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The freed `rtl8xxxu_priv` slab object can be reclaimed and groomed by the attacker, and the work callback reads through it (`priv->fops`, `priv->udev->dev`, `priv->c2hcmd_queue`), yielding a use-after-free read primitive that can disclose arbitrary kernel memory.\nI:H - The stale work item writes into the freed object (skb dequeue/list manipulation on `c2hcmd_queue`, updates to `priv->ra_report` and `priv->bt_coex`), and the workqueue core manipulates the freed embedded `work_struct`, giving a controlled-write primitive on reclaimed heap memory that is leverageable for control-flow hijack.\nA:H - Even unexploited, the use-after-free reliably produces a kernel oops or panic when the work runs against freed memory, and it can be retriggered on every device stop."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "lessThan": "dddedfa3b29a63c2ca4336663806a6128b8545b4", "versionType": "git"}, {"status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "lessThan": "ac512507ac89c01ed6cd4ca53032f52cdb23ea59", "versionType": "git"}, {"status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "lessThan": "3518cea837de4d106efa84ddac18a07b6de1384e", "versionType": "git"}, {"status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "lessThan": "156012667b85ca7305cb363790d3ae8519a6f41e", "versionType": "git"}, {"status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "lessThan": "7059cdb69f8e1a2707dd1e2f363348b507ed7707", "versionType": "git"}, {"status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "lessThan": "58fe3bbddfec10c6b216096d8c0e517cd8463e3a", "versionType": "git"}, {"status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "lessThan": "1213acb478a7181cd73eeaf00db430f1e45b1361", "versionType": "git"}], "programFiles": ["drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"status": "unaffected", "version": "0", "lessThan": "5.5", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.214", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.153", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.83", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.23", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.11", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8.2", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/dddedfa3b29a63c2ca4336663806a6128b8545b4"}, {"url": "https://git.kernel.org/stable/c/ac512507ac89c01ed6cd4ca53032f52cdb23ea59"}, {"url": "https://git.kernel.org/stable/c/3518cea837de4d106efa84ddac18a07b6de1384e"}, {"url": "https://git.kernel.org/stable/c/156012667b85ca7305cb363790d3ae8519a6f41e"}, {"url": "https://git.kernel.org/stable/c/7059cdb69f8e1a2707dd1e2f363348b507ed7707"}, {"url": "https://git.kernel.org/stable/c/58fe3bbddfec10c6b216096d8c0e517cd8463e3a"}, {"url": "https://git.kernel.org/stable/c/1213acb478a7181cd73eeaf00db430f1e45b1361"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtl8xxxu: add cancel_work_sync() for c2hcmd_work\n\nThe workqueue might still be running, when the driver is stopped. 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "dddedfa3b29a63c2ca4336663806a6128b8545b4", "status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "versionType": "git"}, {"lessThan": "ac512507ac89c01ed6cd4ca53032f52cdb23ea59", "status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "versionType": "git"}, {"lessThan": "3518cea837de4d106efa84ddac18a07b6de1384e", "status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "versionType": "git"}, {"lessThan": "156012667b85ca7305cb363790d3ae8519a6f41e", "status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "versionType": "git"}, {"lessThan": "7059cdb69f8e1a2707dd1e2f363348b507ed7707", "status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "versionType": "git"}, {"lessThan": "58fe3bbddfec10c6b216096d8c0e517cd8463e3a", "status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "versionType": "git"}, {"lessThan": "1213acb478a7181cd73eeaf00db430f1e45b1361", "status": "affected", "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"lessThan": "5.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.214", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.153", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.83", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.23", "versionType": "semver"}, {"lessThanOrEqual": "6.7.*", "status": "unaffected", "version": "6.7.11", "versionType": "semver"}, {"lessThanOrEqual": "6.8.*", "status": "unaffected", "version": "6.8.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"affectedData": [{"cpes": ["cpe:2.3:o:linux:linux_kernel:5.5:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"status": "affected", "version": "5.5"}]}, {"cpes": ["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "linux_kernel", "vendor": "linux", "versions": [{"lessThan": "58fe3bbddfec", "status": "affected", "version": "e542e66b7c2e", "versionType": "custom"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "65987874-467B-4D3B-91D6-68A129B34FB8", "versionEndExcluding": "5.10.214", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "ACB69438-845D-4E3C-B114-3140611F9C0B", "versionEndExcluding": "5.15.153", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "121A07F6-F505-4C47-86BF-9BB6CC7B6C19", "versionEndExcluding": "6.1.83", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E00814DC-0BA7-431A-9926-80FEB4A96C68", "versionEndExcluding": "6.6.23", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD", "versionEndExcluding": "6.7.11", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "543A75FF-25B8-4046-A514-1EA8EDD87AB1", "versionEndExcluding": "6.8.2", "versionStartIncluding": "6.8", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtl8xxxu: add cancel_work_sync() for c2hcmd_work\n\nThe workqueue might still be running, when the driver is stopped. To\navoid a use-after-free, call cancel_work_sync() in rtl8xxxu_stop()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: rtl8xxxu: agregue cancel_work_sync() para c2hcmd_work Es posible que la cola de trabajo a\u00fan est\u00e9 ejecut\u00e1ndose cuando se detiene el controlador. Para evitar un use-after-free, llame a cancel_work_sync() en rtl8xxxu_stop()."}], "id": "CVE-2024-27052", "lastModified": "2026-08-04T11:17:38.043", "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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.4, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-27052", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-05-13T15:54:30.303932Z", "version": "2.0.3"}}]}, "published": "2024-05-01T13:15:50.170", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1213acb478a7181cd73eeaf00db430f1e45b1361"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/156012667b85ca7305cb363790d3ae8519a6f41e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3518cea837de4d106efa84ddac18a07b6de1384e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/58fe3bbddfec10c6b216096d8c0e517cd8463e3a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7059cdb69f8e1a2707dd1e2f363348b507ed7707"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac512507ac89c01ed6cd4ca53032f52cdb23ea59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dddedfa3b29a63c2ca4336663806a6128b8545b4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1213acb478a7181cd73eeaf00db430f1e45b1361"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/156012667b85ca7305cb363790d3ae8519a6f41e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3518cea837de4d106efa84ddac18a07b6de1384e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/58fe3bbddfec10c6b216096d8c0e517cd8463e3a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7059cdb69f8e1a2707dd1e2f363348b507ed7707"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac512507ac89c01ed6cd4ca53032f52cdb23ea59"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dddedfa3b29a63c2ca4336663806a6128b8545b4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:3627", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:3618", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.5.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:5363", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.31.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-15T00:00:00Z"}, {"advisory": "RHSA-2024:5363", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.31.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-15T00:00:00Z"}, {"advisory": "RHSA-2024:5364", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.79.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-14T00:00:00Z"}, {"advisory": "RHSA-2024:5365", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.79.1.rt14.364.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-14T00:00:00Z"}], "bugzilla": {"description": "kernel: wifi: rtl8xxxu: add cancel_work_sync() for c2hcmd_work", "id": "2278417", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278417"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: rtl8xxxu: add cancel_work_sync() for c2hcmd_work\nThe workqueue might still be running, when the driver is stopped. To\navoid a use-after-free, call cancel_work_sync() in rtl8xxxu_stop().", "A vulnerability was found in the Linux kernel's net rtl8xxxu_core.c driver, where a race condition can lead to a use-after-free situation in the rtl8xxxu_stop() function. This occurs when the workqueue is still running but the driver has been stopped and can lead to c2hcmd_work attempting to access memory that has been freed. This issue can lead to memory corruption or crashes."], "name": "CVE-2024-27052", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-27052\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-27052\nhttps://lore.kernel.org/linux-cve-announce/2024050115-CVE-2024-27052-fb6d@gregkh/T"], "threat_severity": "Moderate"}