CVE-2025-37776
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
CVE-2025-37776 is fixed in 36 products on 1 platform, first by DEBIAN-CVE-2025-37776, released May 1, 2025. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.0
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0036
30th percentile
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb_break_all_levII_oplock() There is a room in smb_break_all_levII_oplock that can cause racy issues when unlocking in the middle of the loop. This patch use read lock to protect whole loop.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| 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 |
| linux · Debian 13.5 (trixie) | 6.12.25-1 | DEBIAN-CVE-2025-37776 | May 1, 2025 |
| linux · Debian 14 | 6.12.25-1 | DEBIAN-CVE-2025-37776 | May 1, 2025 |
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