PT-2025-28875 · Linux+1 · Linux Kernel+1

Anubis · Published 2025-06-24 · Updated 2025-07-09 · CVE-2025-38247

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description: A flaw exists in the Linux kernel related to userns and mnt idmap leaks within the open tree attr(2) function. Specifically, a failure in do mount setattr() does not release the mnt userns, potentially leading to information disclosure of userns and potentially mnt idmap.

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

Exploit

Missing Release of Resource after Effective Lifetime

Memory Leak

Weakness Enumeration

CWE-772

CWE-401

Related Identifiers

BDU:2025-09590

CVE-2025-38247

Affected Products

Astra Linux

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38247.json · Exploit
• https://ubuntu.com/security/CVE-2025-38247 · Vendor Advisory
• https://git.kernel.org/stable/c/0748e553df0225754c316a92af3a77fdc057b358 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-38247 · Vendor Advisory
• https://git.kernel.org/stable/c/142db4e76110dd80239f4e79810f85ea1735ad60 · Patch
• https://cve.org/CVERecord?id=CVE-2025-38247 · Security Note
• https://bdu.fstec.ru/vul/2025-09590 · Security Note
• https://osv.dev/vulnerability/CVE-2025-38247 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38247 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-38247 · Vendor Advisory
• https://git.kernel.org/linus/0748e553df0225754c316a92af3a77fdc057b358 · Note
• https://vuldb.com/?id.315780 · Note
• https://twitter.com/CVEnew/status/1942924447033540996 · Twitter Post
• https://lore.kernel.org/linux-cve-announce/2025070934-CVE-2025-38247-14ac@gregkh · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note