Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handle_in() and handle_out() in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASK(BITS_PER_BYTE * size, 0); GENMASK(h, l) includes bit h. For size=1 (INB), this produces GENMASK(8, 0) = 0x1FF (9 bits) instead of GENMASK(7, 0) = 0xFF (8 bits). The mask is one bit too wide for all I/O sizes. Fix the mask calculation.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 03149948832a078f759022ed5b92e722d8d23c26 before c6875423ad849ac234ab9812eb72f37ff8a490b4; affected 03149948832a078f759022ed5b92e722d8d23c26 before 220011fe95fc78b2bc2d7d43893bc73957a5c811; affected 03149948832a078f759022ed5b92e722d8d23c26 before 222b7005e4519f633b4cd666226256abbab46a1a; affected 03149948832a078f759022ed5b92e722d8d23c26 before c4a22154870813d10aa0b4c734a574c726f9d4b0; affected 03149948832a078f759022ed5b92e722d8d23c26 before bb45f705c4440dd3c689328319b88dd28770bbb8; affected 03149948832a078f759022ed5b92e722d8d23c26 before 0f63e656b1c679d32ac595de29d10c03efca6a25 |
| Linux / Linux | affected 5.19; unaffected 0 before 5.19; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/c6875423ad849ac234ab9812eb72f37ff8a490b4
- https://git.kernel.org/stable/c/220011fe95fc78b2bc2d7d43893bc73957a5c811
- https://git.kernel.org/stable/c/222b7005e4519f633b4cd666226256abbab46a1a
- https://git.kernel.org/stable/c/c4a22154870813d10aa0b4c734a574c726f9d4b0
- https://git.kernel.org/stable/c/bb45f705c4440dd3c689328319b88dd28770bbb8
- https://git.kernel.org/stable/c/0f63e656b1c679d32ac595de29d10c03efca6a25