CVE-2026-116732
libdwarf through 2.3.3 Heap Out-of-Bounds Read via dwarf_debug_addr_table
- State
- Published
- Severity
- 4.8 Medium
- Published
- Oct 26, 2026
- Updated
- Oct 26, 2026
- Reserved
- Oct 26, 2026
Description
libdwarf through 2.3.3 contains a heap out-of-bounds read vulnerability in dwarf_debug_addr_table() that omits the table starting offset when validating .debug_addr unit length. Attackers can supply a crafted object file with a non-zero offset table, causing dwarf_debug_addr_by_index() to read past the heap buffer, disclosing adjacent heap bytes or crashing consumers.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 4.4 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
libdwarfdavea42 |
|
References
- GitHub Issue #336issue-tracking
- https://github.com/davea42/libdwarf-codeproduct
- https://github.com/davea42/libdwarf-code/commit/71f04013ddc2a3c88b9e25a4162ee2824741b593patch
- https://github.com/davea42/libdwarf-code/blob/v2.3.3/src/lib/libdwarf/dwarf_debugaddr.c#L175-L216technical-description
- https://hackmd.io/@haindpwn/libdwarf-debug-addr-table-section-offset-oob-readthird-party-advisory
- VulnCheck Advisory: libdwarf through 2.3.3 Heap Out-of-Bounds Read via dwarf_debug_addr_tablethird-party-advisory
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