Answer in brief
CVE-2022-50362 records a High severity (CVSS 7.8) vulnerability in dmaengine: hisilicon: Add multi-thread support for a DMA channel. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e9f08b65250d73ab70e79e194813f52b8d306784 <af12e209a9d559394d35875ba0e6c80407605888 || >=e9f08b65250d73ab70e79e194813f52b8d306784 <7cb9b20941e1fb20d22d0a2f460a3d4fa417274c || >=e9f08b65250d73ab70e79e194813f52b8d306784 <d4a8ec5cc7ff5d442bd49a44f26d74b2021ba4c8 || >=e9f08b65250d73ab70e79e194813f52b8d306784 <f4cee0b385cd0348e071d4d80c4c13cfe547c70d || >=e9f08b65250d73ab70e79e194813f52b8d306784 <2cbb95883c990d0002a77e13d3278913ab26ad79 | af12e209a9d559394d35875ba0e6c80407605888, 7cb9b20941e1fb20d22d0a2f460a3d4fa417274c, d4a8ec5cc7ff5d442bd49a44f26d74b2021ba4c8, f4cee0b385cd0348e071d4d80c4c13cfe547c70d, 2cbb95883c990d0002a77e13d3278913ab26ad79 |
| Linux/Linuxgeneric | 5.6 | Not reported |
Published upstream
Sep 17, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: dmaengine: hisilicon: Add multi-thread support for a DMA channel When we get a DMA channel and try to use it in multiple threads it will cause oops and hanging the system. % echo 100 > /sys/module/dmatest/parameters/threads_per_chan % echo 100 > /sys/module/dmatest/parameters/iterations % echo 1 > /sys/module/dmatest/parameters/run [383493.327077] Unable to handle kernel paging request at virtual address dead000000000108 [383493.335103] Mem abort info: [383493.335103] ESR = 0x96000044 [383493.335105] EC = 0x25: DABT (current EL), IL = 32 bits [383493.335107] SET = 0, FnV = 0 [383493.335108] EA = 0, S1PTW = 0 [383493.335109] FSC = 0x04: level 0 translation fault [383493.335110] Data abort info: [383493.335111] ISV = 0, ISS = 0x00000044 [383493.364739] CM = 0, WnR = 1 [383493.367793] [dead000000000108] address between user and kernel address ranges [383493.375021] Internal error: Oops: 96000044 [#1] PREEMPT SMP [383493.437574] CPU: 63 PID: 27895 Comm: dma0chan0-copy2 Kdump: loaded Tainted: GO 5.17.0-rc4+ #2 [383493.457851] pstate: 204000c9 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [383493.465331] pc : vchan_tx_submit+0x64/0xa0 [383493.469957] lr : vchan_tx_submit+0x34/0xa0 This occurs because the transmission timed out, and that's due to data race. Each thread rewrite channels's descriptor as soon as device_issue_pending is called. It leads to the situation that the driver thinks that it uses the right descriptor in interrupt handler while channels's descriptor has been changed by other thread. The descriptor which in fact reported interrupt will not be handled any more, as well as its tx->callback. That's why timeout reports. With current fixes channels' descriptor changes it's value only when it has been used. A new descriptor is acquired from vc->desc_issued queue that is already filled with descriptors that are ready to be sent. Threads have no direct access to DMA channel descriptor. In case of channel's descriptor is busy, try to submit to HW again when a descriptor is completed. In this case, vc->desc_issued may be empty when hisi_dma_start_transfer is called, so delete error reporting on this. Now it is just possible to queue a descriptor for further processing.
Quoted source text, attributed separately from HOL analysis.