CVE-2025-21950

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3d679d5aec648f50e645702929890b9611998a0b < 4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120affected
LinuxLinux3d679d5aec648f50e645702929890b9611998a0b < 524f29d78c9bdeb49f31f5b0376a07d2fc5cf563affected
LinuxLinux3d679d5aec648f50e645702929890b9611998a0b < d7e5031fe3f161c8eb5e84db1540bc4373ed861baffected
LinuxLinux3d679d5aec648f50e645702929890b9611998a0b < 1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083affected
LinuxLinux3d679d5aec648f50e645702929890b9611998a0b < a4c21b878f0e237f45209a324c903ea7fb05247daffected
LinuxLinux3d679d5aec648f50e645702929890b9611998a0b < 819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bbaffected
LinuxLinux5.12affected
LinuxLinux0 < 5.12unaffected
LinuxLinux5.15.179 <= 5.15.*unaffected
LinuxLinux6.1.131 <= 6.1.*unaffected
LinuxLinux6.6.83 <= 6.6.*unaffected
LinuxLinux6.12.19 <= 6.12.*unaffected
LinuxLinux6.13.7 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References