An issue exists in the Linux kernel up to and including 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer arithmetic operations, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.
Vulnerable Product | Search on Vulmon | Subscribe to Product |
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linux linux kernel |
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fedoraproject fedora 32 |
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fedoraproject fedora 33 |
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fedoraproject fedora 34 |
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debian debian linux 9.0 |