In the Linux kernel, the following vulnerability has been resolved:
bpf: Validate BTF repeated field counts before expansion
btf_parse_struct_metas() walks user-supplied BTF during BPF_BTF_LOAD, and btf_repeat_fields() expands repeatable fields from array elements into the fixed BTF_FIELDS_MAX scratch array used by btf_parse_fields().
The remaining-capacity check performs the expanded field count calculation in u32. A malformed BTF can wrap that calculation, causing the check to pass even when the expanded field count exceeds the scratch array capacity. The following memcpy() can then write past the end of the array.
Use checked addition and multiplication before copying repeated fields and reject impossible counts.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-livepatch-6.18.39-79.141Upgrade kernel6.12-headersUpgrade kernel6.12-modules-extraUpgrade kernel6.12Upgrade kernel6.12-debuginfo-common-aarch64Upgrade perf6.12Upgrade bpftool6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade perf6.18-debuginfoUpgrade bpftool6.12-debuginfoUpgrade kernel6.18-modules-extra-commonUpgrade microvm-kernel6.18Upgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.12-debuginfoUpgrade kernel6.18-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-tools-develUpgrade python3-perf6.12Upgrade bpftool6.18-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.18-develUpgrade kernel6.12-tools-develUpgrade bpftool6.12Upgrade perf6.12-debuginfoUpgrade kernel6.18-toolsUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.12-toolsUpgrade kernel6.12-debuginfoUpgrade kernel6.18Upgrade kernel6.12-develUpgrade kernel-livepatch-6.12.100-125.179Upgrade kernel6.18-modules-extraUpgrade kernel6.18-headersUpgrade python3-perf6.18Upgrade perf6.18 | Aug 18, 2026 | Jul 25, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Jul 28, 2026 | Jul 28, 2026 |
| Redhat_linux | — | No solution exists | Jul 29, 2026 | Jul 25, 2026 |
| Ubuntu | — | Upgrade linux-image-gcp-64kUpgrade linux-image-virtual-7.0Upgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-oem-7.0Upgrade linux-image-virtualUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-awsUpgrade linux-image-gke-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-realtimeUpgrade linux-image-oem-26.04aUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-gcpUpgrade linux-image-generic-7.0Upgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-aws-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-ibm-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-oem-26.04Upgrade linux-image-nvidia-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-gkeUpgrade linux-image-7.0.0-1013-oemUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-nvidiaUpgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-nvidia-bosUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-gke-64k-7.0Upgrade linux-image-generic-64kUpgrade linux-image-genericUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-realtime-7.0Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-raspiUpgrade linux-image-aws-64k-7.0Upgrade linux-image-oem-26.04bUpgrade linux-image-gcp-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-ibmUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-raspi-7.0Upgrade linux-image-realtime-64kUpgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-7.0.0-1012-aws | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 31, 2026 | Jul 25, 2026 |
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