A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in the g_escape_uri_string() function. If the string to escape contains a very large number of unacceptable characters (which would need escaping), the calculation of the length of the escaped string could overflow, leading to a potential write off the end of the newly allocated string.
Fix
Patch, vendor advisory and mitigation references on NVD 24
- https://access.redhat.com/errata/RHSA-2026:0936 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:0975 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:0991 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1323 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1324 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1326 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1327 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1465 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1608 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1624 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1625 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1626 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1627 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1652 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1736 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2064 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2072 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2485 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2563 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2633 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.7 · redhat, gnomeNVD modified 2026-10-18 20:10
Affected (CPE criteria) 102
cpe:2.3:a:redhat:codeready_linux_builder:9.0:*:*:*:*:*:aarch64:*cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_x86_64:9.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.0:*:*:*:*:*:aarch64:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_x86_64:9.0:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:10.0:*:*:*:*:*:aarch64:*cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:10.0_s390x:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:10.0_ppc64le:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_x86_64:10.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_arm_64:10.0:*:*:*:*:*:aarch64:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:10.0_s390x:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:10.0_ppc64le:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_x86_64:10.0:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:8.0:*:*:*:*:*:aarch64:*cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:8.0_s390x:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:8.0_ppc64le:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_x86_64:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_arm_64:8.0:*:*:*:*:*:aarch64:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0_s390x:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0_ppc64le:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_x86_64:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.2:*:*:*:*:*:aarch64:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.2_s390x:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.2_ppc64le:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_x86_64:9.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.4:*:*:*:*:*:aarch64:*cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.4_s390x:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:9.4_ppc64le:*:*:*:*:*:*:*cpe:2.3:a:redhat:codeready_linux_builder_for_x86_64:9.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.4:*:*:*:*:*:aarch64:*cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.4_s390x:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.4_ppc64le:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_x86_64:9.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_for_x86_64_eus:9.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:9.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian:9.4_ppc64le:*:*:*:*:*:*:*- and 62 more
References 33
- https://access.redhat.com/errata/RHSA-2026:0936 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:0975 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:0991 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1323 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1324 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1326 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1327 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1465 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1608 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1624 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1625 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1626 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1627 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1652 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:1736 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:18344
- https://access.redhat.com/errata/RHSA-2026:18705
- https://access.redhat.com/errata/RHSA-2026:2064 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2072 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2485 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2563 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2633 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2659 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2671 Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:2974
- https://access.redhat.com/errata/RHSA-2026:3415
- https://access.redhat.com/errata/RHSA-2026:4419
- https://access.redhat.com/errata/RHSA-2026:7461
- https://access.redhat.com/security/cve/CVE-2025-13601 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2416741 Issue Tracking, Vendor Advisory
- https://gitlab.gnome.org/GNOME/glib/-/issues/3827 Exploit, Issue Tracking
- https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4914 Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html