Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d before ae10d4a1ab6bcaa1336abb171908a9a365761d3e; affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d before fac1079e0fdec6df6d7562c21941587236dc3def; affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d before e40873820c9d245ce482faa7ad514ebdb3b8d23d; affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d before 008c456b76e9070979bc0e763897a5d3b0fdd4dc; affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d before 7731b67bd59d1284d150cbe40a47e95a10613234; affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d before aa10a452e34810987fb9f4a047995b30003fb53f; affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d before 3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b; affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d before 039cd522dc70151da13329a5e3ae19b1736f468a |
| Linux / Linux | affected 2.6.38; unaffected 0 before 2.6.38; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.141 through 6.6.*; unaffected 6.12.91 through 6.12.*; unaffected 6.18.33 through 6.18.*; unaffected 7.0.10 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
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