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The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.
Evaluator Description
CWE-476: NULL Pointer Dereference
Metrics
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CVE Modified by Red Hat, Inc.5/13/2024 11:23:01 PM
Action
Type
Old Value
New Value
Modified Analysis by NIST12/22/2023 3:17:47 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.9 up to (excluding) 3.10.76
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.11 up to (excluding) 3.12.43
Removed
CPE Configuration
OR
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:numa_systems:* versions up to (including) 3.12.9
https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178 No Types Assigned
https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178 Third Party Advisory
CVE Modified by Red Hat, Inc.2/12/2023 7:44:25 PM
Action
Type
Old Value
New Value
Removed
CVSS V2
Red Hat, Inc. (AV:L/AC:L/Au:N/C:N/I:N/A:C)
Removed
CVSS V3
Red Hat, Inc. AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Changed
Description
A NULL pointer dereference flaw was found in the way the Linux kernel's madvise MADV_WILLNEED functionality handled page table locking. A local, unprivileged user could use this flaw to crash the system.
The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.
The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.
A NULL pointer dereference flaw was found in the way the Linux kernel's madvise MADV_WILLNEED functionality handled page table locking. A local, unprivileged user could use this flaw to crash the system.
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