CVE-2026-80563

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80563", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.767Z", "datePublished": "2026-08-26T14:37:27.759Z", "dateUpdated": "2026-08-26T14:37:27.759Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-26T14:37:27.759Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: sloppy-logic-analyzer: fix use-after-free via debugfs trigger on unbind\n\nThe \"trigger\" debugfs file has a hand-rolled ->write handler\n(trigger_write()) that dereferences the per-device gpio_la_poll_priv. The\nfile is created with debugfs_create_file_unsafe(), and the handler never\ntakes a debugfs reference. Nothing keeps the object alive while the\nhandler runs.\n\npriv is allocated with devm_kzalloc(). devres frees it when the platform\ndevice is unbound. debugfs_create_file_unsafe() installs no full_proxy\nwrapper, so debugfs_remove_recursive() in gpio_la_poll_remove() does not\nwait for an in-flight trigger_write(). The blob_lock taken there does not\nhelp, because trigger_write() never takes it. A write that races an unbind\ntherefore writes into freed memory:\n\n trigger_write() gpio_la_poll_remove()\n priv = m->private\n buf = memdup_user() [may sleep]\n mutex_lock(&priv->blob_lock)\n debugfs_remove_recursive() [no wait]\n mutex_unlock(&priv->blob_lock)\n (remove returns; devres frees priv)\n priv->trig_data = buf <-- use-after-free write\n priv->trig_len = count\n\nThe race is reachable by root via\n/sys/bus/platform/drivers/gpio-sloppy-logic-analyzer/unbind.\n\nCreate \"trigger\" with debugfs_create_file() instead. Its full_proxy\nwrapper makes debugfs_remove_recursive() drain any in-flight ->write\nbefore it returns.\n\nThe use-after-free is confirmed under KASAN with a minimal reproducer of\nthe same debugfs_create_file_unsafe() plus devm_kzalloc() pattern\n(available on request); it produces a slab-use-after-free write in the\nhandler."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpio/gpio-sloppy-logic-analyzer.c"], "versions": [{"version": "7828b7bbbf2074dd7dd14d87f50bc5ce9036d692", "lessThan": "49a1ebb1ef2c8ada300c174b65273810abb4e326", "status": "affected", "versionType": "git"}, {"version": "7828b7bbbf2074dd7dd14d87f50bc5ce9036d692", "lessThan": "23e9f32c0c7d2043e39655cff5ee3ddf29a43f80", "status": "affected", "versionType": "git"}, {"version": "7828b7bbbf2074dd7dd14d87f50bc5ce9036d692", "lessThan": "24bef4918f6ab806260476e2f93d8f791fd17449", "status": "affected", "versionType": "git"}, {"version": "7828b7bbbf2074dd7dd14d87f50bc5ce9036d692", "lessThan": "44f3468a0aef1aabdad551898ab7cfa2a9d20e99", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpio/gpio-sloppy-logic-analyzer.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.105", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.46", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.10", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12.105"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.1.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/49a1ebb1ef2c8ada300c174b65273810abb4e326"}, {"url": "https://git.kernel.org/stable/c/23e9f32c0c7d2043e39655cff5ee3ddf29a43f80"}, {"url": "https://git.kernel.org/stable/c/24bef4918f6ab806260476e2f93d8f791fd17449"}, {"url": "https://git.kernel.org/stable/c/44f3468a0aef1aabdad551898ab7cfa2a9d20e99"}], "title": "gpio: sloppy-logic-analyzer: fix use-after-free via debugfs trigger on unbind", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpio/gpio-sloppy-logic-analyzer.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "49a1ebb1ef2c8ada300c174b65273810abb4e326", "status": "affected", "version": "7828b7bbbf2074dd7dd14d87f50bc5ce9036d692", "versionType": "git"}, {"lessThan": "23e9f32c0c7d2043e39655cff5ee3ddf29a43f80", "status": "affected", "version": "7828b7bbbf2074dd7dd14d87f50bc5ce9036d692", "versionType": "git"}, {"lessThan": "24bef4918f6ab806260476e2f93d8f791fd17449", "status": "affected", "version": "7828b7bbbf2074dd7dd14d87f50bc5ce9036d692", "versionType": "git"}, {"lessThan": "44f3468a0aef1aabdad551898ab7cfa2a9d20e99", "status": "affected", "version": "7828b7bbbf2074dd7dd14d87f50bc5ce9036d692", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpio/gpio-sloppy-logic-analyzer.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"lessThan": "6.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.105", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.46", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: sloppy-logic-analyzer: fix use-after-free via debugfs trigger on unbind\n\nThe \"trigger\" debugfs file has a hand-rolled ->write handler\n(trigger_write()) that dereferences the per-device gpio_la_poll_priv. The\nfile is created with debugfs_create_file_unsafe(), and the handler never\ntakes a debugfs reference. Nothing keeps the object alive while the\nhandler runs.\n\npriv is allocated with devm_kzalloc(). devres frees it when the platform\ndevice is unbound. debugfs_create_file_unsafe() installs no full_proxy\nwrapper, so debugfs_remove_recursive() in gpio_la_poll_remove() does not\nwait for an in-flight trigger_write(). The blob_lock taken there does not\nhelp, because trigger_write() never takes it. A write that races an unbind\ntherefore writes into freed memory:\n\n trigger_write() gpio_la_poll_remove()\n priv = m->private\n buf = memdup_user() [may sleep]\n mutex_lock(&priv->blob_lock)\n debugfs_remove_recursive() [no wait]\n mutex_unlock(&priv->blob_lock)\n (remove returns; devres frees priv)\n priv->trig_data = buf <-- use-after-free write\n priv->trig_len = count\n\nThe race is reachable by root via\n/sys/bus/platform/drivers/gpio-sloppy-logic-analyzer/unbind.\n\nCreate \"trigger\" with debugfs_create_file() instead. Its full_proxy\nwrapper makes debugfs_remove_recursive() drain any in-flight ->write\nbefore it returns.\n\nThe use-after-free is confirmed under KASAN with a minimal reproducer of\nthe same debugfs_create_file_unsafe() plus devm_kzalloc() pattern\n(available on request); it produces a slab-use-after-free write in the\nhandler."}], "id": "CVE-2026-80563", "lastModified": "2026-08-26T15:17:11.310", "metrics": {}, "published": "2026-08-26T15:17:11.310", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/23e9f32c0c7d2043e39655cff5ee3ddf29a43f80"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/24bef4918f6ab806260476e2f93d8f791fd17449"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/44f3468a0aef1aabdad551898ab7cfa2a9d20e99"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/49a1ebb1ef2c8ada300c174b65273810abb4e326"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: gpio: sloppy-logic-analyzer: fix use-after-free via debugfs trigger on unbind", "id": "2524482", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524482"}, "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": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ngpio: sloppy-logic-analyzer: fix use-after-free via debugfs trigger on unbind\nThe \"trigger\" debugfs file has a hand-rolled ->write handler\n(trigger_write()) that dereferences the per-device gpio_la_poll_priv. The\nfile is created with debugfs_create_file_unsafe(), and the handler never\ntakes a debugfs reference. Nothing keeps the object alive while the\nhandler runs.\npriv is allocated with devm_kzalloc(). devres frees it when the platform\ndevice is unbound. debugfs_create_file_unsafe() installs no full_proxy\nwrapper, so debugfs_remove_recursive() in gpio_la_poll_remove() does not\nwait for an in-flight trigger_write(). The blob_lock taken there does not\nhelp, because trigger_write() never takes it. A write that races an unbind\ntherefore writes into freed memory:\ntrigger_write() gpio_la_poll_remove()\npriv = m->private\nbuf = memdup_user() [may sleep]\nmutex_lock(&priv->blob_lock)\ndebugfs_remove_recursive() [no wait]\nmutex_unlock(&priv->blob_lock)\n(remove returns; devres frees priv)\npriv->trig_data = buf <-- use-after-free write\npriv->trig_len = count\nThe race is reachable by root via\n/sys/bus/platform/drivers/gpio-sloppy-logic-analyzer/unbind.\nCreate \"trigger\" with debugfs_create_file() instead. Its full_proxy\nwrapper makes debugfs_remove_recursive() drain any in-flight ->write\nbefore it returns.\nThe use-after-free is confirmed under KASAN with a minimal reproducer of\nthe same debugfs_create_file_unsafe() plus devm_kzalloc() pattern\n(available on request); it produces a slab-use-after-free write in the\nhandler.", "A flaw was found in the Linux kernel's `gpio: sloppy-logic-analyzer` component. A local attacker with root privileges can exploit a race condition during the unbinding of a platform device. This vulnerability allows writing into memory that has already been freed, which can lead to system instability (Denial of Service) or potentially enable arbitrary code execution."], "name": "CVE-2026-80563", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80563\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80563\nhttps://lore.kernel.org/linux-cve-announce/2026082611-CVE-2026-80563-188c@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7828b7bbbf2074dd7dd14d87f50bc5ce9036d692,49a1ebb1ef2c8ada300c174b65273810abb4e326)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7828b7bbbf2074dd7dd14d87f50bc5ce9036d692,44f3468a0aef1aabdad551898ab7cfa2a9d20e99)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7828b7bbbf2074dd7dd14d87f50bc5ce9036d692,24bef4918f6ab806260476e2f93d8f791fd17449)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7828b7bbbf2074dd7dd14d87f50bc5ce9036d692,23e9f32c0c7d2043e39655cff5ee3ddf29a43f80)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.105,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.46,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.10,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-26T16:30:09.774256+00:00", "updated": "2026-08-28T17:45:04.141506+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}