{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2022-3176", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "assignerShortName": "Google", "dateUpdated": "2024-09-16T18:44:51.756Z", "dateReserved": "2022-09-12T00:00:00", "datePublished": "2022-09-16T13:55:09.907980Z"}, "containers": {"cna": {"title": "Use-after-free in io_uring in Linux Kernel", "datePublic": "2022-08-31T00:00:00", "providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2023-02-16T00:00:00"}, "descriptions": [{"lang": "en", "value": "There exists a use-after-free in io_uring in the Linux kernel. Signalfd_poll() and binder_poll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the io_uring poll doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with io_uring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659"}], "affected": [{"vendor": "Linux", "product": "Kernel", "versions": [{"version": "unspecified", "lessThan": "fc78b2fc21f10c4c9c4d5d659a685710ffa63659", "status": "affected", "versionType": "custom"}]}], "references": [{"url": "https://kernel.dance/#fc78b2fc21f10c4c9c4d5d659a685710ffa63659"}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?h=linux-5.4.y&id=fc78b2fc21f10c4c9c4d5d659a685710ffa63659"}, {"name": "DSA-5257", "tags": ["vendor-advisory"], "url": "https://www.debian.org/security/2022/dsa-5257"}, {"name": "[debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"}, {"url": "https://security.netapp.com/advisory/ntap-20230216-0003/"}], "credits": [{"lang": "en", "value": "Bing-Jhong Billy Jheng <billy@starlabs.sg>"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-416 Use After Free", "cweId": "CWE-416"}]}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "source": {"discovery": "EXTERNAL"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T01:00:10.627Z"}, "title": "CVE Program Container", "references": [{"url": "https://kernel.dance/#fc78b2fc21f10c4c9c4d5d659a685710ffa63659", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?h=linux-5.4.y&id=fc78b2fc21f10c4c9c4d5d659a685710ffa63659", "tags": ["x_transferred"]}, {"name": "DSA-5257", "tags": ["vendor-advisory", "x_transferred"], "url": "https://www.debian.org/security/2022/dsa-5257"}, {"name": "[debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update", "tags": ["mailing-list", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"}, {"url": "https://security.netapp.com/advisory/ntap-20230216-0003/", "tags": ["x_transferred"]}]}]}}

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{"bugzilla": {"description": "kernel: use-after-free in io_uring for POLLFREE notification with Signalfd_poll() and binder_poll()", "id": "2127890", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2127890"}, "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"}, "cwe": "CWE-416", "details": ["There exists a use-after-free in io_uring in the Linux kernel. Signalfd_poll() and binder_poll() use a waitqueue whose lifetime is the current task. It will send a POLLFREE notification to all waiters before the queue is freed. Unfortunately, the io_uring poll doesn't handle POLLFREE. This allows a use-after-free to occur if a signalfd or binder fd is polled with io_uring poll, and the waitqueue gets freed. We recommend upgrading past commit fc78b2fc21f10c4c9c4d5d659a685710ffa63659", "A use-after-free flaw was found in io_uring in the Linux kernel. This flaw allows a local user to trigger the issue if a signalfd or binder fd is polled with the io_uring poll due to a lack of io_uring POLLFREE handling."], "name": "CVE-2022-3176", "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: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": "2022-09-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-3176\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-3176\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fc78b2fc21f10c4c9c4d5d659a685710ffa63659\nhttps://kernel.dance/#fc78b2fc21f10c4c9c4d5d659a685710ffa63659"], "threat_severity": "Moderate"}