CVE - CVE-2025-21834

CVE-ID
CVE-2025-21834	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: seccomp: passthrough uretprobe systemcall without filtering When attaching uretprobes to processes running inside docker, the attached process is segfaulted when encountering the retprobe. The reason is that now that uretprobe is a system call the default seccomp filters in docker block it as they only allow a specific set of known syscalls. This is true for other userspace applications which use seccomp to control their syscall surface. Since uretprobe is a "kernel implementation detail" system call which is not used by userspace application code directly, it is impractical and there's very little point in forcing all userspace applications to explicitly allow it in order to avoid crashing tracked processes. Pass this systemcall through seccomp without depending on configuration. Note: uretprobe is currently only x86_64 and isn't expected to ever be supported in i386. [kees: minimized changes for easier backporting, tweaked commit log]
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/5a262628f4cf2437d863fe41f9d427177b87664c URL:https://git.kernel.org/stable/c/5a262628f4cf2437d863fe41f9d427177b87664c MISC:https://git.kernel.org/stable/c/cf6cb56ef24410fb5308f9655087f1eddf4452e6 URL:https://git.kernel.org/stable/c/cf6cb56ef24410fb5308f9655087f1eddf4452e6 MISC:https://git.kernel.org/stable/c/fa80018aa5be10c35e9fa896b7b4061a8dce3eed URL:https://git.kernel.org/stable/c/fa80018aa5be10c35e9fa896b7b4061a8dce3eed
Assigning CNA
kernel.org
Date Record Created
20241229	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241229)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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