An issue was discovered in the function mark_beginning_as_normal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the mark_beginning_as_normal function making recursive calls to itself in certain scenarios involving lots of '*' characters. Remote attackers co...
Product
debian/flex vulnerabilities
7 published CVES affecting debian/flex, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 7
- Critical
- 1
- High
- 2
- Medium
- 1
- Low
- 0
- Unscored
- 3
- CISA KEV
- 0
Latest debian/flex CVEs
Newest publication first
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MediumCVSS 5.5
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CriticalCVSS 9.8
Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.
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DSA-3653-2 flex - security update
PublishedUnknown -
DSA-3653-1 flex - security update
PublishedUnknown -
HighCVSS 7.5
Unspecified vulnerability in Fast Lexical Analyzer Generator (flex) before 2.5.35 has unknown impact and attack vectors.
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HighCVSS 7.5
flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) before 2.5.33 does not allocate enough memory for grammars containing (1) REJECT statements or (2) trailing context rules, which causes flex to generate code that contains a buffer overflow that might...
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DSA-1020-1 flex - buffer overflow
PublishedUnknown
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.