CVE-2026-53112

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53112", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.385Z", "datePublished": "2026-06-24T16:30:45.359Z", "dateUpdated": "2026-06-24T16:30:45.359Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:30:45.359Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet\n\nThe irq_prepare_bcn_tasklet is initialized in rtl_pci_init() and\nscheduled when RTL_IMR_BCNINT interrupt is triggered by hardware.\nBut it is never killed in rtl_pci_deinit(). When the rtlwifi card\nprobe fails or is being detached, the ieee80211_hw is deallocated.\nHowever, irq_prepare_bcn_tasklet may still be running or pending,\nleading to use-after-free when the freed ieee80211_hw is accessed\nin _rtl_pci_prepare_bcn_tasklet().\n\nSimilar to irq_tasklet, add tasklet_kill() in rtl_pci_deinit() to\nensure that irq_prepare_bcn_tasklet is properly terminated before\nthe ieee80211_hw is released.\n\nThe issue was identified through static analysis."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/realtek/rtlwifi/pci.c"], "versions": [{"version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "ae10d4a1ab6bcaa1336abb171908a9a365761d3e", "status": "affected", "versionType": "git"}, {"version": "0c8173385e549f95cd80c3fff5aab87b4f881d8d", "lessThan": "fac1079e0fdec6df6d7562c21941587236dc3def", "status": 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{}

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When the rtlwifi card\nprobe fails or is being detached, the ieee80211_hw is deallocated.\nHowever, irq_prepare_bcn_tasklet may still be running or pending,\nleading to use-after-free when the freed ieee80211_hw is accessed\nin _rtl_pci_prepare_bcn_tasklet().\n\nSimilar to irq_tasklet, add tasklet_kill() in rtl_pci_deinit() to\nensure that irq_prepare_bcn_tasklet is properly terminated before\nthe ieee80211_hw is released.\n\nThe issue was identified through static analysis."}], "id": "CVE-2026-53112", "lastModified": "2026-07-23T21:30:30.730", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-06-24T17:17:25.583", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/008c456b76e9070979bc0e763897a5d3b0fdd4dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/039cd522dc70151da13329a5e3ae19b1736f468a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7731b67bd59d1284d150cbe40a47e95a10613234"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aa10a452e34810987fb9f4a047995b30003fb53f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ae10d4a1ab6bcaa1336abb171908a9a365761d3e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e40873820c9d245ce482faa7ad514ebdb3b8d23d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fac1079e0fdec6df6d7562c21941587236dc3def"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet", "id": "2492303", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492303"}, "csaw": false, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's `rtlwifi` PCI driver. This vulnerability, a use-after-free, occurs when a `rtlwifi` wireless card is detached or fails to initialize, and a related background task is not properly shut down. This can lead to the system attempting to access memory that has already been released, potentially causing system instability or a denial of service."], "name": "CVE-2026-53112", "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53112\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53112\nhttps://lore.kernel.org/linux-cve-announce/2026062414-CVE-2026-53112-ca3f@gregkh/T"]}

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