Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: reject overlapping data areas in SMB2 responses Commit 53b7c271f06b ("smb: client: restrict implied bcc[0] exemption to responses without data area") restricted the implied bcc[0] length exception to responses without a data area. However, the overlap handling in __smb2_calc_size() clears data_length, which can make an invalid response appear to have no data area and so qualify for the exception. Track data area overlap separately and reject such responses before applying the length compatibility exceptions.
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
31c6312608c60b72a1feb99a5afb680645a3e8a3 to < 445ece263131780dee273d727a4d6f11934feec7affected573e502d14714d2947e22e7eff40ec20a6a44a42 to < 36bfa52459e45c0d5b668de2f1c91f6dc5c67775affected419ec1b604d7fb60c10aec2dc062371f9fcd4940 to < 4a9d2657d3e05f6ed09c148cb127b4e58702275faffectedceb875a375dedbf51c9425c1d13a2d7a8435c08c to < fdafa1e68dc75045b7b617e6e7d2854950804d83affected6e9d10f62773b99bd927940fd9cbdfe7207e23ff to < 57cba95f0e97c6f6e45e6731da30aff091bd7460affected53b7c271f06be4dd5cfc8c6ef552a8355c891a7f to < 8986c932905ea508d66da421eb2eb6e676ace1feaffected8d0bbc78046d264bbf6a574ea6f9072258a43e35affectedb6a381c01e2ac98a48e32ac0f2a45bbadd9e26b0affected5.10.261 to < 5.11affected5.15.212 to < 5.16affected
Linux Linux
Default version status: unaffected
References
- https://git.kernel.org/stable/c/445ece263131780dee273d727a4d6f11934feec7 ↗
- https://git.kernel.org/stable/c/36bfa52459e45c0d5b668de2f1c91f6dc5c67775 ↗
- https://git.kernel.org/stable/c/4a9d2657d3e05f6ed09c148cb127b4e58702275f ↗
- https://git.kernel.org/stable/c/fdafa1e68dc75045b7b617e6e7d2854950804d83 ↗
- https://git.kernel.org/stable/c/57cba95f0e97c6f6e45e6731da30aff091bd7460 ↗
- https://git.kernel.org/stable/c/8986c932905ea508d66da421eb2eb6e676ace1fe ↗