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Initialize 'pi' instead to\n'&ata_dummy_port_info' to fix the possible kernel oops for good...\n\nFound by Linux Verification Center (linuxtesting.org) with the SVACE static\nanalysis tool."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo() En un caso improbable (\u00bfy probablemente err\u00f3neo?) de que el par\u00e1metro 'ppi' de ata_host_alloc_pinfo() apunte a una matriz que comience con un puntero NULL, habr\u00e1 un error en el kernel ya que la variable local 'pi' no se reasignar\u00e1 desde el valor inicial de NULL. Inicialice 'pi' en su lugar a '&ata_dummy_port_info' para corregir el posible error en el kernel para siempre... Encontrado por Linux Verification Center (linuxtesting.org) con la herramienta de an\u00e1lisis est\u00e1tico SVACE. "}], "id": "CVE-2022-49731", "lastModified": "2025-10-01T20:17:09.370", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-02-26T07:01:48.710", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/07cbdb4807d369fbda73062a91b570c4dc5ec429"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1ac5efee33f29e704226506d429b84575a5d66f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/253334f84c81bc6a43af489f108c0bddad989eef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36cd19e7d4e5571d77a2ed20c5b6ef50cf57734a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a810bd5af06977a847d1f202b22d7defd5c62497"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bf476fe22aa1851bab4728e0c49025a6a0bea307"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ca4693e6e06e4fd2b240c0fec47aa2498c94848e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ff128fbea720bf763fa345680dda5f050bc24a47"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:6583", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}, {"advisory": "RHSA-2023:6583", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.8.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-11-07T00:00:00Z"}], "bugzilla": {"description": "kernel: ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()", "id": "2348194", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348194"}, "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": "verified"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()\nIn an unlikely (and probably wrong?) case that the 'ppi' parameter of\nata_host_alloc_pinfo() points to an array starting with a NULL pointer,\nthere's going to be a kernel oops as the 'pi' local variable won't get\nreassigned from the initial value of NULL. Initialize 'pi' instead to\n'&ata_dummy_port_info' to fix the possible kernel oops for good...\nFound by Linux Verification Center (linuxtesting.org) with the SVACE static\nanalysis tool.", "A flaw was found in the libata module in the Linux kernel. A NULL pointer dereference can be triggered in the unlikely case that the PPI, an array of ATA port_info, argument of the ata_host_alloc_pinfo function is NULL. This issue causes a crash and results in a denial of service."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2022-49731", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49731\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49731\nhttps://lore.kernel.org/linux-cve-announce/2025022634-CVE-2022-49731-c7ba@gregkh/T"], "statement": "This issue has been fixed in Red Hat Enterprise Linux 9.3 via RHSA-2023:6583 [1].\n[1]. https://access.redhat.com/errata/RHSA-2023:6583", "threat_severity": "Low"}

{}