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kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe

🗓️ 30 Jan 2024 13:28:36Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 7 Views

Incorrect pruning in the Berkeley Packet Filter verifier marks unsafe paths as safe, enabling kernel memory reads and writes, privilege escalation, and container escape.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.8aarch64bpftool0:4.18.0-477.43.1.el8_8bpftool-0:4.18.0-477.43.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lebpftool0:4.18.0-477.43.1.el8_8bpftool-0:4.18.0-477.43.1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8s390xbpftool0:4.18.0-477.43.1.el8_8bpftool-0:4.18.0-477.43.1.el8_8.s390x.rpm
Red Hat Enterprise Linux8.8x86_64bpftool0:4.18.0-477.43.1.el8_8bpftool-0:4.18.0-477.43.1.el8_8.x86_64.rpm
Red Hat Enterprise Linux8.8aarch64bpftool-debuginfo0:4.18.0-477.43.1.el8_8bpftool-debuginfo-0:4.18.0-477.43.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lebpftool-debuginfo0:4.18.0-477.43.1.el8_8bpftool-debuginfo-0:4.18.0-477.43.1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8s390xbpftool-debuginfo0:4.18.0-477.43.1.el8_8bpftool-debuginfo-0:4.18.0-477.43.1.el8_8.s390x.rpm
Red Hat Enterprise Linux8.8x86_64bpftool-debuginfo0:4.18.0-477.43.1.el8_8bpftool-debuginfo-0:4.18.0-477.43.1.el8_8.x86_64.rpm
Red Hat Enterprise Linux8.8aarch64kernel0:4.18.0-477.43.1.el8_8kernel-0:4.18.0-477.43.1.el8_8.aarch64.rpm
Red Hat Enterprise Linux8.8ppc64lekernel0:4.18.0-477.43.1.el8_8kernel-0:4.18.0-477.43.1.el8_8.ppc64le.rpm
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29 Jun 2026 21:38Current
6.9Medium risk
Vulners AI Score6.9
CVSS 3.18.8 - 10
EPSS0.03546
SSVC
7