Disclosure summary
GNU Binutils thru 2.46 readelf contains a vulnerability that leads to an abort (SIGABRT) when processing a crafted ELF binary with malformed DWARF abbrev or debug information. Due to incomplete state cleanup in process_debug_info(), an invalid debug_info_p state may propagate into DWARF attribute parsing routines. When certain malformed attributes result in an unexpected data length of zero, byte_get_little_endian() triggers a fatal abort. No evidence of memory corruption or code execution was observed; the impact is limited to denial of service.
Source-reported weakness categories
CWE-460
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Mar
Open original source · Updated Oct 03, 2026
GNU Binutils thru 2.46 readelf contains a vulnerability that leads to an abort (SIGABRT) when processing a crafted ELF binary with malformed DWARF abbrev or debug information. Due to incomplete state cleanup in process_debug_info(), an invalid debug_info_p state may propagate into DWARF attribute parsing routines. When certain malformed attributes result in an unexpected data length of zero, byte_get_little_endian() triggers a fatal abort. No evidence of memory corruption or code execution was observed; the impact is limited to denial of service.
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 6.2
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | cbl2 binutils 2.37-20 on CBL-Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 binutils 2.41-10 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 binutils 2.37-20 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 binutils 2.41-11 on Azure Linux 3.0 | (MSRC status code 3) |
Vendor remediation references
- Release Notes · product IDs 20936-21692
- Vendor guidance · product IDs 20936-21692
- CBL-Mariner Releases · build 2.41-11 · product IDs 20618-17084, 21200-17084
- Vendor guidance · product IDs 20618-17084, 21200-17084
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-03-10T21:02:25-04:00
MODIFIED 2026-10-03T21:43:14-04:00
INGESTED 2026-10-08T12:45:08-04:00