Is CVE-2026-90829 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-90829 being exploited in the wild.

How severe is CVE-2026-90829?

Medium severity, with a CVSS score of 5.3, published 14 September 2026.

Is there a fix for CVE-2026-90829?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-90829 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-90829?

Check whether you run Gnu Binutils at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-90829: GNU Binutils null pointer dereference in SHT_GROUP handler

CVE-2026-90829 · Severity: medium · CVSS 5.3 · Published 2026-09-14

GNU Binutils is a critical set of tools used by developers and build systems to link and manipulate compiled object files. A null pointer dereference vulnerability in the SHT_GROUP section handler can cause the linker (ld) to crash when processing malformed object files during relocatable linking. While a local attacker or malicious build artifact could trigger this crash, the impact is limited to denial of service (build failure) rather than code execution.

Technologies: Gnu Binutils. Vendors: Gnu.

Quick answers

Is CVE-2026-90829 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-90829 being exploited in the wild.
How severe is CVE-2026-90829?: Medium severity, with a CVSS score of 5.3, published 14 September 2026.
Which products and versions are affected?: Gnu Binutils 2.47.
Is there a fix for CVE-2026-90829?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-90829 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-90829?: Check whether you run Gnu Binutils at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a null pointer dereference in the bfd_elf_set_group_contents() function (bfd/elf.c:3952) triggered during relocatable linking (-r flag). The root cause is incomplete validation of SHT_GROUP section linkage; a malformed or corrupted group section can leave a NULL pointer that is subsequently dereferenced without null checks. The attack vector is local and requires the attacker to supply a specially crafted ELF object file as input to the linker. An exploit proof-of-concept has been made public. The vulnerability affects binutils 2.47 and possibly earlier versions; the GNU project has not yet responded to the bug report or provided a patch.

Affected products

GNU Binutils 2.47

Timeline

2026-07-28: disclosed: Bug report filed
2026-09-14: advisory: CVE-2026-90829 published
2026-07-28: other: PoC publicly available via bugzilla attachment

References

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