Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: x86/fred: Correct speculative safety in fred_extint() array_index_nospec() is no use if the result gets spilled to the stack, as it makes the believed safe-under-speculation value subject to memory predictions. For all practical purposes, this means array_index_nospec() must be used in the expression that accesses the array. As the code currently stands, it's the wrong side of irqentry_enter(), and 'index' is put into %ebp across the function call. Remove the index variable and reposition array_index_nospec(), so it's calculated immediately before the array access.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 14619d912b658ecd9573fb88400d3830a29cadcb before 3bc5887b0a2b06d2d9c22f1f4f8500490b3ae643; affected 14619d912b658ecd9573fb88400d3830a29cadcb before e58f1a9b0677de24dcfee0b21393446ec92ff120; affected 14619d912b658ecd9573fb88400d3830a29cadcb before 92caa5274b99cb6729177232a029ce0dfa6c5f7b; affected 14619d912b658ecd9573fb88400d3830a29cadcb before aa280a08e7d8fae58557acc345b36b3dc329d595 |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.12.77 through 6.12.*; unaffected 6.18.17 through 6.18.*; unaffected 6.19.7 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.