wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet
Summary
| CVE | CVE-2026-53112 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-24 17:17:25 UTC |
| Updated | 2026-06-24 17:17:25 UTC |
| 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. |
Risk And Classification
EPSS: 0.001640000 probability, percentile 0.059970000 (date 2026-06-26)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d ae10d4a1ab6bcaa1336abb171908a9a365761d3e git | Not specified |
| CNA | Linux | Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d fac1079e0fdec6df6d7562c21941587236dc3def git | Not specified |
| CNA | Linux | Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d e40873820c9d245ce482faa7ad514ebdb3b8d23d git | Not specified |
| CNA | Linux | Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d 008c456b76e9070979bc0e763897a5d3b0fdd4dc git | Not specified |
| CNA | Linux | Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d 7731b67bd59d1284d150cbe40a47e95a10613234 git | Not specified |
| CNA | Linux | Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d aa10a452e34810987fb9f4a047995b30003fb53f git | Not specified |
| CNA | Linux | Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d 3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b git | Not specified |
| CNA | Linux | Linux | affected 0c8173385e549f95cd80c3fff5aab87b4f881d8d 039cd522dc70151da13329a5e3ae19b1736f468a git | Not specified |
| CNA | Linux | Linux | affected 2.6.38 | Not specified |
| CNA | Linux | Linux | unaffected 2.6.38 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.141 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.91 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.33 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.10 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.