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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7c15c7c2878957cbfed93bcc29c13fdace464254affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 0d637136ce89f9a2309b2c3502402ce400dab0efaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 98377e6b1a1a56561ec66a181573ea2b61b2079eaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 1b070ac9e99c2c2c3a8112943ca98ab6fca7f10caffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3eabc6d47a0ad22b053329997aaf0ec1e581e392affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 08b9c1fbe78f4ad3f6250c6541cfaabdbeb81997affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 23882b828c3c8c51d0c946446a396b10abb3b16baffected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.15.210 to ≤ 5.15.*unaffected6.1.176 to ≤ 6.1.*unaffected6.6.143 to ≤ 6.6.*unaffected6.12.94 to ≤ 6.12.*unaffected6.18.36 to ≤ 6.18.*unaffected7.0.13 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/7c15c7c2878957cbfed93bcc29c13fdace464254 ↗
- https://git.kernel.org/stable/c/0d637136ce89f9a2309b2c3502402ce400dab0ef ↗
- https://git.kernel.org/stable/c/98377e6b1a1a56561ec66a181573ea2b61b2079e ↗
- https://git.kernel.org/stable/c/1b070ac9e99c2c2c3a8112943ca98ab6fca7f10c ↗
- https://git.kernel.org/stable/c/3eabc6d47a0ad22b053329997aaf0ec1e581e392 ↗
- https://git.kernel.org/stable/c/08b9c1fbe78f4ad3f6250c6541cfaabdbeb81997 ↗
- https://git.kernel.org/stable/c/23882b828c3c8c51d0c946446a396b10abb3b16b ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗