CVE-2025-21950
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21950
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21950.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-21950
- Downstream
- Related
- Published
- 2025-04-01T16:15:26Z
- Modified
- 2025-08-09T19:01:27Z
- Summary
- [none]
- Details
-
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 "pmcmdioctl" function, three memory objects allocated by kmalloc are initialized by "hcallgetcpustate", 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.
- References
-
- 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