{"id":"CVE-2026-72401","state":"PUBLISHED","title":"bpf: Fix insn_aux_data leak on verifier err_free_env path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix insn_aux_data leak on verifier err_free_env path\n\nWhen bpf_check() allocates env->insn_aux_data successfully but later\nfails to allocate env->succ, it jumps directly to err_free_env.\n\nThe existing vfree(env->insn_aux_data) sits before the err_free_env\nlabel, so that direct jump bypasses it and leaks insn_aux_data.\n\nMove vfree(env->insn_aux_data) into err_free_env so all early and late\nexit paths release it consistently.","publishedAt":"2026-08-15T05:56:26.197Z","updatedAt":"2026-08-17T05:13:58.017Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2f69c5685427308d2f312646779313f3677536bc","status":"affected","lessThan":"d8df91756890de058646597367507b239a6d2025","versionType":"git"},{"version":"2f69c5685427308d2f312646779313f3677536bc","status":"affected","lessThan":"26490a375cb9be9bac96b5171610fd85ca6c2305","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/verifier.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/verifier.c"]}],"references":["https://git.kernel.org/stable/c/d8df91756890de058646597367507b239a6d2025","https://git.kernel.org/stable/c/26490a375cb9be9bac96b5171610fd85ca6c2305"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72401.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72401","state":"PUBLISHED","datePublished":"2026-08-15T05:56:26.197Z","dateUpdated":"2026-08-17T05:13:58.017Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.925Z"},"containers":{"cna":{"title":"bpf: Fix insn_aux_data leak on verifier err_free_env path","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix insn_aux_data leak on verifier err_free_env path\n\nWhen bpf_check() allocates env->insn_aux_data successfully but later\nfails to allocate env->succ, it jumps directly to err_free_env.\n\nThe existing vfree(env->insn_aux_data) sits before the err_free_env\nlabel, so that direct jump bypasses it and leaks insn_aux_data.\n\nMove vfree(env->insn_aux_data) into err_free_env so all early and late\nexit paths release it consistently."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2f69c5685427308d2f312646779313f3677536bc","status":"affected","lessThan":"d8df91756890de058646597367507b239a6d2025","versionType":"git"},{"version":"2f69c5685427308d2f312646779313f3677536bc","status":"affected","lessThan":"26490a375cb9be9bac96b5171610fd85ca6c2305","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/verifier.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/bpf/verifier.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d8df91756890de058646597367507b239a6d2025"},{"url":"https://git.kernel.org/stable/c/26490a375cb9be9bac96b5171610fd85ca6c2305"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:13:58.017Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}