CVE-2026-53112
wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet
Description
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.
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
July 14, 2026, 3:26 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Ensure tasklet is killed before hardware is released.
- Properly terminate irq_prepare_bcn_tasklet in deinit.
- Apply the provided kernel patch.
- Update the Linux kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53112.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53112 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53112
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53112 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53112 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '0c8173385e549f95cd80c3fff5aab87b4f881d8d', 'lessThan': 'ae10d4a1ab6bcaa1336abb171908a9a365761d3e', 'versionType': 'git'}, {'status': 'affected', 'version': '0c8173385e549f95cd80c3fff5aab87b4f881d8d', 'lessThan': 'fac1079e0fdec6df6d7562c21941587236dc3def', 'versionType': 'git'}, {'status': 'affected', 'version': '0c8173385e549f95cd80c3fff5aab87b4f881d8d', 'lessThan': 'e40873820c9d245ce482faa7ad514ebdb3b8d23d', 'versionType': 'git'}, {'status': 'affected', 'version': '0c8173385e549f95cd80c3fff5aab87b4f881d8d', 'lessThan': '008c456b76e9070979bc0e763897a5d3b0fdd4dc', 'versionType': 'git'}, {'status': 'affected', 'version': '0c8173385e549f95cd80c3fff5aab87b4f881d8d', 'lessThan': '7731b67bd59d1284d150cbe40a47e95a10613234', 'versionType': 'git'}, {'status': 'affected', 'version': '0c8173385e549f95cd80c3fff5aab87b4f881d8d', 'lessThan': 'aa10a452e34810987fb9f4a047995b30003fb53f', 'versionType': 'git'}, {'status': 'affected', 'version': '0c8173385e549f95cd80c3fff5aab87b4f881d8d', 'lessThan': '3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b', 'versionType': 'git'}, {'status': 'affected', 'version': '0c8173385e549f95cd80c3fff5aab87b4f881d8d', 'lessThan': '039cd522dc70151da13329a5e3ae19b1736f468a', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/realtek/rtlwifi/pci.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.38'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.38', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.258', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.209', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.175', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/wireless/realtek/rtlwifi/pci.c'], 'defaultStatus': 'affected'}] Added Description 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. Added Reference https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc Added Reference https://git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a Added Reference https://git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b Added Reference https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234 Added Reference https://git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f Added Reference https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e Added Reference https://git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d Added Reference https://git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def