CVEvulnerability

CVE-2023-53219

7.8 HIGH Published 2025-09-15 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2025-09-15
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416

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().

Affected configurations

• 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

Related

Weakness · CWE (1)

References