Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate Add Extended Advertising Data length MGMT_OP_ADD_EXT_ADV_DATA is registered as a variable-length command, with MGMT_ADD_EXT_ADV_DATA_SIZE as the fixed header size. The handler then uses cp->adv_data_len and cp->scan_rsp_len to validate and copy cp->data, but it never checks that those bytes are part of the mgmt command payload. A short command can therefore make add_ext_adv_data() pass an out-of-bounds pointer into tlv_data_is_valid(). If the bytes beyond the command buffer are addressable, they can also be copied into the advertising instance as scan response data, where the caller can read them back via MGMT_OP_GET_ADV_INSTANCE. The trigger requires CAP_NET_ADMIN in the initial user namespace; KASAN reports an 8-byte slab-out-of-bounds read. Reject commands whose length does not match the fixed header plus both advertising data lengths before parsing cp->data.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 12410572833a283ce92fcf9679ca8a2f372097ee before 0d5104390b445e7bd664ad583837e4c04d892c9d; affected 12410572833a283ce92fcf9679ca8a2f372097ee before 14b01b9cba04e6ce82825f68fc4c4322fa4ffa43; affected 12410572833a283ce92fcf9679ca8a2f372097ee before a143ce77a5292f2c9285137433d879ce71d190a7; affected 12410572833a283ce92fcf9679ca8a2f372097ee before a6c75a3fad226ccbd8ef9110dee87c92c299f2ab; affected 12410572833a283ce92fcf9679ca8a2f372097ee before f1febe93ef075314615f970a87681d9ab86691d1; affected 12410572833a283ce92fcf9679ca8a2f372097ee before 0bc1a5a69f541859293d79db72bd7854ac48df51; affected 12410572833a283ce92fcf9679ca8a2f372097ee before d3f7d17960ed50df3a6709c5158caff989c8c905 |
| Linux / Linux | affected 5.11; unaffected 0 before 5.11; unaffected 5.15.210 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.142 through 6.6.*; unaffected 6.12.92 through 6.12.*; unaffected 6.18.34 through 6.18.*; unaffected 7.0.11 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0d5104390b445e7bd664ad583837e4c04d892c9d
- https://git.kernel.org/stable/c/14b01b9cba04e6ce82825f68fc4c4322fa4ffa43
- https://git.kernel.org/stable/c/a143ce77a5292f2c9285137433d879ce71d190a7
- https://git.kernel.org/stable/c/a6c75a3fad226ccbd8ef9110dee87c92c299f2ab
- https://git.kernel.org/stable/c/f1febe93ef075314615f970a87681d9ab86691d1
- https://git.kernel.org/stable/c/0bc1a5a69f541859293d79db72bd7854ac48df51
- https://git.kernel.org/stable/c/d3f7d17960ed50df3a6709c5158caff989c8c905
ADP enrichment
No English description supplied.
No references supplied.