An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. This occurs because tccasm.c mishandles section switches.
Product
debian/tcc vulnerabilities
6 published CVES affecting debian/tcc, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 6
- Critical
- 0
- High
- 0
- Medium
- 6
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Latest debian/tcc CVEs
Newest publication first
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MediumCVSS 5.5 EPSS 1.2%
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MediumCVSS 5.5 EPSS 0.88%
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 1 byte out of bounds write in the end_macro function in tccpp.c.
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MediumCVSS 5.5 EPSS 0.75%
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the asm_parse_directive function in tccasm.c.
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MediumCVSS 5.5 EPSS 0.75%
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.
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MediumCVSS 5.5 EPSS 0.75%
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the use_section1 function in tccasm.c.
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MediumCVSS 4.6 EPSS 0.35%
Tiny C Compiler (TCC) 0.9.23 (aka TinyCC) evaluates the "i>sizeof(int)" expression to false when i equals -1, which might introduce integer overflow vulnerabilities into applications that could be exploited by context-dependent attackers.
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.