CVE-2026-53254
No CVSS score published · EPSS: 0.0018 (7.8 percentile)
Source data as of:
At a glance
- Severity
- No CVSS score published
- CVSS
- No CVSS score in the NVD record
- EPSS
- 0.0018 (7.8 percentile) · FIRST.org
- CISA KEV
- No
- Published
- 2026-06-25 · Modified: 2026-06-25
- References
- Jump to references (7)
CVSS / EPSS / KEV
Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources
Description
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.
References
Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.
- Reference https://git.kernel.org/stable/c/08b9c1fbe78f4ad3f6250c6541cfaabdbeb81997
- Reference https://git.kernel.org/stable/c/0d637136ce89f9a2309b2c3502402ce400dab0ef
- Reference https://git.kernel.org/stable/c/1b070ac9e99c2c2c3a8112943ca98ab6fca7f10c
- Reference https://git.kernel.org/stable/c/23882b828c3c8c51d0c946446a396b10abb3b16b
- Reference https://git.kernel.org/stable/c/3eabc6d47a0ad22b053329997aaf0ec1e581e392
- Reference https://git.kernel.org/stable/c/7c15c7c2878957cbfed93bcc29c13fdace464254
- Reference https://git.kernel.org/stable/c/98377e6b1a1a56561ec66a181573ea2b61b2079e