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CVE-2021-29648 PUBLISHED

An issue was discovered in the Linux kernel before 5.11.11. The BPF subsystem does not properly consider that resolved_ids and resolved_sizes are intentionally uninitialized in the vmlinux BPF Type Format (BTF), which can cause a system crash upon an unexpected access attempt (in map_create in kernel/bpf/syscall.c or check_btf_info in kernel/bpf/verifier.c), aka CID-350a5c4dd245.

EPSS 0.11% · 29.1th percentile

Risk Scores

EPSS Score
0.11%
29.1th percentile

Affected Products

VendorProductVersions
Ubuntu:18.04:LTSlinux-gcp-edge4.18.0-1012.13~18.04.1, 4.18.0-1013.14~18.04.1, 4.18.0-1015.16~18.04.1
Ubuntu:18.04:LTSlinux-azure4.18.0-1023.24~18.04.1, 4.18.0-1025.27~18.04.1, 5.0.0-1014.14~18.04.1
Ubuntu:18.04:LTSlinux-hwe-edge5.3.0-24.26~18.04.2, 5.0.0-15.16~18.04.1, 5.0.0-16.17~18.04.1
Ubuntu:20.04:LTSlinux-raspi25.4.0-1004.4, 5.4.0-1006.6, 5.3.0-1017.19
Ubuntu:18.04:LTSlinux-aws-5.00, 5.0.0-1021.24~18.04.1, 5.0.0-1022.25~18.04.1
Ubuntu:18.04:LTSlinux-oracle-5.05.0.0-1011.16, 5.0.0-1010.15~18.04.1, 5.0.0-1013.18
Ubuntu:18.04:LTSlinux-oem4.15.0-1030.35, 4.15.0-1103.114, 4.15.0-1102.113
Ubuntu:18.04:LTSlinux-gcp-5.35.3.0-1030.32~18.04.1, 5.3.0-1032.34~18.04.1, 5.3.0-1029.31~18.04.1
Ubuntu:18.04:LTSlinux-azure-5.35.3.0-1020.21~18.04.1, 0, 5.3.0-1007.8~18.04.1
Ubuntu:18.04:LTSlinux-aws-5.35.3.0-1035.37, 5.3.0-1034.36, 5.3.0-1033.35
Ubuntu:16.04:LTSlinux-hwe-edge4.13.0-21.24~16.04.1, 4.13.0-25.29~16.04.2, 4.15.0-13.14~16.04.1
Ubuntu:18.04:LTSlinux-hwe5.3.0-67.61, 0, 4.18.0-13.14~18.04.1
Ubuntu:20.04:LTSlinux-riscv5.4.0-37.42, 5.4.0-36.41, 5.4.0-34.38
Ubuntu:18.04:LTSlinux-oracle-5.35.3.0-1013.14~18.04.1, 5.3.0-1014.15~18.04.1, 5.3.0-1016.18~18.04.1
Ubuntu:18.04:LTSlinux-gcp4.15.0-1008.8, 5.0.0-1034.35, 5.0.0-1033.34
Ubuntu:18.04:LTSlinux-gke-4.154.15.0-1055.58, 4.15.0-1044.46, 4.15.0-1042.44
Ubuntu:18.04:LTSlinux-azure-edge5.0.0-1012.12~18.04.2, 4.18.0-1008.8~18.04.1, 0

Timeline

References

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