CVE-2023-52934

In the Linux kernel, the following vulnerability has been resolved: mm/MADVCOLLAPSE: catch !none !huge !bad pmd lookups In commit 34488399fa08 "mm/madvise: add file and shmem support to MADVCOLLAPSE" we make the following change to findpmdorthpornone: - if !pmdpresentpmde - return SCANPMDNULL; + ...

CVE-2023-52934 mm/MADV_COLLAPSE: catch !none !huge !bad pmd lookups

In the Linux kernel, the following vulnerability has been resolved: mm/MADVCOLLAPSE: catch !none !huge !bad pmd lookups In commit 34488399fa08 "mm/madvise: add file and shmem support to MADVCOLLAPSE" we make the following change to findpmdorthpornone: - if !pmdpresentpmde - return SCANPMDNULL; + ...

CVE-2023-52934

The CVE-2023-52934 entry concerns the Linux kernel MADV_COLLAPSE path in mm/madvise. A commit changing find_pmd_or_thp_or_none() from returning SCAN_PMD_NULL when !pmd_present(pmde) to returning SCAN_PMD_NONE when pmd_none(pmde) was introduced to better distinguish none-pmd vs absent/present-pmd ...

PT-2023-34933 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v6.1.11 Description: The issue is related to mm/MADV COLLAPSE, which involves catching certain pmd lookups. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kernel...