CVE-2025-40353

Description

In the Linux kernel, the following vulnerability has been resolved:arm64: mte: Do not warn if the page is already tagged in copy_highpage()The arm64 copy_highpage() assumes that the destination page is newlyallocated and not MTE-tagged (PG_mte_tagged unset) and warnsaccordingly. However, following commit 060913999d7a (mm: migrate:support poisoned recover from migrate folio), folio_mc_copy() is calledbefore __folio_migrate_mapping(). If the latter fails (-EAGAIN), thecopy will be done again to the same destination page. Sincecopy_highpage() already set the PG_mte_tagged flag, this second copywill warn.Replace the WARN_ON_ONCE(page already tagged) in the arm64copy_highpage() with a comment.

Risk Information

Base Score

5.3

MODERATE

Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Score

Exploitation Probability

0.025

Associated Vulnerability

No records found

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234