PatchSiren cyber security CVE debrief
CVE-2026-15003 Red Hat CVE debrief
A flaw was found in the GNU Binutils linker. This vulnerability, a heap-buffer-overflow read (CWE-125), occurs when the linker processes a specially crafted 32-bit XCOFF object file. An attacker could exploit this by providing a malicious file, leading to an out-of-bounds read of memory. This can result in information disclosure, potentially revealing sensitive heap data, and a Denial of Service (DoS) due to the linker crashing.
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 10
- CVSS
- MEDIUM 5.6
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-07-27
- Original CVE updated
- 2026-07-27
- Advisory published
- 2026-07-27
- Advisory updated
- 2026-07-27
Who should care
Users of GNU Binutils, especially those processing object files from untrusted sources, should be aware of this vulnerability. This includes developers, system administrators, and users of software that relies on GNU Binutils for linking.
Technical summary
The vulnerability is a heap-buffer-overflow read (CWE-125) in the GNU Binutils linker. It occurs when the linker processes a specially crafted 32-bit XCOFF object file, leading to an out-of-bounds read of memory. This can result in information disclosure and a Denial of Service (DoS). Affected systems include those using GNU Binutils for linking, particularly in environments processing object files from untrusted sources. The impact includes potential exposure of sensitive heap data and system crashes. Defensive measures should focus on validating input object files and applying memory protection mechanisms.
Defensive priority
Medium priority due to the potential for information disclosure and DoS.
Recommended defensive actions
- Inventory and assess GNU Binutils usage, especially in environments processing object files from untrusted sources.
- Apply patches or updates provided by the vendor as soon as available.
- Implement compensating controls such as memory protection mechanisms.
- Monitor for suspicious activity related to GNU Binutils.
- Consider using alternative tools or sandboxed environments for processing untrusted object files.
Evidence notes
The CVE record was published on 2026-07-27T14:16:51.473Z and was last modified on 2026-07-27T20:37:16.927Z. The NVD entry is currently Awaiting Analysis. References include Red Hat security advisories and sourceware bug reports.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-27T14:16:51.473Z and has not been modified since then. The NVD entry is currently Awaiting Analysis.