CVE-2026-53333 Details
Description
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.
A vulnerability in the Linux kernel's memory management component can lead to incorrect handling of non-swap entries in the mincore_swap() function. This issue can cause the system to mistakenly report certain pages as non-resident on kernels without swap support, potentially leading to migration of memory or mismanagement of hardware errors. The vulnerability arises because the guard checking for swap support was positioned incorrectly, allowing erroneous warnings and page status reports on non-swap kernels.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/0c25b8734367574e21aeb8468c2e522713134da7 | kernel.org | Patch |
| https://git.kernel.org/stable/c/3481d4372ae34243f7025925314385b852c50f7e | kernel.org | Patch |
| https://git.kernel.org/stable/c/a8f91ddf67f669f547bb9fb559738da6f8ee2cf3 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.18, < 6.18.36 >= 6.19, < 7.0.13 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 7.1 rc5 7.1 rc6 7.1 rc7 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | Initial Analysis | [email protected] |
| Jul 1, 2026 | New CVE Received | kernel.org |