CVE-2025-21950

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There is a risk of\ninformation leakage due to uninitialized bytes."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/virt/acrn/hsm.c"], "versions": [{"version": "3d679d5aec648f50e645702929890b9611998a0b", "lessThan": "4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120", "status": "affected", "versionType": "git"}, {"version": "3d679d5aec648f50e645702929890b9611998a0b", "lessThan": "524f29d78c9bdeb49f31f5b0376a07d2fc5cf563", "status": "affected", "versionType": "git"}, {"version": "3d679d5aec648f50e645702929890b9611998a0b", "lessThan": "d7e5031fe3f161c8eb5e84db1540bc4373ed861b", "status": "affected", "versionType": "git"}, {"version": "3d679d5aec648f50e645702929890b9611998a0b", "lessThan": "1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083", "status": "affected", "versionType": "git"}, {"version": "3d679d5aec648f50e645702929890b9611998a0b", "lessThan": "a4c21b878f0e237f45209a324c903ea7fb05247d", "status": "affected", "versionType": "git"}, {"version": "3d679d5aec648f50e645702929890b9611998a0b", "lessThan": "819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/virt/acrn/hsm.c"], "versions": [{"version": "5.12", "status": "affected"}, {"version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.179", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.131", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.83", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.19", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13.7", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "5.15.179"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.1.131"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.6.83"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.12.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.13.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.14"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120"}, {"url": "https://git.kernel.org/stable/c/524f29d78c9bdeb49f31f5b0376a07d2fc5cf563"}, {"url": "https://git.kernel.org/stable/c/d7e5031fe3f161c8eb5e84db1540bc4373ed861b"}, {"url": "https://git.kernel.org/stable/c/1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083"}, {"url": "https://git.kernel.org/stable/c/a4c21b878f0e237f45209a324c903ea7fb05247d"}, {"url": "https://git.kernel.org/stable/c/819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb"}], "title": "drivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:39:51.532Z"}}]}}

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The initializer is indeed implemented in\n\"acrn_hypercall2\" (arch/x86/include/asm/acrn.h). There is a risk of\ninformation leakage due to uninitialized bytes."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drivers: virt: acrn: hsm: Usar kzalloc para evitar fugas de informaci\u00f3n en pmcmd_ioctl. En la funci\u00f3n \"pmcmd_ioctl\", tres objetos de memoria asignados por kmalloc se inicializan mediante \"hcall_get_cpu_state\", que posteriormente se copian al espacio de usuario. El inicializador est\u00e1 implementado en \"acrn_hypercall2\" (arch/x86/include/asm/acrn.h). Existe riesgo de fuga de informaci\u00f3n debido a bytes no inicializados."}], "id": "CVE-2025-21950", "lastModified": "2026-06-17T08:44:41.453", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-04-01T16:15:26.180", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/524f29d78c9bdeb49f31f5b0376a07d2fc5cf563"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a4c21b878f0e237f45209a324c903ea7fb05247d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d7e5031fe3f161c8eb5e84db1540bc4373ed861b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl", "id": "2356597", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2356597"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl\nIn the \"pmcmd_ioctl\" function, three memory objects allocated by\nkmalloc are initialized by \"hcall_get_cpu_state\", which are then\ncopied to user space. The initializer is indeed implemented in\n\"acrn_hypercall2\" (arch/x86/include/asm/acrn.h). There is a risk of\ninformation leakage due to uninitialized bytes."], "name": "CVE-2025-21950", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-04-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21950\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21950\nhttps://lore.kernel.org/linux-cve-announce/2025040136-CVE-2025-21950-11d2@gregkh/T"], "threat_severity": "Low"}

{}