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CVE-2022-49500

wl1251: dynamically allocate memory used for DMA

High8.8EPSS 0.27%
Published
Updated
Reserved
Assigned by
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: wl1251: dynamically allocate memory used for DMA With introduction of vmap'ed stacks, stack parameters can no longer be used for DMA and now leads to kernel panic. It happens at several places for the wl1251 (e.g. when accessed through SDIO) making it unuseable on e.g. the OpenPandora. We solve this by allocating temporary buffers or use wl1251_read32(). Tested on v5.18-rc5 with OpenPandora.

Scores

CVSS scores of CVE-2022-49500, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.27% · top 81% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Affected products

  • Linux · Linux

    • affected a1c510d0adc604bb143c86052bc5be48cbcfa17c – < da03bbfbf5acd1ab0b074617e865ad1e8a5779ef
    • affected a1c510d0adc604bb143c86052bc5be48cbcfa17c – < 454744754cbf2c21b3fc7344e46e10bee2768094

  • Linux · Linux

    • affected 5.18
    • unaffected < 5.18
    • unaffected 5.18.3 – ≤ 5.18.*
    • unaffected 5.19 – ≤ *

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .