{"id":"CVE-2024-27050","state":"PUBLISHED","title":"libbpf: Use OPTS_SET() macro in bpf_xdp_query()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibbpf: Use OPTS_SET() macro in bpf_xdp_query()\n\nWhen the feature_flags and xdp_zc_max_segs fields were added to the libbpf\nbpf_xdp_query_opts, the code writing them did not use the OPTS_SET() macro.\nThis causes libbpf to write to those fields unconditionally, which means\nthat programs compiled against an older version of libbpf (with a smaller\nsize of the bpf_xdp_query_opts struct) will have its stack corrupted by\nlibbpf writing out of bounds.\n\nThe patch adding the feature_flags field has an early bail out if the\nfeature_flags field is not part of the opts struct (via the OPTS_HAS)\nmacro, but the patch adding xdp_zc_max_segs does not. For consistency, this\nfix just changes the assignments to both fields to use the OPTS_SET()\nmacro.","publishedAt":"2024-05-01T12:54:35.555Z","updatedAt":"2026-08-05T11:29:13.148Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"13ce2daa259a3bfbc9a5aeeee8b9a87058703731","status":"affected","lessThan":"fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c","versionType":"git"},{"version":"13ce2daa259a3bfbc9a5aeeee8b9a87058703731","status":"affected","lessThan":"682ddd62abd4bdcee7584246903e7a2df005fe0d","versionType":"git"},{"version":"13ce2daa259a3bfbc9a5aeeee8b9a87058703731","status":"affected","lessThan":"cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e","versionType":"git"},{"version":"13ce2daa259a3bfbc9a5aeeee8b9a87058703731","status":"affected","lessThan":"92a871ab9fa59a74d013bc04f321026a057618e7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["tools/lib/bpf/netlink.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["tools/lib/bpf/netlink.c"]}],"references":["https://git.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c","https://git.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0d","https://git.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e","https://git.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/27xxx/CVE-2024-27050.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-27050","state":"PUBLISHED","datePublished":"2024-05-01T12:54:35.555Z","dateUpdated":"2026-08-05T11:29:13.148Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.213Z"},"containers":{"cna":{"title":"libbpf: Use OPTS_SET() macro in bpf_xdp_query()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibbpf: Use OPTS_SET() macro in bpf_xdp_query()\n\nWhen the feature_flags and xdp_zc_max_segs fields were added to the libbpf\nbpf_xdp_query_opts, the code writing them did not use the OPTS_SET() macro.\nThis causes libbpf to write to those fields unconditionally, which means\nthat programs compiled against an older version of libbpf (with a smaller\nsize of the bpf_xdp_query_opts struct) will have its stack corrupted by\nlibbpf writing out of bounds.\n\nThe patch adding the feature_flags field has an early bail out if the\nfeature_flags field is not part of the opts struct (via the OPTS_HAS)\nmacro, but the patch adding xdp_zc_max_segs does not. For consistency, this\nfix just changes the assignments to both fields to use the OPTS_SET()\nmacro."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"13ce2daa259a3bfbc9a5aeeee8b9a87058703731","status":"affected","lessThan":"fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c","versionType":"git"},{"version":"13ce2daa259a3bfbc9a5aeeee8b9a87058703731","status":"affected","lessThan":"682ddd62abd4bdcee7584246903e7a2df005fe0d","versionType":"git"},{"version":"13ce2daa259a3bfbc9a5aeeee8b9a87058703731","status":"affected","lessThan":"cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e","versionType":"git"},{"version":"13ce2daa259a3bfbc9a5aeeee8b9a87058703731","status":"affected","lessThan":"92a871ab9fa59a74d013bc04f321026a057618e7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["tools/lib/bpf/netlink.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["tools/lib/bpf/netlink.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c"},{"url":"https://git.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0d"},{"url":"https://git.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e"},{"url":"https://git.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7"}],"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","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The defect is in the userspace libbpf library and is reached by a local process calling bpf_xdp_query(), which issues local netlink (RTM_GETLINK / netdev genl) requests. No remote or adjacent network input reaches the vulnerable write.\nAC:L - The out-of-bounds write is fully deterministic — any binary compiled against a pre-6.6 bpf_xdp_query_opts (sz==40) triggers the 4-byte write at offset 40 on every successful query, with no race or memory-layout luck required.\nPR:L - An unprivileged local user can execute an affected libbpf consumer; the RTM_GETLINK dump and NETDEV_CMD_DEV_GET queries on the path require no capabilities, and the forged-netlink-reply amplification also needs only ordinary local user access.\nUI:N - The attacker runs the affected libbpf-linked program directly, and the corrupting write happens automatically inside bpf_xdp_query() with no victim action required.\nS:U - The out-of-bounds write lands on the calling process's own stack; libbpf and its caller are the same security authority, and no sandbox, VM, or IOMMU boundary is crossed.\nC:H - The bug is an out-of-bounds write whose value is attacker-influenceable via a forged netlink reply (libbpf_netlink_recv() never verifies the sender is the kernel); corrupting an adjacent stack local such as a length or index in a privileged XDP management process can be leveraged to disclose that process's memory.\nI:H - This is a stack out-of-bounds write of a 32-bit value past the caller's bpf_xdp_query_opts object, and per the OOB-write mapping it constitutes memory corruption of adjacent state that can be steered toward control-flow or data-flow tampering in the affected process.\nA:H - Overwriting four bytes beyond the caller's stack object can clobber an adjacent local or stack metadata, causing __stack_chk_fail aborts or SIGSEGV crashes of the affected application, and the write occurs on every query so it is repeatable at will."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T11:29:13.148Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.7.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.8.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"linux","product":"acrn","defaultStatus":"unknown","versions":[{"version":"6.8.2","status":"unaffected"}],"cpes":["cpe:2.3:o:linux:acrn:*:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"6.7.11","status":"unaffected"}],"cpes":["cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"]},{"vendor":"linux","product":"linux_kernel","defaultStatus":"unknown","versions":[{"version":"6.6.23","status":"unaffected"}],"cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2024-05-16T18:27:13.162013Z","id":"CVE-2024-27050","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","type":"CWE","lang":"en","description":"CWE-787 Out-of-bounds Write"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-02-05T20:58:16.092Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/fa5bef5e80c6a3321b2b1a7070436f3bc5daf07c","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/682ddd62abd4bdcee7584246903e7a2df005fe0d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/cd3be9843247edb8fc6fcd8d8237cbce2bc19f5e","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/92a871ab9fa59a74d013bc04f321026a057618e7","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T00:21:05.913Z"}}]}}}