7.1

CVE-2025-21950: debian debian_linux

CVSS: 7.1v3.1HighAnalyzed
AliasesUBUNTU-CVE-2025-21950DEBIAN-CVE-2025-21950
Published 01-04-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-21950 is a high (CVSS 7.1) vulnerability in debian debian_linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (NVD)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 44 · Related 42
DLA-4193-1DSA-5900-1SUSE-SU-2025:01614-1SUSE-SU-2025:01707-1SUSE-SU-2025:01919-1SUSE-SU-2025:01951-1

Timeline

  1. 01-04-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu125 products
  • linux< 5.15.0-140.150 | < 6.8.0-84.84
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1084.91 | < 6.8.0-1039.41
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
Linux2 products
  • linux≥ 3d679d5aec648f50e645702929890b9611998a0b, < 4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120 | ≥ 3d679d5aec648f50e645702929890b9611998a0b, < 524f29d78c9bdeb49f31f5b0376a07d2fc5cf563 | ≥ 3d679d5aec648f50e645702929890b9611998a0b, < d7e5031fe3f161c8eb5e84db1540bc4373ed861b | ≥ 3d679d5aec648f50e645702929890b9611998a0b, < 1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083 | ≥ 3d679d5aec648f50e645702929890b9611998a0b, < a4c21b878f0e237f45209a324c903ea7fb05247d | ≥ 3d679d5aec648f50e645702929890b9611998a0b, < 819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb | 5.12
  • linux_kernel≥ 5.12, < 5.15.179 | ≥ 5.16, < 6.1.131 | ≥ 6.2, < 6.6.83 | ≥ 6.7, < 6.12.19 | ≥ 6.13, < 6.13.7 | 6.14:rc1 | 6.14:rc2 | 6.14:rc3 | 6.14:rc4 | 6.14:rc5

3 vendors · 129 products

References

43 links
Show all 43 references