Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate advertising TLV before type checks tlv_data_is_valid() reads each advertising data field length from data[i], then inspects data[i + 1] for managed EIR types before checking that the current field still fits inside the supplied buffer. A malformed field whose length byte is the last byte of the buffer can therefore make the parser read one byte past the advertising data. KASAN reported the following when a malformed MGMT_OP_ADD_ADVERTISING request reached that path: BUG: KASAN: vmalloc-out-of-bounds in tlv_data_is_valid() Read of size 1 Call trace: tlv_data_is_valid() add_advertising() hci_mgmt_cmd() hci_sock_sendmsg() Move the existing element-length check before any type-octet inspection so each non-empty element is proven to contain its type byte before the parser looks at data[i + 1].
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2bb36870e8cb29949ef9acec37129cd8e70f1857 before 13ad995071a06570668dd8daab3616c247c72080; affected 2bb36870e8cb29949ef9acec37129cd8e70f1857 before 06fcbd79c3c360a50f9be9d370769bbd738d0976; affected 2bb36870e8cb29949ef9acec37129cd8e70f1857 before f7093ac233c1e7f51d125534f46067772a113175; affected 2bb36870e8cb29949ef9acec37129cd8e70f1857 before 74c08e4db35a476c3462aeb65846f955be732626; affected 2bb36870e8cb29949ef9acec37129cd8e70f1857 before 18fea1cb0c2599752e908c8217490f73ddd33e00; affected 2bb36870e8cb29949ef9acec37129cd8e70f1857 before 1a3c8ffbb469859b076445af44bdfa6a711d483e; affected 2bb36870e8cb29949ef9acec37129cd8e70f1857 before 2a3f3ed9e198ae23c15859ace2f9ca6cfdc35b57; affected 2bb36870e8cb29949ef9acec37129cd8e70f1857 before de23fb62259aa01d294f77238ae3b835eb674413 |
| Linux / Linux | affected 4.9; unaffected 0 before 4.9; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.94 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/13ad995071a06570668dd8daab3616c247c72080
- https://git.kernel.org/stable/c/06fcbd79c3c360a50f9be9d370769bbd738d0976
- https://git.kernel.org/stable/c/f7093ac233c1e7f51d125534f46067772a113175
- https://git.kernel.org/stable/c/74c08e4db35a476c3462aeb65846f955be732626
- https://git.kernel.org/stable/c/18fea1cb0c2599752e908c8217490f73ddd33e00
- https://git.kernel.org/stable/c/1a3c8ffbb469859b076445af44bdfa6a711d483e
- https://git.kernel.org/stable/c/2a3f3ed9e198ae23c15859ace2f9ca6cfdc35b57
- https://git.kernel.org/stable/c/de23fb62259aa01d294f77238ae3b835eb674413
ADP enrichment
No English description supplied.