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CVE-2024-35797 is a race-condition flaw in the Linux kernel memory-management cachestat implementation when it operates on shared-memory (shmem) inodes concurrently with swap activity and invalidation. A failed swap-in can leave a poisoned swap entry in the shmem inode xarray. The affected code could pass this entry to swap-cache shadow lookup logic, causing an out-of-bounds access to the swapper-space array. Separately, a valid shmem swap entry may have no corresponding shadow entry while swap I/O is in progress or after concurrent swap-in, invalidation, or swapoff activity; the code could then perform a bogus workingset recency test using a NULL shadow entry. The fix validates entries with non_swap_entry() before further processing and stops processing when the shadow lookup returns NULL.
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2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel memory-management vulnerability in cachestat related to two shmem bugs.
A resolved Linux kernel memory-management (mm) cachestat issue involving two shared-memory (shmem) bugs. An automated assessment characterized its potential impact as moderate, based on patch-derived indicators including write out-of-bounds, locking, danger, and race-condition flags.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.