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Review reviewHigh

CVE-2026-46332

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: bound bootloader receive buffering cc1352_bootloader_rx() appends each serdev chunk into the fixed rx_buffer before parsing bootloader packets. The helper can keep leftover bytes between callbacks and may receive multiple packets in one callback, so a single count value is not constrained by one packet length. Check that the incoming chunk fits in the remaining receive buffer space before memcpy(). If it does not, drop the staged data and consume the bytes instead of overflowing rx_buffer.

CVSS
8
EPSS
0.19%
9.24% percentile
CISA KEV
Not listed
Published
2026.06.09
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.19%
Technical severityCVSS 8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: greybus: gb-beagleplay: bound bootloader receive buffering cc1352_bootloader_rx() appends each serdev chunk into the fixed rx_buffer before parsing bootloader packets. The helper can keep leftover bytes between callbacks and may receive multiple packets in one callback, so a single count value is not constrained by one packet length. Check that the incoming chunk fits in the remaining receive buffer space before memcpy(). If it does not, drop the staged data and consume the bytes instead of overflowing rx_buffer.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 0cf7befa3ea2e7284d8ba5b8f45a546865b09edb < 663c2728a6d0f781044431111b53a27f71027e48, >= 0cf7befa3ea2e7284d8ba5b8f45a546865b09edb < fb91d4e49fcbea0b5091394ac5b8f7d4124265c3, >= 0cf7befa3ea2e7284d8ba5b8f45a546865b09edb < 0339a746ff7cd3f9d10f565e89c99dc93191e58d, >= 0cf7befa3ea2e7284d8ba5b8f45a546865b09edb < 1214bf28965ceaf584fb20d357731264dd2e10e1, >= 6.12, >= 6.12 < 6.12.86, >= 6.13 < 6.18.27, >= 6.19 < 7.0.4
Fixed versions
6.12.86, 6.18.27, 7.0.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-120