Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mm/mincore: handle non-swap entries before !CONFIG_SWAP guard mincore_swap() also fields migration/hwpoison entries (and shmem swapin-error entries), which can exist on !CONFIG_SWAP builds when CONFIG_MIGRATION or CONFIG_MEMORY_FAILURE is enabled. The !IS_ENABLED(CONFIG_SWAP) guard ran before the non-swap-entry early return, so mincore_pte_range() can spuriously WARN and report these pages nonresident on !CONFIG_SWAP kernels. Move the guard below the non-swap-entry check so only true swap entries trip the WARN, and migration/hwpoison entries take the existing "uptodate / non-shmem" path.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1f2052755c152940c336918bd73d13d5468f548b before a8f91ddf67f669f547bb9fb559738da6f8ee2cf3; affected 1f2052755c152940c336918bd73d13d5468f548b before 3481d4372ae34243f7025925314385b852c50f7e; affected 1f2052755c152940c336918bd73d13d5468f548b before 0c25b8734367574e21aeb8468c2e522713134da7 |
| Linux / Linux | affected 6.18; unaffected 0 before 6.18; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.