vulnerability
Ubuntu: (CVE-2023-32246): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Aug 18, 2025 | Aug 19, 2025 | Nov 20, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Aug 18, 2025
Added
Aug 19, 2025
Modified
Nov 20, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: call rcu_barrier() in ksmbd_server_exit()
racy issue is triggered the bug by racing between closing a connection
and rmmod. In ksmbd, rcu_barrier() is not called at module unload time,
so nothing prevents ksmbd from getting unloaded while it still has RCU
callbacks pending. It leads to trigger unintended execution of kernel
code locally and use to defeat protections such as Kernel Lockdown
Solutions
ubuntu-upgrade-linuxubuntu-upgrade-linux-awsubuntu-upgrade-linux-aws-5-15ubuntu-upgrade-linux-azureubuntu-upgrade-linux-azure-5-15ubuntu-upgrade-linux-bluefieldubuntu-upgrade-linux-gcpubuntu-upgrade-linux-gcp-5-15ubuntu-upgrade-linux-gkeubuntu-upgrade-linux-gkeopubuntu-upgrade-linux-hwe-5-15ubuntu-upgrade-linux-ibmubuntu-upgrade-linux-ibm-5-15ubuntu-upgrade-linux-intel-iot-realtimeubuntu-upgrade-linux-intel-iotgubuntu-upgrade-linux-intel-iotg-5-15ubuntu-upgrade-linux-kvmubuntu-upgrade-linux-lowlatencyubuntu-upgrade-linux-lowlatency-hwe-5-15ubuntu-upgrade-linux-nvidiaubuntu-upgrade-linux-nvidia-tegraubuntu-upgrade-linux-nvidia-tegra-5-15ubuntu-upgrade-linux-nvidia-tegra-igxubuntu-upgrade-linux-oracleubuntu-upgrade-linux-oracle-5-15ubuntu-upgrade-linux-raspiubuntu-upgrade-linux-realtimeubuntu-upgrade-linux-riscv-5-15ubuntu-upgrade-linux-xilinx-zynqmp
References
- CVE-2023-32246
- https://attackerkb.com/topics/CVE-2023-32246
- URL-https://git.kernel.org/linus/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5
- URL-https://git.kernel.org/stable/c/5a7090ccc242ab009ee7769e9d7fad6644dbe9bd
- URL-https://git.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2
- URL-https://git.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795
- URL-https://git.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6
- URL-https://git.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5
- URL-https://www.cve.org/CVERecord?id=CVE-2023-32246
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