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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
0c8173385e549f95cd80c3fff5aab87b4f881d8d to < ae10d4a1ab6bcaa1336abb171908a9a365761d3eaffected0c8173385e549f95cd80c3fff5aab87b4f881d8d to < fac1079e0fdec6df6d7562c21941587236dc3defaffected0c8173385e549f95cd80c3fff5aab87b4f881d8d to < e40873820c9d245ce482faa7ad514ebdb3b8d23daffected0c8173385e549f95cd80c3fff5aab87b4f881d8d to < 008c456b76e9070979bc0e763897a5d3b0fdd4dcaffected0c8173385e549f95cd80c3fff5aab87b4f881d8d to < 7731b67bd59d1284d150cbe40a47e95a10613234affected0c8173385e549f95cd80c3fff5aab87b4f881d8d to < aa10a452e34810987fb9f4a047995b30003fb53faffected0c8173385e549f95cd80c3fff5aab87b4f881d8d to < 3c0e8a3179e6325a7dc6ce221aef0e03d854ab4baffected0c8173385e549f95cd80c3fff5aab87b4f881d8d to < 039cd522dc70151da13329a5e3ae19b1736f468aaffected
Linux Linux
Default version status: affected
2.6.38affected0 to < 2.6.38unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.141 to ≤ 6.6.*unaffected6.12.91 to ≤ 6.12.*unaffected6.18.33 to ≤ 6.18.*unaffected7.0.10 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e ↗
- https://git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def ↗
- https://git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d ↗
- https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc ↗
- https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234 ↗
- https://git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f ↗
- https://git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b ↗
- https://git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a ↗