{"api_version":"1","generated_at":"2026-10-01T11:59:27+00:00","cve":"CVE-2026-98048","urls":{"html":"https://cve.report/CVE-2026-98048","api":"https://cve.report/api/cve/CVE-2026-98048.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98048","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98048"},"summary":{"title":"bpf: don't rewrite bpf_fastcall patterns entered by a jump","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: don't rewrite bpf_fastcall patterns entered by a jump\n\nmark_fastcall_pattern_for_call() must ensure that matched\n\"spill; call; fill\" instruction series is not interrupted by a jump.\nOtherwise the rewrite applied by bpf_remove_fastcall_spills_fills()\nis not sound.\n\nRecord the instructions targeted by jumps in\ninsn_aux_data[*].jump_target when the CFG is built and use this flag\nto stop growing a pattern at such an instruction. Jumps to the first\nspill are fine.\n\nNote that existing insn_aux_data[*].jmp_point field can't be reused,\nas it marks subprogram return instructions.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:33","updated_at":"2026-09-25 11:17:33"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/0b1c83dc3c4401cd7e846548f62e3caf3d06742e","name":"https://git.kernel.org/stable/c/0b1c83dc3c4401cd7e846548f62e3caf3d06742e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/24adbc2c3bbe3385ce922587e1f8e837a68b3e25","name":"https://git.kernel.org/stable/c/24adbc2c3bbe3385ce922587e1f8e837a68b3e25","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98048","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98048","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b5f51bff1b66cedb62b5ba74a1878341204e057 24adbc2c3bbe3385ce922587e1f8e837a68b3e25 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b5f51bff1b66cedb62b5ba74a1878341204e057 0b1c83dc3c4401cd7e846548f62e3caf3d06742e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98048","cve":"CVE-2026-98048","epss":"0.001550000","percentile":"0.039790000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/linux/bpf_verifier.h","kernel/bpf/cfg.c","kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"24adbc2c3bbe3385ce922587e1f8e837a68b3e25","status":"affected","version":"5b5f51bff1b66cedb62b5ba74a1878341204e057","versionType":"git"},{"lessThan":"0b1c83dc3c4401cd7e846548f62e3caf3d06742e","status":"affected","version":"5b5f51bff1b66cedb62b5ba74a1878341204e057","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/linux/bpf_verifier.h","kernel/bpf/cfg.c","kernel/bpf/verifier.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc2","versionStartIncluding":"6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: don't rewrite bpf_fastcall patterns entered by a jump\n\nmark_fastcall_pattern_for_call() must ensure that matched\n\"spill; call; fill\" instruction series is not interrupted by a jump.\nOtherwise the rewrite applied by bpf_remove_fastcall_spills_fills()\nis not sound.\n\nRecord the instructions targeted by jumps in\ninsn_aux_data[*].jump_target when the CFG is built and use this flag\nto stop growing a pattern at such an instruction. Jumps to the first\nspill are fine.\n\nNote that existing insn_aux_data[*].jmp_point field can't be reused,\nas it marks subprogram return instructions."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:23:57.956Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/24adbc2c3bbe3385ce922587e1f8e837a68b3e25"},{"url":"https://git.kernel.org/stable/c/0b1c83dc3c4401cd7e846548f62e3caf3d06742e"}],"title":"bpf: don't rewrite bpf_fastcall patterns entered by a jump","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98048","datePublished":"2026-09-25T10:23:57.956Z","dateReserved":"2026-09-25T10:19:56.072Z","dateUpdated":"2026-09-25T10:23:57.956Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:33","lastModifiedDate":"2026-09-25 11:17:33","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98048","Ordinal":"1","Title":"bpf: don't rewrite bpf_fastcall patterns entered by a jump","CVE":"CVE-2026-98048","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98048","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: don't rewrite bpf_fastcall patterns entered by a jump\n\nmark_fastcall_pattern_for_call() must ensure that matched\n\"spill; call; fill\" instruction series is not interrupted by a jump.\nOtherwise the rewrite applied by bpf_remove_fastcall_spills_fills()\nis not sound.\n\nRecord the instructions targeted by jumps in\ninsn_aux_data[*].jump_target when the CFG is built and use this flag\nto stop growing a pattern at such an instruction. Jumps to the first\nspill are fine.\n\nNote that existing insn_aux_data[*].jmp_point field can't be reused,\nas it marks subprogram return instructions.","Type":"Description","Title":"bpf: don't rewrite bpf_fastcall patterns entered by a jump"}]}}}