CVE-2025-40353
- Source
- https://cve.org/CVERecord?id=CVE-2025-40353
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40353.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-40353
- Downstream
- Related
- Published
- 2025-12-16T13:30:26Z
- Modified
- 2026-08-12T03:30:32Z
- Summary
- arm64: mte: Do not warn if the page is already tagged in copy_highpage()
- Details
-
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 newly allocated and not MTE-tagged (PG_mte_tagged unset) and warns accordingly. However, following commit 060913999d7a ("mm: migrate: support poisoned recover from migrate folio"), folio_mc_copy() is called before __folio_migrate_mapping(). If the latter fails (-EAGAIN), the copy will be done again to the same destination page. Since copy_highpage() already set the PG_mte_tagged flag, this second copy will warn.
Replace the WARN_ON_ONCE(page already tagged) in the arm64 copy_highpage() with a comment.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40353.json" }- References
-
- https://git.kernel.org/stable/c/0bbf3fc6e9211fce9889fe8efbb89c220504d617
- https://git.kernel.org/stable/c/5ff5765a1fc526f07d3bbaedb061d970eb13bcf4
- https://git.kernel.org/stable/c/b98c94eed4a975e0c80b7e90a649a46967376f58
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40353.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-40353
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git