{
    "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"
            }
        }
    }
}