Tracker / CVE-2026-53254
CVE-2026-53254
High 8.1
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: validate skb length in MCC handlers The RFCOMM MCC handlers cast skb->data to protocol-specific structs without validating skb->len first. A malicious remote device can send truncated MCC frames and trigger out-of-bounds reads in these handlers. Fix this by using skb_pull_data() to validate and access the required data before dereferencing it. rfcomm_recv_rpn() requires special handling since ETSI TS 07.10 allows 1-byte RPN requests. Handle this by validating only the DLCI byte first, and validating the full struct only when len > 1.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 2.6.12.1 → 5.15.210 |
| linux | linux_kernel · 5.16 → 6.1.176 |
| linux | linux_kernel · 6.13 → 6.18.36 |
| linux | linux_kernel · 6.19 → 7.0.13 |
| linux | linux_kernel · 6.2 → 6.6.143 |
| linux | linux_kernel · 6.7 → 6.12.94 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.