PT-2025-49059 · Linux · Linux Kernel

Published 2025-12-04 · Updated 2025-12-15 · CVE-2025-40232

Positive Technologies (AI Summary)

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

Description A flaw exists in the Linux kernel related to inconsistent iterator handling within the enabled monitors seq ops callbacks. Specifically, some callbacks treat the iterator as a struct rv monitor *, while others treat it as a struct list head *. This inconsistency leads to an incorrect type cast and can cause system crashes. The issue is resolved by converting all iterator handling to use struct list head *, aligning it with available monitors.

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

Exploit

Related Identifiers

CVE-2025-40232

USN-7920-1

USN-7920-2

Affected Products

Linux Kernel

References · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40232.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-40232 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7920-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40232 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-40232 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-40232 · Security Note
• https://osv.dev/vulnerability/USN-7920-2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-40232 · Security Note
• https://ubuntu.com/security/CVE-2025-40018 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7920-2 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7920-1 · Vendor Advisory
• https://git.kernel.org/stable/c/8948a0338d33c4a7ef1e0c439a3ad1d5fe9355ae · Note
• https://twitter.com/CVEnew/status/1996607079956852921 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://git.kernel.org/stable/c/103541e6a5854b08a25e4caa61e990af1009a52e · Note