CVE-2023-53219 — Use After Free in Linux

CWE-416 — Use After Free5 documents5 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 95.63%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 15

Description

In the Linux kernel, the following vulnerability has been resolved: media: netup_unidvb: fix use-after-free at del_timer() When Universal DVB card is detaching, netup_unidvb_dma_fini() uses del_timer() to stop dma->timeout timer. But when timer handler netup_unidvb_dma_timeout() is running, del_timer() could not stop it. As a result, the use-after-free bug could happen. The process is shown below: (cleanup routine) | (timer routine) | mod_timer(&dev->tx_sim_timer, ..) netup_unidvb_finidev() |…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel4.3 — 4.14.316+7
▶Debianlinux/linux_kernel< 5.10.191-1+3
▶CVEListV5linux/linux52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e — dd5c77814f290b353917df329f36de1472d47154+8
▶debiandebian/linux< linux 6.1.37-1 (bookworm)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
OSV
CVE-2023-53219: In the Linux kernel, the following vulnerability has been resolved: media: netup_unidvb: fix use-after-free at del_timer() When Universal DVB card is↗2025-09-15
▶
GHSA
GHSA-76f5-923v-9jc3: In the Linux kernel, the following vulnerability has been resolved: media: netup_unidvb: fix use-after-free at del_timer() When Universal DVB card i↗2025-09-15
▶

📋Vendor Advisories

2
Red Hat
kernel: media: netup_unidvb: fix use-after-free at del_timer()↗2025-09-15
▶
Debian
CVE-2023-53219: linux - In the Linux kernel, the following vulnerability has been resolved: media: netu...↗2023
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CVE-2023-53219 — Use After Free in Linux | cvebase