Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: HID: bpf: cast size to ssize_t when checking hid_bpf_hw_request As reported by Sashiko: If a transport driver encounters a hardware error and returns a negative error code such as -EPIPE, ret is implicitly promoted to size_t when compared against size. This causes the negative error code to evaluate as a large positive number, making the (ret > size) condition true. This silently converts the hardware error into a success return value and copies the unmodified buffer back, which could leave BPF programs operating on uninitialized or stale data. Fix this by casting size into ssize_t to return the actual negative error code.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d6efaa50af62fb0790dd1fd4e7e5506b46312510 before 8b85ef0f561039e249c3f883c5280a1449c6dbee; affected 73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1 before 97be6396817bd3b11d06239010d27902940bfaa9; affected 2b658c1c442ec1cd9eec5ead98d68662c40fe645 before f9f808227554b2c116fd07dd2328ecd74ea3f411; affected 2b658c1c442ec1cd9eec5ead98d68662c40fe645 before 3afefbfe55c2a8a0c4bdf6f4cc1f773da120027c; affected eb57dae20fdf6f3069cdc07821fa3bb46de381d7; affected 6.12.78 before 6.12.113; affected 6.18.20 before 6.18.56; affected 6.19.10 before 6.20 |
| Linux / Linux | affected 7.0; unaffected 0 before 7.0; unaffected 6.12.113 through 6.12.*; unaffected 6.18.56 through 6.18.*; unaffected 7.2.10 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.