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Por lo tanto, devuelve directamente ENOMEM, si kasprintf() devuelve un puntero NULL."}], "id": "CVE-2022-49832", "lastModified": "2025-11-10T19:57:51.190", "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"}]}, "published": "2025-05-01T15:16:06.673", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/040f726fecd88121f3b95e70369785ad452dddf9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5834a3a98cd266ad35a229923c0adbd0addc8d68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/777430aa4ddccaa5accec6db90ffc1d47f00d471"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91d5c5060ee24fe8da88cd585bb43b843d2f0dce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/97e5b508e96176f1a73888ed89df396d7041bfcb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a988dcd3dd9e691c5ccc3324b209688f3b5453e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aaf552c5d53abe4659176e099575fe870d2e4768"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b4d9f55cd38435358bc16d580612bc0d798d7b4c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map", "id": "2363449", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363449"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\npinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map\nHere is the BUG report by KASAN about null pointer dereference:\nBUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50\nRead of size 1 at addr 0000000000000000 by task python3/2640\nCall Trace:\nstrcmp\n__of_find_property\nof_find_property\npinctrl_dt_to_map\nkasprintf() would return NULL pointer when kmalloc() fail to allocate.\nSo directly return ENOMEM, if kasprintf() return NULL pointer."], "name": "CVE-2022-49832", "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": "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", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49832\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49832\nhttps://lore.kernel.org/linux-cve-announce/2025050137-CVE-2022-49832-d04a@gregkh/T"], "statement": "A local denial-of-service vulnerability exists in the Linux kernel's pin control subsystem. When kasprintf() fails due to memory exhaustion, the returned NULL pointer is not checked, resulting in a NULL pointer dereference during a subsequent call to strcmp(). This issue can be triggered by a local attacker who manages to exhaust kernel memory (kmalloc failure) in a context where pinctrl_dt_to_map() is executed \u2014 such as via device-tree based driver initialization. Privileges Required is High, because requires control over kernel memory allocation environment or device-tree context (e.g., during module loading or crafted devicetree blob).", "threat_severity": "Moderate"}

{"created": "2025-06-24T09:51:40.193718+00:00", "updated": "2025-06-24T09:51:40.193769+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}