PT-2022-7469 · Linux+3 · Linux Kernel+3
Published
2022-02-14
·
Updated
2026-02-24
·
CVE-2022-48853
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The vulnerability is related to an information leak in the swiotlb component of the Linux kernel, which can occur when using DMA FROM DEVICE. The issue arises when a TEST UNIT READY command is issued via the SG IO interface, and the device does not read from the device, but the buffer is still prepared as if a DMA FROM DEVICE type of situation occurred. This can lead to the exposure of previous IO data. The swiotlb should be transparent and not affect the outcome, but in this case, it can cause an information leak.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Initialization
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Red Os
Suse