CVE-2025-21950

HIGH EPSS 7.8%
Published Apr 1, 20251y ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
High
Find Similar
Published Apr 1, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥5.12  –  <5.15.179
linuxlinux_kernel*≥5.16  –  <6.1.131
linuxlinux_kernel*≥6.2  –  <6.6.83
linuxlinux_kernel*≥6.7  –  <6.12.19
linuxlinux_kernel*≥6.13  –  <6.13.7
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any
debiandebian_linux11.0any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/524f29d78c9bdeb49f31f5b0376a07d2fc5cf563
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a4c21b878f0e237f45209a324c903ea7fb05247d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d7e5031fe3f161c8eb5e84db1540bc4373ed861b
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
    Third Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/524f29d78c9bdeb49f31f5b0376a07d2fc5cf563
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a4c21b878f0e237f45209a324c903ea7fb05247d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d7e5031fe3f161c8eb5e84db1540bc4373ed861b
    Patch