gsd-2023-0240
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation. In the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161.
Aliases
Aliases
{ GSD: { alias: "CVE-2023-0240", id: "GSD-2023-0240", }, gsd: { metadata: { exploitCode: "unknown", remediation: "unknown", reportConfidence: "confirmed", type: "vulnerability", }, osvSchema: { aliases: [ "CVE-2023-0240", ], details: "There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation. In the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161.", id: "GSD-2023-0240", modified: "2023-12-13T01:20:22.753013Z", schema_version: "1.4.0", }, }, namespaces: { "cve.org": { CVE_data_meta: { ASSIGNER: "security@google.com", ID: "CVE-2023-0240", STATE: "PUBLIC", }, affects: { vendor: { vendor_data: [ { product: { product_data: [ { product_name: "Linux Kernel", version: { version_data: [ { version_affected: "=", version_value: "5.10", }, ], }, }, ], }, vendor_name: "Linux", }, ], }, }, credits: [ { lang: "en", value: "Bing-Jhong Billy Jheng of Starlabs", }, ], data_format: "MITRE", data_type: "CVE", data_version: "4.0", description: { description_data: [ { lang: "eng", value: "There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation. In the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161.", }, ], }, generator: { engine: "Vulnogram 0.1.0-dev", }, impact: { cvss: [ { 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", }, ], }, problemtype: { problemtype_data: [ { description: [ { cweId: "CWE-416", lang: "eng", value: "CWE-416 Use After Free", }, ], }, ], }, references: { reference_data: [ { name: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring?h=linux-5.10.y&id=788d0824269bef539fe31a785b1517882eafed93", refsource: "MISC", url: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring?h=linux-5.10.y&id=788d0824269bef539fe31a785b1517882eafed93", }, { name: "https://github.com/gregkh/linux/commit/1e6fa5216a0e59ef02e8b6b40d553238a3b81d49", refsource: "MISC", url: "https://github.com/gregkh/linux/commit/1e6fa5216a0e59ef02e8b6b40d553238a3b81d49", }, { name: "https://kernel.dance/#788d0824269bef539fe31a785b1517882eafed93", refsource: "MISC", url: "https://kernel.dance/#788d0824269bef539fe31a785b1517882eafed93", }, ], }, source: { discovery: "EXTERNAL", }, }, "nvd.nist.gov": { configurations: { CVE_data_version: "4.0", nodes: [ { children: [], cpe_match: [ { cpe23Uri: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", cpe_name: [], versionEndExcluding: "5.10", vulnerable: true, }, ], operator: "OR", }, ], }, cve: { CVE_data_meta: { ASSIGNER: "security@google.com", ID: "CVE-2023-0240", }, data_format: "MITRE", data_type: "CVE", data_version: "4.0", description: { description_data: [ { lang: "en", value: "There is a logic error in io_uring's implementation which can be used to trigger a use-after-free vulnerability leading to privilege escalation. In the io_prep_async_work function the assumption that the last io_grab_identity call cannot return false is not true, and in this case the function will use the init_cred or the previous linked requests identity to do operations instead of using the current identity. This can lead to reference counting issues causing use-after-free. We recommend upgrading past version 5.10.161.", }, ], }, problemtype: { problemtype_data: [ { description: [ { lang: "en", value: "CWE-416", }, ], }, ], }, references: { reference_data: [ { name: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring?h=linux-5.10.y&id=788d0824269bef539fe31a785b1517882eafed93", refsource: "MISC", tags: [ "Mailing List", "Patch", "Vendor Advisory", ], url: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/io_uring?h=linux-5.10.y&id=788d0824269bef539fe31a785b1517882eafed93", }, { name: "https://github.com/gregkh/linux/commit/1e6fa5216a0e59ef02e8b6b40d553238a3b81d49", refsource: "MISC", tags: [ "Patch", "Third Party Advisory", ], url: "https://github.com/gregkh/linux/commit/1e6fa5216a0e59ef02e8b6b40d553238a3b81d49", }, { name: "https://kernel.dance/#788d0824269bef539fe31a785b1517882eafed93", refsource: "MISC", tags: [ "Patch", "Third Party Advisory", ], url: "https://kernel.dance/#788d0824269bef539fe31a785b1517882eafed93", }, ], }, }, impact: { baseMetricV3: { cvssV3: { 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, }, }, lastModifiedDate: "2023-02-06T21:48Z", publishedDate: "2023-01-30T14:15Z", }, }, }
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