bpf: Fix insn_aux_data leak on verifier err_free_env path

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72401
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:13 UTC
Updated2026-08-17 06:19:06 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: bpf: Fix insn_aux_data leak on verifier err_free_env path When bpf_check() allocates env->insn_aux_data successfully but later fails to allocate env->succ, it jumps directly to err_free_env. The existing vfree(env->insn_aux_data) sits before the err_free_env label, so that direct jump bypasses it and leaks insn_aux_data. Move vfree(env->insn_aux_data) into err_free_env so all early and late exit paths release it consistently.

Risk And Classification

EPSS: 0.002100000 probability, percentile 0.114600000 (date 2026-08-17)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2f69c5685427308d2f312646779313f3677536bc d8df91756890de058646597367507b239a6d2025 git Not specified
CNA Linux Linux affected 2f69c5685427308d2f312646779313f3677536bc 26490a375cb9be9bac96b5171610fd85ca6c2305 git Not specified
CNA Linux Linux affected 6.19 Not specified
CNA Linux Linux unaffected 6.19 semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d8df91756890de058646597367507b239a6d2025 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/26490a375cb9be9bac96b5171610fd85ca6c2305 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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