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In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when a SOAP server has a typemap configured, the decoding process contains a mistake which checks the wrong variable in case of missing value element. This leads to dereferences a NULL pointer, causing a segmentation fault. This allows a remote unauthenticated attacker to crash the PHP SOAP server process, resulting in denial of service.
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:22143 https://access.redhat.com/errata/RHSA-2026:22143
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:22142 https://access.redhat.com/errata/RHSA-2026:22142
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:22305 https://access.redhat.com/errata/RHSA-2026:22305
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:22649 https://access.redhat.com/errata/RHSA-2026:22649
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:23388 https://access.redhat.com/errata/RHSA-2026:23388
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:33449 https://access.redhat.com/errata/RHSA-2026:33449
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:34354 https://access.redhat.com/errata/RHSA-2026:34354