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Vulnerability record · CVE-2026-43048 · published 1 May 2026

CVE-2026-43048: Linux kernel out-of-bounds read vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: HID: core: Mitigate potential OOB by removing bogus memset() The memset() in hid_report_raw_event() has the good intention of clearing out bogus data by zeroing the area from the end of the incoming data string to the assumed end of the buffer. However, as we have previously seen, doing so can easily result in OOB reads and writes in the subsequent thread of execution. The current suggestion from one of the HID maintainers is to remove the memset() and simply return if the incoming event buffer size is not large enough to fill the associated report. Suggested-by Benjamin Tissoires <[email protected]> [bentiss: changed the return value]

8.8 CVSS 3.1 High EPSS 0.40% · top 68.7% CWE-125 · Out-of-bounds read
8.8CVSS 3.1 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: HID: core: Mitigate potential OOB by removing bogus memset() The memset() in hid_report_raw_event() has the good intention of clearing out bogus data by zeroing the area from the end of the incoming data string to the assumed end of the buffer. However, as we have previously seen, doing so can easily result in OOB reads and writes in the subsequent thread of execution. The current suggestion from one of the HID maintainers is to remove the memset() and simply return if the incoming event buffer size is not large enough to fill the associated report. Suggested-by Benjamin Tissoires <[email protected]> [bentiss: changed the return value]

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/0a3fe972a7cb1404f693d6f1711f32bc1d244b1c Patch
https://git.kernel.org/stable/c/8f71034649738fdeb6859b8d6cddf132024fac06 Patch
https://git.kernel.org/stable/c/bd6e1d0230cca9575f5d118148f51e2a56b5373f Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43048), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.