In the Linux kernel, the following vulnerability has been resolved:
bpf: Propagate error from htab_lock_bucket() to userspace
In __htab_map_lookup_and_delete_batch() if htab_lock_bucket() returns -EBUSY, it will go to next bucket. Going to next bucket may not only skip the elements in current bucket silently, but also incur out-of-bound memory access or expose kernel memory to userspace if current bucket_cnt is greater than bucket_size or zero.
Fixing it by stopping batch operation and returning -EBUSY when htab_lock_bucket() fails, and the application can retry or skip the busy batch as needed.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-develUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade python-perfUpgrade kernel-livepatch-5.15.75-48.135Upgrade python-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-tools | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Oct 6, 2025 | Oct 6, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Oct 4, 2025 |
| Ubuntu | — | Upgrade linux-hwe-5.15Upgrade linux-realtimeUpgrade linux-riscv-5.15Upgrade linux-nvidiaUpgrade linux-kvmUpgrade linux-oracle-5.15Upgrade linux-gcp-5.15Upgrade linux-gkeopUpgrade linux-oracleUpgrade linux-raspiUpgrade linux-azure-5.15Upgrade linux-azure-fdeUpgrade linux-lowlatencyUpgrade linux-ibmUpgrade linux-intel-iotgUpgrade linux-gcpUpgrade linux-intel-iotg-5.15Upgrade linux-azureUpgrade linux-awsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-gkeUpgrade linux-aws-5.15Upgrade linux | Oct 10, 2025 | Oct 4, 2025 |
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