High 7.8Published Jun 24, 2026

CVE-2026-53112wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet

Updated under an hour ago (Oct 28, 2026, 2:30 PM ET)

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0c8173385e549f95cd80c3fff5aab87b4f881d8d before ae10d4a1ab6bcaa1336abb171908a9a365761d3e; from 0c8173385e549f95cd80c3fff5aab87b4f881d8d before fac1079e0fdec6df6d7562c21941587236dc3def; from 0c8173385e549f95cd80c3fff5aab87b4f881d8d before e40873820c9d245ce482faa7ad514ebdb3b8d23d; from 0c8173385e549f95cd80c3fff5aab87b4f881d8d before 008c456b76e9070979bc0e763897a5d3b0fdd4dc; from 0c8173385e549f95cd80c3fff5aab87b4f881d8d before 7731b67bd59d1284d150cbe40a47e95a10613234; from 0c8173385e549f95cd80c3fff5aab87b4f881d8d before aa10a452e34810987fb9f4a047995b30003fb53f; from 0c8173385e549f95cd80c3fff5aab87b4f881d8d before 3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b; from 0c8173385e549f95cd80c3fff5aab87b4f881d8d before 039cd522dc70151da13329a5e3ae19b1736f468a	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.38 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10	NVD

References

References

https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e	patch
https://git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def	patch
https://git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d	patch
https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc	patch
https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234	patch
https://git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f	patch
https://git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b	patch
https://git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.