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-tools-develUpgrade kernel-tools-debuginfoUpgrade kernelUpgrade kernel-headersUpgrade kernel-develUpgrade kernel-debuginfoUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-livepatch-5.15.75-48.135Upgrade python-perf-debuginfoUpgrade python-perfUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfo | 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 linuxUpgrade linux-awsUpgrade linux-gkeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-5.15Upgrade linux-bluefieldUpgrade linux-hwe-5.15Upgrade linux-realtimeUpgrade linux-gkeopUpgrade linux-azureUpgrade linux-azure-5.15Upgrade linux-oracleUpgrade linux-intel-iotgUpgrade linux-kvmUpgrade linux-azure-fdeUpgrade linux-raspiUpgrade linux-riscv-5.15Upgrade linux-oracle-5.15Upgrade linux-gcpUpgrade linux-ibmUpgrade linux-nvidiaUpgrade linux-lowlatencyUpgrade linux-gcp-5.15Upgrade linux-intel-iotg-5.15 | Oct 10, 2025 | Oct 4, 2025 |
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