openSUSE Leap 15.3 Kernel Important Security Update 2026-0928

## The SUSE Linux Enterprise 15 SP3 kernel was updated to fix various security issues The following security issues were fixed: * CVE-2023-53794: cifs: fix session state check in reconnect to avoid use- after-free issue (bsc#1255163). * CVE-2023-53827: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} (bsc#1255049). * CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917). * CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size (bsc#1247177). * CVE-2025-68285: libceph: fix potential use-after-free in have_mon_and_osd_map() (bsc#1255401). * CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (bsc#1256645). Read the Full Advisory

## The SUSE Linux Enterprise 15 SP3 kernel was updated to fix various security issues The following security issues were fixed: * CVE-2023-53794: cifs: fix session state check in reconnect to avoid use- after-free issue (bsc#1255163). * CVE-2023-53827: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} (bsc#1255049). * CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917). * CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size (bsc#1247177). * CVE-2025-68285: libceph: fix potential use-after-free in have_mon_and_osd_map() (bsc#1255401). * CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (bsc#1256645). Read the Full Advisory

* bsc#1238917 * bsc#1246166 * bsc#1247177 * bsc#1255049 * bsc#1255163 * bsc#1255401 * bsc#1256645 * bsc#1257231 * bsc#1257735 * bsc#1257749 * bsc#1257790 * bsc#1258340 * bsc#1258395 * bsc#1258849 * jsc#PED-12836 Cross- * CVE-2023-53794 * CVE-2023-53827 * CVE-2025-21738 * CVE-2025-38224 * CVE-2025-38375 * CVE-2025-68285 * CVE-2025-71066 * CVE-2026-23004 * CVE-2026-23060 * CVE-2026-23074 * CVE-2026-23089 * CVE-2026-23191 * CVE-2026-23204 CVSS scores: * CVE-2023-53794 ( SUSE ): 7.7 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N * CVE-2023-53794 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H * CVE-2023-53827 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Read the Full Advisory

* CVE-2023-53794 ( SUSE ): 7.7

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2023-53794 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-53827 ( SUSE ): 7.3

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Read the Full Advisory