PT-2025-37677 · Linux+1 · Linux Kernel+1

Published 2023-04-04 · Updated 2025-09-16 · CVE-2023-53236

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.3.0-rc2-eeac8ede1755+

Description A flaw exists in the Linux kernel's iommufd subsystem related to page frame number (pfn) list corruption during batch carry operations. Specifically, if batch->end is 0, setting npfns[0] before computing the new pfn value can lead to page accounting corruption. This can manifest as various kinds of page meta-data corruption failures, as observed in warnings during CPU operation.

Recommendations Update to a version newer than 6.3.0-rc2-eeac8ede1755+ to address this issue.

Exploit

Fix

Weakness Enumeration

CWE-911

Related Identifiers

BDU:2026-06002

CVE-2023-53236

Affected Products

Astra Linux

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53236.json · Exploit
• https://ubuntu.com/security/CVE-2023-53236 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53236 · Vendor Advisory
• https://git.kernel.org/stable/c/6ed5784526ddc0fb58b1798af36ec0c3139a8dca · Patch
• https://bdu.fstec.ru/vul/2026-06002 · Security Note
• https://git.kernel.org/stable/c/13a0d1ae7ee6b438f5537711a8c60cba00554943 · Patch
• https://osv.dev/vulnerability/CVE-2023-53236 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53236 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53236 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53236 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53236 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53236 · Security Note
• https://twitter.com/CVEnew/status/1967602059949043721 · Twitter Post
• https://git.kernel.org/linus/13a0d1ae7ee6b438f5537711a8c60cba00554943 · Note
• https://docs.bell-sw.com/security/cves/CVE-2023-53236 · Note