{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53036","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.380Z","datePublished":"2026-06-24T16:29:43.449Z","dateUpdated":"2026-06-28T06:38:20.137Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:38:20.137Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, arm64: Fix off-by-one in check_imm signed range check\n\ncheck_imm(bits, imm) is used in the arm64 BPF JIT to verify that\na branch displacement (in arm64 instruction units) fits into the\nsigned N-bit immediate field of a B, B.cond or CBZ/CBNZ encoding\nbefore it is handed to the encoder. The macro currently tests for\n(imm > 0 && imm >> bits) || (imm < 0 && ~imm >> bits) which admits\nvalues in [-2^N, 2^N) — effectively a signed (N+1)-bit range. A\nsigned N-bit field only holds [-2^(N-1), 2^(N-1)), so the check\nadmits one extra bit of range on each side.\n\nIn particular, for check_imm19(), values in [2^18, 2^19) slip past\nthe check but do not fit into the 19-bit signed imm19 field of\nB.cond. aarch64_insn_encode_immediate() then masks the raw value\ninto the 19-bit field, setting bit 18 (the sign bit) and flipping\na forward branch into a backward one. Same class of issue exists\nfor check_imm26() and the B/BL encoding. Shift by (bits - 1)\ninstead of bits so the actual signed N-bit range is enforced."}],"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"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/net/bpf_jit_comp.c"],"versions":[{"version":"e54bcde3d69d40023ae77727213d14f920eb264a","lessThan":"a5dfeb3b61065039488342d43ae06d4729d955d4","status":"affected","versionType":"git"},{"version":"e54bcde3d69d40023ae77727213d14f920eb264a","lessThan":"7fd3b41260c6120e7b60164afea5d961af6224f9","status":"affected","versionType":"git"},{"version":"e54bcde3d69d40023ae77727213d14f920eb264a","lessThan":"6927f0d6794aa73318bbfa929f1ff6065b0620df","status":"affected","versionType":"git"},{"version":"e54bcde3d69d40023ae77727213d14f920eb264a","lessThan":"1a113b5497297871699cd498b1b83542e0db7f15","status":"affected","versionType":"git"},{"version":"e54bcde3d69d40023ae77727213d14f920eb264a","lessThan":"fb74defa1cca1a73177c0c761e641332e4f979a3","status":"affected","versionType":"git"},{"version":"e54bcde3d69d40023ae77727213d14f920eb264a","lessThan":"1dd8be4ec722ce54e4cace59f3a4ba658111b3ec","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/net/bpf_jit_comp.c"],"versions":[{"version":"3.18","status":"affected"},{"version":"0","lessThan":"3.18","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.141","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.91","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.33","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"3.18","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a5dfeb3b61065039488342d43ae06d4729d955d4"},{"url":"https://git.kernel.org/stable/c/7fd3b41260c6120e7b60164afea5d961af6224f9"},{"url":"https://git.kernel.org/stable/c/6927f0d6794aa73318bbfa929f1ff6065b0620df"},{"url":"https://git.kernel.org/stable/c/1a113b5497297871699cd498b1b83542e0db7f15"},{"url":"https://git.kernel.org/stable/c/fb74defa1cca1a73177c0c761e641332e4f979a3"},{"url":"https://git.kernel.org/stable/c/1dd8be4ec722ce54e4cace59f3a4ba658111b3ec"}],"title":"bpf, arm64: Fix off-by-one in check_imm signed range check","x_generator":{"engine":"bippy-1.2.0"}}}}