CVE-2025-21950

In the Linux kernel, the following vulnerability has been resolved: drivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl In the "pmcmd_ioctl" function, three memory objects allocated by kmalloc are initialized by "hcall_get_cpu_state", which are then copied to user space. The initializer is indeed implemented in "acrn_hypercall2" (arch/x86/include/asm/acrn.h). There is a risk of information leakage due to uninitialized bytes.

The following products are affected by CVE-2025-21950 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-21950.

URL	Resource
https://git.kernel.org/stable/c/1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083
https://git.kernel.org/stable/c/4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120
https://git.kernel.org/stable/c/524f29d78c9bdeb49f31f5b0376a07d2fc5cf563
https://git.kernel.org/stable/c/819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb
https://git.kernel.org/stable/c/a4c21b878f0e237f45209a324c903ea7fb05247d
https://git.kernel.org/stable/c/d7e5031fe3f161c8eb5e84db1540bc4373ed861b
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
https://lore.kernel.org/linux-cve-announce/2025040136-CVE-2025-21950-11d2@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-21950
https://www.cve.org/CVERecord?id=CVE-2025-21950