PT-2025-10075 · Linux+1 · Linux Kernel+1

Published 2025-03-07 · Updated 2025-03-10 · CVE-2025-21843

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 issue in the Linux kernel has been identified where the priorities info variable is uninitialized. This uninitialized value is then copied to a user object when the PANTHOR UOBJ SET() function is called, potentially leading to unexpected behavior. The problem arises from a garbage value in the panthor ioctl dev query() function.

Recommendations To resolve this issue, initialize the priorities info variable using memset to avoid the garbage value problem. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

CVE-2025-21843

Affected Products

Astra Linux

Linux Kernel

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21843.json · Exploit
• https://git.kernel.org/stable/c/3b32b7f638fe61e9d29290960172f4e360e38233 · Patch
• https://git.kernel.org/stable/c/64b95bbc08bacf3e4b05c8604e6a4fec43bb712a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-21843 · Security Note
• https://ubuntu.com/security/CVE-2025-21843 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-21843 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-21843 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-21843 · Security Note
• https://git.kernel.org/linus/3b32b7f638fe61e9d29290960172f4e360e38233 · Note
• https://twitter.com/CVEnew/status/1898246382860882324 · Twitter Post
• https://t.me/cvedetector/19809 · Telegram Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://t.me/cvetracker/18665 · Telegram Post