Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iommufd: Prevent ALIGN() overflow When allocating IOVA the candidate range gets aligned to the target alignment. If the range is close to ULONG_MAX then the ALIGN() can wrap resulting in a corrupted iova. Open code the ALIGN() using get_add_overflow() to prevent this. This simplifies the checks as we don't need to check for length earlier either. Consolidate the two copies of this code under a single helper. This bug would allow userspace to create a mapping that overlaps with some other mapping or a reserved range.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 51fe6141f0f64ae0bbc096a41a07572273e8c0ef before d19b817540c0abe84854a64ee9ee34cecc3bbeef; affected 51fe6141f0f64ae0bbc096a41a07572273e8c0ef before ebb6021560b94649bec6b8faba6fe0dca2218e81; affected 51fe6141f0f64ae0bbc096a41a07572273e8c0ef before e42a046bb41dcdde4f766a17d8211842007ed537; affected 51fe6141f0f64ae0bbc096a41a07572273e8c0ef before 79fad1917802c28de51a479318a056a6fbe3e2f2; affected 51fe6141f0f64ae0bbc096a41a07572273e8c0ef before b42497e3c0e74db061eafad41c0cd7243c46436b |
| Linux / Linux | affected 6.2; unaffected 0 before 6.2; unaffected 6.6.103 through 6.6.*; unaffected 6.12.43 through 6.12.*; unaffected 6.15.11 through 6.15.*; unaffected 6.16.2 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d19b817540c0abe84854a64ee9ee34cecc3bbeef
- https://git.kernel.org/stable/c/ebb6021560b94649bec6b8faba6fe0dca2218e81
- https://git.kernel.org/stable/c/e42a046bb41dcdde4f766a17d8211842007ed537
- https://git.kernel.org/stable/c/79fad1917802c28de51a479318a056a6fbe3e2f2
- https://git.kernel.org/stable/c/b42497e3c0e74db061eafad41c0cd7243c46436b
ADP enrichment
No English description supplied.
No references supplied.