PT-2026-43884 · Linux · Linux Kernel

CVE-2026-46017 · Published 2026-05-27 · Updated 2026-07-18

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A race condition exists in the deferred split queue during migration. The migrate folio move() function records the deferred split queue state from the source and replays it on the destination. When replayed after remove migration ptes(src, dst, 0), the destination becomes visible before it is requeued. This allows a concurrent rmap-removal path to mark the destination as partially mapped, triggering a warning in deferred split folio(). Additionally, if deferred split scan() fails to requeue a folio when folio trylock() fails, a fully mapped underused folio could be dequeued by the shrinker and lost from the split queue.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2026-46017

OPENSUSE-SU-2026:10954-1

Affected Products

Linux Kernel

References · 291

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46017.json · Exploit
• https://osv.dev/vulnerability/openSUSE-SU-2026:10954-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-46017 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-46017 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-46017 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2026-46017 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-46017 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-46017 · Security Note
• https://git.kernel.org/stable/c/cbf75cf212ee6e499abc1757fb4b5ae6d70ed0aa · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-46017 · Security Note
• https://git.kernel.org/stable/c/3bac01168982ec3e3bf87efdc1807c7933590a85 · Patch
• https://ubuntu.com/security/CVE-2026-46017 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2026-46017 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-46017 · Vendor Advisory
• https://suse.com/security/cve/CVE-2026-46148 · Note