UBUNTU-CVE-2026-53112 (CVE-2026-53112)

Vulnerability from osv_ubuntu – Published: 2026-06-24 17:17 – Updated: 2026-11-06 10:32 – Source website
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved: wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet The irq_prepare_bcn_tasklet is initialized in rtl_pci_init() and scheduled when RTL_IMR_BCNINT interrupt is triggered by hardware. But it is never killed in rtl_pci_deinit(). When the rtlwifi card probe fails or is being detached, the ieee80211_hw is deallocated. However, irq_prepare_bcn_tasklet may still be running or pending, leading to use-after-free when the freed ieee80211_hw is accessed in _rtl_pci_prepare_bcn_tasklet(). Similar to irq_tasklet, add tasklet_kill() in rtl_pci_deinit() to ensure that irq_prepare_bcn_tasklet is properly terminated before the ieee80211_hw is released. The issue was identified through static analysis.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
low
References
https://ubuntu.com/security/CVE-2026-53112 REPORT
https://www.cve.org/CVERecord?id=CVE-2026-53112 REPORT
https://git.kernel.org/linus/039cd522dc70151da133… REPORT
https://ubuntu.com/security/notices/USN-8566-1 ADVISORY
https://ubuntu.com/security/notices/USN-8568-1 ADVISORY
https://ubuntu.com/security/notices/USN-8569-1 ADVISORY
https://ubuntu.com/security/notices/USN-8567-1 ADVISORY
https://ubuntu.com/security/notices/USN-8574-1 ADVISORY
https://ubuntu.com/security/notices/USN-8575-1 ADVISORY
https://ubuntu.com/security/notices/USN-8576-1 ADVISORY
https://ubuntu.com/security/notices/USN-8593-1 ADVISORY
https://ubuntu.com/security/notices/USN-8574-2 ADVISORY
https://ubuntu.com/security/notices/USN-8595-1 ADVISORY
https://ubuntu.com/security/notices/USN-8596-1 ADVISORY
https://ubuntu.com/security/notices/USN-8575-2 ADVISORY
https://ubuntu.com/security/notices/USN-8576-2 ADVISORY
https://ubuntu.com/security/notices/USN-8603-1 ADVISORY
https://ubuntu.com/security/notices/USN-8595-2 ADVISORY
https://ubuntu.com/security/notices/USN-8606-1 ADVISORY
https://ubuntu.com/security/notices/USN-8607-1 ADVISORY
https://ubuntu.com/security/notices/USN-8608-1 ADVISORY
https://ubuntu.com/security/notices/USN-8609-1 ADVISORY
https://ubuntu.com/security/notices/USN-8575-3 ADVISORY
https://ubuntu.com/security/notices/USN-8610-1 ADVISORY
https://ubuntu.com/security/notices/USN-8618-1 ADVISORY
https://ubuntu.com/security/notices/USN-8574-3 ADVISORY
https://ubuntu.com/security/notices/USN-8595-3 ADVISORY
https://ubuntu.com/security/notices/USN-8619-1 ADVISORY
https://ubuntu.com/security/notices/USN-8620-1 ADVISORY
https://ubuntu.com/security/notices/USN-8620-2 ADVISORY
https://ubuntu.com/security/notices/USN-8620-3 ADVISORY
https://ubuntu.com/security/notices/USN-8620-4 ADVISORY
https://ubuntu.com/security/notices/USN-8663-1 ADVISORY
https://ubuntu.com/security/notices/USN-8664-1 ADVISORY
https://ubuntu.com/security/notices/USN-8665-1 ADVISORY
https://ubuntu.com/security/notices/USN-8668-1 ADVISORY
https://ubuntu.com/security/notices/USN-8728-1 ADVISORY
https://ubuntu.com/security/notices/USN-8668-2 ADVISORY
https://ubuntu.com/security/notices/USN-8728-2 ADVISORY
https://ubuntu.com/security/notices/USN-8728-3 ADVISORY
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