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.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 5.12 | 5.15.179 |
| linux / linux_kernel | 5.16 | 6.1.131 |
| linux / linux_kernel | 6.2 | 6.6.83 |
| linux / linux_kernel | 6.7 | 6.12.19 |
| linux / linux_kernel | 6.13 | 6.13.7 |
| linux / linux_kernel | 6.14-rc1 | 6.14-rc1.x |
| linux / linux_kernel | 6.14-rc2 | 6.14-rc2.x |
| linux / linux_kernel | 6.14-rc3 | 6.14-rc3.x |
| linux / linux_kernel | 6.14-rc4 | 6.14-rc4.x |
| linux / linux_kernel | 6.14-rc5 | 6.14-rc5.x |
| debian / debian_linux | 11.0 | 11.0.x |
- 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
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