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Graph/f25748ef-5ed4-4219-bb0b-83692f8d5ec9

RootCauseunvalidated

grub_script_lexer_record (grub-core/script/lexer.c lines 96-126).

f25748ef-5ed4-4219-bb0b-83692f8d5ec9

grub_script_lexer_record (grub-core/script/lexer.c lines 96-126).

Node Details

Public graph metadata

Updated5/2/2026

PageRank0.0000

Effectiveness0.000

Connections

3 linked nodes

AFFECTSComponent

CAUSED_BYProblem

When a GRUB script token exceeds YYLMAX size — in GRUB2 2.04 (and earlier). Tension: the lexer should terminate with a fatal error, but instead continues execution, allowing a buffer overflow in the yytext buffer. Outcome: This can lead to code execution and Secure Boot bypass.

IDENTIFIESReport

CVE-2020-10713 BootHole: heap overflow in grub_script_lexer_record

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