Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: HID: core: clamp report_size in s32ton() to avoid undefined shift s32ton() shifts by n-1 where n is the field's report_size, a value that comes directly from a HID device. The HID parser bounds report_size only to <= 256, so a broken HID device can supply a report descriptor with a wide field that triggers shift exponents up to 256 on a 32-bit type when an output report is built via hid_output_field() or hid_set_field(). Commit ec61b41918587 ("HID: core: fix shift-out-of-bounds in hid_report_raw_event") added the same n > 32 clamp to the function snto32(), but s32ton() was never given the same fix as I guess syzbot hadn't figured out how to fuzz a device the same way. Fix this up by just clamping the max value of n, just like snto32() does.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected dde5845a529ff753364a6d1aea61180946270bfa before 76ad02854a30c394e0c076e6e6bed0a388573a94; affected dde5845a529ff753364a6d1aea61180946270bfa before eb415ddaf25e09ddb8fe5736a70c9de2e6462534; affected dde5845a529ff753364a6d1aea61180946270bfa before 0ab048dbdb1daacf17d52e9252297eb6e1298e49; affected dde5845a529ff753364a6d1aea61180946270bfa before 932ae5309e53561197aa7d1606c7cf63af10e24f; affected dde5845a529ff753364a6d1aea61180946270bfa before 58386f00af710922cafb0fb69211497beddfaa95; affected dde5845a529ff753364a6d1aea61180946270bfa before 8a8333237f1f5caab8d4c3d2c2e7578c4263a97f; affected dde5845a529ff753364a6d1aea61180946270bfa before ea363a34086ddb4231adc581a7f36c39ec154bfc; affected dde5845a529ff753364a6d1aea61180946270bfa before 97014719bb8fccb1ffcbbc299e84b1f11b114195; affected dde5845a529ff753364a6d1aea61180946270bfa before 69c02ffde6ed4d535fa4e693a9e572729cad3d0d |
| Linux / Linux | affected 2.6.20; unaffected 0 before 2.6.20; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.83 through 6.12.*; unaffected 6.18.24 through 6.18.*; unaffected 6.19.14 through 6.19.*; unaffected 7.0.1 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/76ad02854a30c394e0c076e6e6bed0a388573a94
- https://git.kernel.org/stable/c/eb415ddaf25e09ddb8fe5736a70c9de2e6462534
- https://git.kernel.org/stable/c/0ab048dbdb1daacf17d52e9252297eb6e1298e49
- https://git.kernel.org/stable/c/932ae5309e53561197aa7d1606c7cf63af10e24f
- https://git.kernel.org/stable/c/58386f00af710922cafb0fb69211497beddfaa95
- https://git.kernel.org/stable/c/8a8333237f1f5caab8d4c3d2c2e7578c4263a97f
- https://git.kernel.org/stable/c/ea363a34086ddb4231adc581a7f36c39ec154bfc
- https://git.kernel.org/stable/c/97014719bb8fccb1ffcbbc299e84b1f11b114195
- https://git.kernel.org/stable/c/69c02ffde6ed4d535fa4e693a9e572729cad3d0d
ADP enrichment
No English description supplied.