Off-by-one Error
CVE-2020-27171
Summary
An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-10d2bb2e6b1d.
- LOW
- LOCAL
- NONE
- NONE
- PARTIAL
- PARTIAL
CWE-193 - Off-by-one Error
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
References
Advisory Timeline
- Published