2 lines
7.0 KiB
JSON
2 lines
7.0 KiB
JSON
{"affected":[{"affectedData":[{"product":"Linux kernel","vendor":"Linux","versions":[{"lessThan":"v5.13-rc4","status":"affected","version":"trunk","versionType":"custom"},{"lessThan":"v5.12.4","status":"affected","version":"linux-5.12.y","versionType":"custom"},{"lessThan":"v5.11.21","status":"affected","version":"linux-5.11.y","versionType":"custom"},{"lessThan":"v5.10.37","status":"affected","version":"linux-5.10.y","versionType":"custom"},{"lessThan":"5.8*","status":"affected","version":"v5.8","versionType":"custom"}]}],"source":"security@ubuntu.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","matchCriteriaId":"CD2F1C00-3D81-452B-AE61-0B2C1A536A1D","versionEndExcluding":"5.10.37","versionStartIncluding":"5.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","matchCriteriaId":"8CBB94EC-EC33-4464-99C5-03E5542715F0","versionEndExcluding":"5.11.21","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","matchCriteriaId":"D8C7052F-1B7B-4327-9C2B-84EBF3243838","versionEndExcluding":"5.12.4","versionStartIncluding":"5.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:-:*:*:*:*:*:*","matchCriteriaId":"8F0E7012-0BA3-4E6A-ADE9-57973CBDEE28","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*","matchCriteriaId":"0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*","matchCriteriaId":"96AC23B2-D46A-49D9-8203-8E1BEDCA8532","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*","matchCriteriaId":"DA610E30-717C-4700-9F77-A3C9244F3BFD","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*","matchCriteriaId":"902B8056-9E37-443B-8905-8AA93E2447FB","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:20.10:*:*:*:*:*:*:*","matchCriteriaId":"338B3AAC-C147-4A31-95E7-6E8A6FB4B3FC","vulnerable":true},{"criteria":"cpe:2.3:o:canonical:ubuntu_linux:21.04:*:*:*:*:*:*:*","matchCriteriaId":"8EF1C1CC-3FAE-4DE3-BC41-E5B14D5721F4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee (\"bpf, ringbuf: Deny reserve of buffers larger than ringbuf\") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 (\"bpf: Implement BPF ring buffer and verifier support for it\") (v5.8-rc1)."},{"lang":"es","value":"La función eBPF RINGBUF bpf_ringbuf_reserve() del kernel de Linux no comprobaba que el tamaño asignado fuera menor que el tamaño del ringbuf, lo que permitía a un atacante realizar escrituras fuera de los límites del kernel y, por tanto, la ejecución de código arbitrario. Este problema se solucionó a través del commit 4b81ccebaeee (\"bpf, ringbuf: Deny reserve of buffers larger than ringbuf\") (v5.13-rc4) y se retroalimentó a los kernels estables en versiones v5.12.4, v5.11.21 y v5.10.37. Se introdujo a través de 457f44363a88 (\"bpf: Implementar búfer de anillo BPF y soporte de verificador para ello\") (v5.8-rc1)"}],"id":"CVE-2021-3489","lastModified":"2026-06-17T04:05:11.590","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"HIGH","cvssData":{"accessComplexity":"LOW","accessVector":"LOCAL","authentication":"NONE","availabilityImpact":"COMPLETE","baseScore":7.2,"confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","vectorString":"AV:L/AC:L/Au:N/C:C/I:C/A:C","version":"2.0"},"exploitabilityScore":3.9,"impactScore":10.0,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":1.1,"impactScore":6.0,"source":"security@ubuntu.com","type":"Secondary"},{"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":"nvd@nist.gov","type":"Primary"}]},"published":"2021-06-04T02:15:07.047","references":[{"source":"security@ubuntu.com","tags":["Patch","Vendor Advisory"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=4b81ccebaeee885ab1aa1438133f2991e3a2b6ea"},{"source":"security@ubuntu.com","tags":["Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20210716-0004/"},{"source":"security@ubuntu.com","tags":["Third Party Advisory"],"url":"https://ubuntu.com/security/notices/USN-4949-1"},{"source":"security@ubuntu.com","tags":["Third Party Advisory"],"url":"https://ubuntu.com/security/notices/USN-4950-1"},{"source":"security@ubuntu.com","tags":["Mailing List","Third Party Advisory"],"url":"https://www.openwall.com/lists/oss-security/2021/05/11/10"},{"source":"security@ubuntu.com","tags":["Third Party Advisory","VDB Entry"],"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-590/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=4b81ccebaeee885ab1aa1438133f2991e3a2b6ea"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://security.netapp.com/advisory/ntap-20210716-0004/"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://ubuntu.com/security/notices/USN-4949-1"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://ubuntu.com/security/notices/USN-4950-1"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"url":"https://www.openwall.com/lists/oss-security/2021/05/11/10"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-590/"}],"sourceIdentifier":"security@ubuntu.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-119"},{"lang":"en","value":"CWE-787"}],"source":"security@ubuntu.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-787"}],"source":"nvd@nist.gov","type":"Primary"}]}
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