CVE-2026-72401bpf: Fix insn_aux_data leak on verifier err_free_env path
Updated under an hour ago ()
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In 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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 2f69c5685427308d2f312646779313f3677536bc before d8df91756890de058646597367507b239a6d2025; from 2f69c5685427308d2f312646779313f3677536bc before 26490a375cb9be9bac96b5171610fd85ca6c2305 | CNA record |
References
- https://git.kernel.org/stable/c/d8df91756890de058646597367507b239a6d2025
- https://git.kernel.org/stable/c/26490a375cb9be9bac96b5171610fd85ca6c2305
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.