CVE-2023-53219

HIGH EPSS 4.5%

Published Sep 15, 20259mo ago · Modified Jun 17, 20261w ago

7.8 CVSS 3.1

High

Published Sep 15, 2025 9mo ago

Last Modified Jun 17, 2026 1w ago

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() | (wait a time) netup_unidvb_dma_fini() | netup_unidvb_dma_timeout() del_timer(&dma->timeout); | | ndev->pci_dev->dev //USE Fix by changing del_timer() to del_timer_sync().

CVSS Details

Base Score

7.8

Exploitability

1.8

Impact

5.9

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector Local

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

4.5% percentile

Exploit & Patch Status

No Known Exploit

Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 9

Vendor	Product	Version	Range
linux	linux_kernel	*	≥4.3 – <4.14.316
linux	linux_kernel	*	≥4.15 – <4.19.284
linux	linux_kernel	*	≥4.20 – <5.4.244
linux	linux_kernel	*	≥5.5 – <5.10.181
linux	linux_kernel	*	≥5.11 – <5.15.113
linux	linux_kernel	*	≥5.16 – <6.1.30
linux	linux_kernel	*	≥6.2 – <6.3.4
linux	linux_kernel	6.4	any
linux	linux_kernel	6.4	any

References 8

git.kernel.org https://git.kernel.org/stable/c/051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3

Patch
git.kernel.org https://git.kernel.org/stable/c/07821524f67bf920342bc84ae8b3dea2a315a89e

Patch
git.kernel.org https://git.kernel.org/stable/c/0f5bb36bf9b39a2a96e730bf4455095b50713f63

Patch
git.kernel.org https://git.kernel.org/stable/c/1550bcf2983ae1220cc8ab899a39a423fa7cb523

Patch
git.kernel.org https://git.kernel.org/stable/c/90229e9ee957d4514425e4a4d82c50ab5d57ac4d

Patch
git.kernel.org https://git.kernel.org/stable/c/c8f9c05e1ebcc9c7bc211cc8b74d8fb86a8756fc

Patch
git.kernel.org https://git.kernel.org/stable/c/dd5c77814f290b353917df329f36de1472d47154

Patch
git.kernel.org https://git.kernel.org/stable/c/f9982db735a8495eee14267cf193c806b957e942

Patch

Remediation

git.kernel.org https://git.kernel.org/stable/c/051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3

Patch
git.kernel.org https://git.kernel.org/stable/c/07821524f67bf920342bc84ae8b3dea2a315a89e

Patch
git.kernel.org https://git.kernel.org/stable/c/0f5bb36bf9b39a2a96e730bf4455095b50713f63

Patch
git.kernel.org https://git.kernel.org/stable/c/1550bcf2983ae1220cc8ab899a39a423fa7cb523

Patch
git.kernel.org https://git.kernel.org/stable/c/90229e9ee957d4514425e4a4d82c50ab5d57ac4d

Patch
git.kernel.org https://git.kernel.org/stable/c/c8f9c05e1ebcc9c7bc211cc8b74d8fb86a8756fc

Patch
git.kernel.org https://git.kernel.org/stable/c/dd5c77814f290b353917df329f36de1472d47154

Patch
git.kernel.org https://git.kernel.org/stable/c/f9982db735a8495eee14267cf193c806b957e942

Patch