CVE-2025-21673
smb: client: fix double free of TCP_Server_Info::hostname
CVE-2025-21673 is fixed in 61 products on 1 platform, first by DEBIAN-CVE-2025-21673, released January 31, 2025. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.5
IMPORTANT
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0042
36th percentile
smb: client: fix double free of TCP_Server_Info::hostname (bsc#1236689).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| dtb-aarch64 · opensuse-leap 15.6 | 6.4.0-150600.23.42.1 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-64kb · opensuse-leap 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-64kb · sles 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-azure · opensuse-leap 15.6 | 6.4.0-150600.8.31.1 | SUSE-SU-2025:0847-1 | Mar 12, 2025 |
| kernel-azure · sles 15.6 | 6.4.0-150600.8.31.1 | SUSE-SU-2025:0847-1 | Mar 12, 2025 |
| kernel-coco · sles 15.6 | 6.4.0-15061.15.coco15sp6.1 | SUSE-SU-2025:0564-1 | Feb 17, 2025 |
| kernel-coco_debug · sles 15.6 | 6.4.0-15061.15.coco15sp6.1 | SUSE-SU-2025:0564-1 | Feb 17, 2025 |
| kernel-debug · opensuse-leap 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-default · opensuse-leap 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-default · sles 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-default-base · opensuse-leap 15.6 | 6.4.0-150600.23.42.2.150600.12.18.4 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-default-base · sles 15.6 | 6.4.0-150600.23.42.2.150600.12.18.4 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-docs · opensuse-leap 15.6 | 6.4.0-150600.23.42.1 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-docs · sles 15.6 | 6.4.0-150600.23.42.1 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-kvmsmall · opensuse-leap 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-livepatch-SLE15-SP6-RT_Update_9 · sles 15.6 | 1-150600.1.3.2 | SUSE-SU-2025:0955-1 | Mar 19, 2025 |
| kernel-livepatch-SLE15-SP6_Update_9 · sles 15.6 | 1-150600.13.3.4 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-obs-build · opensuse-leap 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-obs-build · sles 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-obs-qa · opensuse-leap 15.6 | 6.4.0-150600.23.42.1 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-rt · opensuse-leap 15.6 | 6.4.0-150600.10.29.1 | SUSE-SU-2025:0955-1 | Mar 19, 2025 |
| kernel-rt_debug · opensuse-leap 15.6 | 6.4.0-150600.10.29.1 | SUSE-SU-2025:0955-1 | Mar 19, 2025 |
| kernel-source · opensuse-leap 15.6 | 6.4.0-150600.23.42.1 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-source · sles 15.6 | 6.4.0-150600.23.42.1 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-source-azure · opensuse-leap 15.6 | 6.4.0-150600.8.31.1 | SUSE-SU-2025:0847-1 | Mar 12, 2025 |
| kernel-source-azure · sles 15.6 | 6.4.0-150600.8.31.1 | SUSE-SU-2025:0847-1 | Mar 12, 2025 |
| kernel-source-coco · sles 15.6 | 6.4.0-15061.15.coco15sp6.1 | SUSE-SU-2025:0564-1 | Feb 17, 2025 |
| kernel-source-rt · opensuse-leap 15.6 | 6.4.0-150600.10.29.1 | SUSE-SU-2025:0955-1 | Mar 19, 2025 |
| kernel-syms · opensuse-leap 15.6 | 6.4.0-150600.23.42.1 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-syms · sles 15.6 | 6.4.0-150600.23.42.1 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-syms-azure · opensuse-leap 15.6 | 6.4.0-150600.8.31.1 | SUSE-SU-2025:0847-1 | Mar 12, 2025 |
| kernel-syms-azure · sles 15.6 | 6.4.0-150600.8.31.1 | SUSE-SU-2025:0847-1 | Mar 12, 2025 |
| kernel-syms-coco · sles 15.6 | 6.4.0-15061.15.coco15sp6.1 | SUSE-SU-2025:0564-1 | Feb 17, 2025 |
| kernel-syms-rt · opensuse-leap 15.6 | 6.4.0-150600.10.29.1 | SUSE-SU-2025:0955-1 | Mar 19, 2025 |
| kernel-uek · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-doc · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-doc · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-tools · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-tools · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-zfcpdump · opensuse-leap 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| kernel-zfcpdump · sles 15.6 | 6.4.0-150600.23.42.2 | SUSE-SU-2025:0856-1 | Mar 13, 2025 |
| linux · Debian 13.5 (trixie) | 6.12.11-1 | DEBIAN-CVE-2025-21673 | Jan 31, 2025 |
| linux · Debian 14 | 6.12.11-1 | DEBIAN-CVE-2025-21673 | Jan 31, 2025 |
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