{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98816","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.371Z","datePublished":"2026-10-18T15:49:05.616Z","dateUpdated":"2026-10-19T09:26:09.337Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-19T09:26:09.337Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix overflow of jump offset in constant blinding\n\nbpf_jit_blind_insn() rewrites 'if rX op imm goto off' into:\n\n  AX = imm ^ rnd\n  AX ^= rnd\n  if rX op AX goto off\n\nand subtracts 2 from off when the jump is backward. off is s16, so\n-32767 and -32768 wrap and the jump goes 32767 insns forward, past the\nend of the prog. The jump is inside the patch, hence bpf_adj_branches()\ndoesn't check it. The kernel crashes when such prog runs with\nbpf_jit_harden=2.\n\nReturn -ERANGE in such case. bpf_jit_blind_constants() fails the same\nway when blinding of other insns moves a jump out of range."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/core.c"],"versions":[{"version":"4f3446bb809f20ad56cadf712e6006815ae7a8f9","lessThan":"443328237113ee0ea515e506497334d871dbc2aa","status":"affected","versionType":"git"},{"version":"4f3446bb809f20ad56cadf712e6006815ae7a8f9","lessThan":"ad139384ecddb6f3e7e3c3c12765aafae0e39670","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/core.c"],"versions":[{"version":"4.7","status":"affected"},{"version":"0","lessThan":"4.7","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/443328237113ee0ea515e506497334d871dbc2aa"},{"url":"https://git.kernel.org/stable/c/ad139384ecddb6f3e7e3c3c12765aafae0e39670"}],"title":"bpf: Fix overflow of jump offset in constant blinding","x_generator":{"engine":"bippy-1.2.0"}}}}