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CVE-2025-21950 (GCVE-0-2025-21950)

Vulnerability from cvelistv5 – Published: 2025-04-01 15:41 – Updated: 2026-05-11 21:09
VLAI
Title
drivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl
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.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3d679d5aec648f50e645702929890b9611998a0b , < 4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120 (git)
Affected: 3d679d5aec648f50e645702929890b9611998a0b , < 524f29d78c9bdeb49f31f5b0376a07d2fc5cf563 (git)
Affected: 3d679d5aec648f50e645702929890b9611998a0b , < d7e5031fe3f161c8eb5e84db1540bc4373ed861b (git)
Affected: 3d679d5aec648f50e645702929890b9611998a0b , < 1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083 (git)
Affected: 3d679d5aec648f50e645702929890b9611998a0b , < a4c21b878f0e237f45209a324c903ea7fb05247d (git)
Affected: 3d679d5aec648f50e645702929890b9611998a0b , < 819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.179 , ≤ 5.15.* (semver)
Unaffected: 6.1.131 , ≤ 6.1.* (semver)
Unaffected: 6.6.83 , ≤ 6.6.* (semver)
Unaffected: 6.12.19 , ≤ 6.12.* (semver)
Unaffected: 6.13.7 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "initial_release_date": "2025-04-04T02:58:46Z",
      "product_status:known_affected": "522",
      "product_status:known_not_affected": "272",
      "product_status:recommended": "384",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-21950",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-21950.json",
      "version": "42"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.