CVE-2023-28866 — In the Linux kernel through 6

In the Linux kernel through 6.2.8, net/bluetooth/hci_sync.c allows out-of-bounds access because amp_init1[] and amp_init2[] are supposed to have an intentionally invalid element, but do not.

01What is this vulnerability?

In the Linux kernel through 6.2.8, net/bluetooth/hci_sync.c allows out-of-bounds access because amp_init1[] and amp_init2[] are supposed to have an intentionally invalid element, but do not.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-03-27T00:00:00.000Z
• Last modified: 2025-05-05T16:02:01.482Z

09References

• patchwork.kernel.org — https://patchwork.kernel.org/project/bluetooth/patch/20230322232543.3079578-1-lu…
• lore.kernel.org — https://lore.kernel.org/lkml/20230321015018.1759683-1-iam%40sung-woo.kim/
• git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/com…