PT-2025-37660 · Linux+3 · Linux Kernel+3

Published 2025-09-15 · Updated 2026-04-14 · CVE-2023-53219

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description The Linux kernel contains a use-after-free issue within the netup unidvb driver when a Universal DVB card is detached. Specifically, the del timer() function may not successfully stop the dma->timeout timer if the timer handler netup unidvb dma timeout() is currently running. This can lead to a use-after-free condition when the timer attempts to access memory that has already been freed. The vulnerable function is del timer().

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

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2023-53219

SUSE-SU-2025:03615-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 865

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53219.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-53219 · Security Note
• https://git.kernel.org/stable/c/90229e9ee957d4514425e4a4d82c50ab5d57ac4d · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:3761-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://git.kernel.org/stable/c/07821524f67bf920342bc84ae8b3dea2a315a89e · Patch
• https://ubuntu.com/security/CVE-2023-53219 · Vendor Advisory
• https://git.kernel.org/stable/c/051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3 · Patch
• https://cve.org/CVERecord?id=CVE-2023-53219 · Security Note
• https://git.kernel.org/stable/c/f9982db735a8495eee14267cf193c806b957e942 · Patch
• https://git.kernel.org/stable/c/0f5bb36bf9b39a2a96e730bf4455095b50713f63 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory
• https://git.kernel.org/stable/c/1550bcf2983ae1220cc8ab899a39a423fa7cb523 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2023-53219 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53219 · Vendor Advisory