PT-2025-49027 · Linux · Linux Kernel

Published 2025-12-04 · Updated 2025-12-06 · CVE-2025-40216

Positive Technologies (AI Summary)

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

Description The Linux kernel contains an issue within the io uring/rsrc subsystem. The problem arises because the system does not guarantee alignment for user pointers. Specifically, the calculation of an offset for the first page within a folio after coalescing utilizes flawed bit mask logic. This logic has been removed to address the issue.

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

Exploit

Related Identifiers

CVE-2025-40216

Affected Products

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40216.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-40216 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-40216 · Security Note
• https://osv.dev/vulnerability/CVE-2025-40216 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-40216 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2025-40216 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-40216 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40216 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-40216 · Vendor Advisory
• https://git.kernel.org/stable/c/f16769241594be59387b56ab525e327f54377e60 · Note
• https://git.kernel.org/stable/c/3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://t.me/CVEtracker/38822 · Telegram Post
• https://git.kernel.org/stable/c/50998b0ae7d9d552e96d8b7239981cf05f65eff5 · Note
• https://git.kernel.org/linus/3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b · Note