Description
A flaw was found in GDB's STABS debug format parser. The
read_member_functions() function in gdb/stabsread.c contains a linked
list removal bug in the code that separates destructor and non-destructor
member functions of C++ classes. The bug causes the destructor entries to
remain in the main function list while the list length counter is
decremented, resulting in an out-of-bounds write when the function list
is copied to its final allocated array. An attacker can craft an ELF
binary with malicious .stab and .stabstr sections that triggers this
out-of-bounds write when a user opens the file in GDB and performs any
symbol-inspection operation such as setting a breakpoint. The inferior
process does not need to be executed. Under controlled conditions, this
was demonstrated to achieve execution of arbitrary commands within the
GDB process.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat Cost Management On-Premise 1 | — | — |
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat OpenShift AI 3.0 | — | — |
| Red Hat | Red Hat OpenShift AI 3.4 | — | — |
| Red Hat | Red Hat OpenShift AI 3.5 | — | — |
| Red Hat | Red Hat Update Infrastructure 5 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gdb | No fix yet | — |
| Debian 13 | gdb | No fix yet | — |
| Debian 12 | gdb | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | gdb | No fix yet | — |
| Ubuntu 26.04 LTS | gdb | No fix yet | — |
| Ubuntu 24.04 LTS | gdb | No fix yet | — |
| Ubuntu 22.04 LTS | gdb | No fix yet | — |
| Ubuntu 20.04 LTS | gdb | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | gdb | No fix yet | — |
| Ubuntu Pro 16.04 LTS | gdb | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | gdb +4 | 16.3-3.1.el10_2 | RHSA-2026:73427 |
| RHEL 9 | gdb +4 | 16.3-3.1.el9_8 | RHSA-2026:73426 |
| RHEL 8 | gdb +3 | 8.2-20.1.el8_10 | RHSA-2026:73425 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | gdb +4 | 17.2-6.2.hum1 | RHSA-2026:82447 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | gdb +4 | 16.3-3.1.el10_2 | ALSA-2026:73427 |
| AlmaLinux 9 | gdb +4 | 16.3-3.1.el9_8 | ALSA-2026:73426 |
| AlmaLinux 8 | gdb +3 | 8.2-20.1.el8_10 | ALSA-2026:73425 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | gdb | 16.3-3.1.el10_2 | RLSA-2026:73427 |
| Rocky Linux 9 | gdb | 16.3-3.1.el9_8 | RLSA-2026:73426 |
| Rocky Linux 8 | gdb | 8.2-20.1.el8_10 | RLSA-2026:73425 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
| SLES 15 SP6 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
| SLES 15 SP5 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
| SLES 15 SP4 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
| SLES 12 SP5 | gdb | 13.2-2.29.1 | SUSE-SU-2026:4294-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
| SLES for SAP 15 SP5 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
| SLES for SAP 15 SP4 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
| SLE Micro 6.2 | gdb | 16.3-160000.6.1 | SUSE-SU-2026:23849-1 |
| SLE HPC 15 SP5 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
| SLE HPC 15 SP4 | gdb | 16.3-150400.15.32.1 | SUSE-SU-2026:4400-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gdb | 17.2-1.1 | openSUSE-SU-2026:12483-1 |
| openSUSE Leap 16.0 | gdb +1 | 16.3-160000.6.1 | openSUSE-SU-2026:21890-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | crash +1 | 8.0.5-5.amzn2023.0.2 | ALAS2023-2026-3118 |
| Amazon Linux 2023 | gdb +4 | 16.3-1.amzn2023.0.2 | ALAS2023-2026-3142 |
| Amazon Linux 2 | crash +1 | 8.0.4-4.amzn2.0.2 | ALAS2-2026-3937 |
| Amazon Linux 2 | gdb +2 | 8.0.1-36.amzn2.0.3 | ALAS2-2026-3958 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | gdb +1 | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | gdb +4 | 16.3-3.1.0.1.el10_2 | ELSA-2026-73427 |
| Oracle Linux 9 | gdb +4 | 16.3-3.1.0.1.el9_8 | ELSA-2026-73426 |
| Oracle Linux 8 | gdb +3 | 8.2-20.1.0.1.el8_10 | ELSA-2026-73425 |
Advisories 23
- WID-SEC-2026-3650 Red Hat Enterprise Linux (gdb): Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Nov 12, 2026
- openSUSE-SU-2026:12483-1 gdb-17.2-1.1 on GA media SUSE / openSUSE Security Updates · Nov 9, 2026
- ELSA-2026-73425 Important: gdb security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 6, 2026
- ALSA-2026:73426 Important: gdb security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:73427 Important: gdb security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:73425 Important: gdb security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:82447 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:73426 Red Hat Security Advisory: gdb security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:73427 Red Hat Security Advisory: gdb security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2026:73425 Red Hat Security Advisory: gdb security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SUSE-SU-2026:4400-1 Security update for gdb SUSE / openSUSE Security Updates · Oct 1, 2026
- ELSA-2026-73427 Important: gdb security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 1, 2026
- ELSA-2026-73426 Important: gdb security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 1, 2026
- RLSA-2026:73426 Important: gdb security update Rocky Linux Security Advisories · Sep 30, 2026
- RLSA-2026:73427 Important: gdb security update Rocky Linux Security Advisories · Sep 30, 2026
- RLSA-2026:73425 Important: gdb security update Rocky Linux Security Advisories · Sep 30, 2026
- ALAS2023-2026-3118 Important: crash security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- ALAS2023-2026-3142 Important: gdb security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- ALAS2-2026-3937 Important: crash security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- ALAS2-2026-3958 Important: gdb security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- openSUSE-SU-2026:21890-1 Security update for gdb SUSE / openSUSE Security Updates · Sep 25, 2026
- SUSE-SU-2026:23849-1 Security update for gdb SUSE / openSUSE Security Updates · Sep 23, 2026
- SUSE-SU-2026:4294-1 Security update for gdb SUSE / openSUSE Security Updates · Sep 23, 2026
References
- RHSA-2026:73425 vendor-advisory
- RHSA-2026:73426 vendor-advisory
- RHSA-2026:73427 vendor-advisory
- RHSA-2026:79357 vendor-advisory
- RHSA-2026:82447 vendor-advisory
- RHSA-2026:82939 vendor-advisory
- RHSA-2026:96095 vendor-advisory
- RHSA-2026:96096 vendor-advisory
- RHSA-2026:96097 vendor-advisory
- RHSA-2026:96098 vendor-advisory
- RHSA-2026:98414 vendor-advisory
- RHSA-2026:98415 vendor-advisory
- RHSA-2026:98416 vendor-advisory
- RHSA-2026:98417 vendor-advisory
- RHSA-2026:98419 vendor-advisory
- RHSA-2026:98420 vendor-advisory
- RHSA-2026:98421 vendor-advisory
- RHSA-2026:98423 vendor-advisory
- RHSA-2026:98427 vendor-advisory
- RHSA-2026:98428 vendor-advisory
- RHSA-2026:98429 vendor-advisory
- RHSA-2026:98430 vendor-advisory
- RHSA-2026:98431 vendor-advisory
- RHSA-2026:98432 vendor-advisory
- RHSA-2026:98434 vendor-advisory
- RHSA-2026:98435 vendor-advisory
- RHSA-2026:98436 vendor-advisory
- RHSA-2026:98437 vendor-advisory
- RHSA-2026:98438 vendor-advisory
- RHSA-2026:98439 vendor-advisory
- RHSA-2026:98440 vendor-advisory
- RHSA-2026:98441 vendor-advisory
- RHSA-2026:98443 vendor-advisory
- RHSA-2026:99594 vendor-advisory
- RHSA-2026:99596 vendor-advisory
- RHSA-2026:99597 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-13732 vdb-entry
- RHBZ#2494416 issue-tracking