PT-2025-38045 · Linux+1 · Linux Kernel+1

Published 2023-03-05 · Updated 2025-09-17 · CVE-2023-53327

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 versions prior to 6.2.0-c9c3395d5e3d

Description The Linux kernel contained a flaw in the iommufd/selftest module where an overflow of uptr and length could occur. Specifically, syzkaller detected a WARN ON condition when attempting to utilize a uptr value close to UINTPTR MAX during a test. This issue arises from insufficient bounds checking when handling user memory ranges, potentially leading to system instability or unexpected behavior.

Recommendations Update to a version later than 6.2.0-c9c3395d5e3d.

Exploit

Fix

Integer Overflow

Buffer Overflow

Weakness Enumeration

CWE-190

CWE-120

Related Identifiers

BDU:2026-03352

CVE-2023-53327

Affected Products

Astra Linux

Linux Kernel

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53327.json · Exploit
• https://git.kernel.org/stable/c/3fb3505636d033bbf7a0851dac63d01732c51d62 · Patch
• https://git.kernel.org/stable/c/adac6508c235a092b91ed9c0110ecf140e9e9441 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53327 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-03352 · Security Note
• https://osv.dev/vulnerability/CVE-2023-53327 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53327 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53327 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53327 · Security Note
• https://git.kernel.org/stable/c/fd8c1a4aee973e87d890a5861e106625a33b2c4e · Patch
• https://osv.dev/vulnerability/BELL-CVE-2023-53327 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53327 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-53327 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/CVEnew/status/1968190798454833621 · Twitter Post