IPv4 packets
CVE-2021-46954net/sched: sch_frag: fix stack OOB read while fragmenting IPv4 packets
CVE-2021-46953ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
CVE-2021-46952NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds
CVE-2021-46958btrfs: fix race between transaction aborts and fsyncs leading to use-after-free
CVE-2021-46950md/raid1: properly indicate failure when ending a failed write request
CVE-2021-46949sfc: farch: fix TX queue lookup in TX flush done handling
CVE-2021-46948sfc: farch: fix TX queue lookup in TX event handling
CVE-2021-46947sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues
CVE-2021-46945ext4: always panic when errors=panic is specified
CVE-2021-46944media: staging/intel-ipu3: Fix memory leak in imu_fmt
CVE-2021-46943media: staging/intel-ipu3: Fix set_fmt error handling
CVE-2021-46942io_uring: fix shared sqpoll cancellation hangs
CVE-2021-46941usb: dwc3: core: Do core softreset when switch mode

Showing top 20 of 67 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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