CVE-2026-91781: medium-severity vulnerability in GNU Binutils
GNU Binutils ELF Section elf64-x86-64.c elf_x86_64_common_section_index null pointer dereference
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.8epss 0.2%
A security vulnerability has been detected in GNU Binutils 2.47. Affected is the function elf_x86_64_common_section_index of the file bfd/elf64-x86-64.c of the component ELF Section Handler. The manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. Upgrading to version 2.48 is able to address this issue. The identifier of the patch is 7322e9bc30cb282575a701c307851fd3d66fee68. It is suggested to upgrade the affected component.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
GNU · Binutilspublic PoCs found — 1
cve_referencegithub.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34449unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — GNU Binutils
In the same product, most dangerous first.
CVE-2025-1153LOWGNU Binutils format.c bfd_set_format memory corruptionEPSS 1.4%CVE-2025-1178MEDIUMGNU Binutils ld libbfd.c bfd_putl64 memory corruptionEPSS 0.8%CVE-2025-0840MEDIUMGNU Binutils objdump.c disassemble_bytes stack-based overflowEPSS 0.7%CVE-2025-1181LOWGNU Binutils ld elflink.c _bfd_elf_gc_mark_rsec memory corruptionEPSS 0.7%CVE-2025-1180LOWGNU Binutils ld elf-eh-frame.c _bfd_elf_write_section_eh_frame memory corruptionEPSS 0.7%CVE-2025-1176LOWGNU Binutils ld elflink.c _bfd_elf_gc_mark_rsec heap-based overflowEPSS 0.7%
References
https://github.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34449https://sourceware.org/bugzilla/show_bug.cgi?id=34449https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7322e9bc30cb282575a701c307851fd3d66fee68https://vuldb.com/cve/CVE-2026-91781https://vuldb.com/submit/933336https://vuldb.com/vuln/404052https://vuldb.com/vuln/404052/ctihttps://www.gnu.org/