CVE-2022-50028

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It is not reached by USB host packet processing; prior gadgetfs/FunctionFS API bugs (e.g. CVE-2024-35815, CVE-2024-36894) are scored Local for the same reason.\nAC:L - The attacker controls both sides of the race: they drive sync ep I/O, deliver a signal to interrupt `wait_for_completion_interruptible()`, and can force endpoint teardown (e.g. close ep0 \u2192 `usb_gadget_unregister_driver` \u2192 `destroy_ep_files`). No condition outside attacker influence is required.\nPR:L - Gadgetfs endpoint nodes are created with configurable `default_uid`/`default_gid`/`default_perm`, and realistic gadget deployments (Android/embedded USB gadget daemons) expose ep files to unprivileged service uids, matching FunctionFS `uid=`/`gid=`/`fmode=` precedent. No init-namespace root is required once those nodes are openable.\nUI:N - The attacker opens the endpoint file, issues read/write, signals their own wait, and triggers teardown themselves. No separate victim action (mount, confirm, or open) is required beyond an already-active gadget deployment.\nS:U - Stack corruption from `complete()` on the freed on-stack completion stays within the same host kernel security authority. This is standard local kernel memory corruption, not a VM escape, IOMMU bypass, or sandbox boundary cross.\nC:H - `epio_complete()` calling `complete()` on a returned `DECLARE_COMPLETION_ONSTACK` writes into reused kernel stack memory; that stack use-after-free is memory corruption that can be leveraged for kernel information disclosure under CNA guidance.\nI:H - `complete()` performs locked writes (`done++`, waiter wakeups) into whatever reused the stack frame, corrupting kernel stack control/data state and enabling control-flow hijack. Out-of-lifetime stack writes are scored High integrity.\nA:H - Completing into freed stack reliably corrupts stack frames or hits hardening checks, causing kernel oops/panic. The attacker can retrigger the interrupt-and-teardown sequence for sustained denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/legacy/inode.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "67a4874461422e633236a0286a01b483cd647113", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "118d967ce00a3d128bf731b35e4e2cb0facf5f00", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "77040efe59a141286d090c8a0d37c65a355a1832", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ca06b4cde54f8ec8be3aa53fd339bd56e62c12b3", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9ac14f973cb91f0c01776517e6d50981f32b8038", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "94aadba8d000d5de56af4ce8da3f334f21bf7a79", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2b06d5d97c0e067108a122986767731d40742138", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "04cb742d4d8f30dc2e83b46ac317eec09191c68e", "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/usb/gadget/legacy/inode.c"], "versions": [{"version": "2.6.12", "status": "affected"}, {"version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.326", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.291", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.256", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.211", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.138", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.63", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19.4", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0", "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": "2.6.12", "versionEndExcluding": "4.9.326"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.14.291"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "4.19.256"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.4.211"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.138"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.63"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.19.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/67a4874461422e633236a0286a01b483cd647113"}, {"url": "https://git.kernel.org/stable/c/118d967ce00a3d128bf731b35e4e2cb0facf5f00"}, {"url": "https://git.kernel.org/stable/c/77040efe59a141286d090c8a0d37c65a355a1832"}, {"url": "https://git.kernel.org/stable/c/ca06b4cde54f8ec8be3aa53fd339bd56e62c12b3"}, {"url": "https://git.kernel.org/stable/c/9ac14f973cb91f0c01776517e6d50981f32b8038"}, {"url": "https://git.kernel.org/stable/c/94aadba8d000d5de56af4ce8da3f334f21bf7a79"}, {"url": "https://git.kernel.org/stable/c/2b06d5d97c0e067108a122986767731d40742138"}, {"url": "https://git.kernel.org/stable/c/04cb742d4d8f30dc2e83b46ac317eec09191c68e"}], "title": "gadgetfs: ep_io - wait until IRQ finishes", "x_generator": {"engine": "bippy-1.2.0"}}}}

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Si wait_for_completion_interruptible() se interrumpe, debemos esperar hasta que finalice la IRQ. De lo contrario, la ejecuci\u00f3n de complete() desde epio_complete() puede da\u00f1ar la pila."}], "id": "CVE-2022-50028", "lastModified": "2026-08-04T10:18:03.417", "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": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-06-18T11:15:31.097", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/04cb742d4d8f30dc2e83b46ac317eec09191c68e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/118d967ce00a3d128bf731b35e4e2cb0facf5f00"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2b06d5d97c0e067108a122986767731d40742138"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67a4874461422e633236a0286a01b483cd647113"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/77040efe59a141286d090c8a0d37c65a355a1832"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/94aadba8d000d5de56af4ce8da3f334f21bf7a79"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9ac14f973cb91f0c01776517e6d50981f32b8038"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ca06b4cde54f8ec8be3aa53fd339bd56e62c12b3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: gadgetfs: ep_io - wait until IRQ finishes", "id": "2373467", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373467"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ngadgetfs: ep_io - wait until IRQ finishes\nafter usb_ep_queue() if wait_for_completion_interruptible() is\ninterrupted we need to wait until IRQ gets finished.\nOtherwise complete() from epio_complete() can corrupt stack."], "name": "CVE-2022-50028", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50028\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50028\nhttps://lore.kernel.org/linux-cve-announce/2025061838-CVE-2022-50028-5f5e@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-06-23T08:36:33.487732+00:00", "updated": "2025-06-23T08:36:33.487782+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}