CVE-2024-26710

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Se considera que KASAN aumenta el uso de la pila, hasta el punto de que se inform\u00f3 que provoca un desbordamiento de la pila en algunas m\u00e1quinas de 32 bits ( ver enlace). Para evitar desbordamientos, el tama\u00f1o de la pila se duplic\u00f3 para las compilaciones de KASAN en el commit 3e8635fb2e07 (\"powerpc/kasan: Forzar el aumento del tama\u00f1o del subproceso con KASAN\"). Sin embargo, con un tama\u00f1o de pila de 32 KB para empezar, la duplicaci\u00f3n conduce a una pila de 64 KB, lo que provoca errores de compilaci\u00f3n: arch/powerpc/kernel/switch.S:249: Error: operando fuera de rango (0x000000000000fe50 no est\u00e1 entre 0xffffffffffff8000 y 0x00000000000007fff) Aunque el conjunto podr\u00eda modificarse, en la pr\u00e1ctica una pila de 32 KB parece suficiente incluso para compilaciones KASAN; el uso adicional parece estar en el rango de 2 a 3 KB para una compilaci\u00f3n KASAN de 64 bits. Por lo tanto, solo aumente la pila para KASAN si el tama\u00f1o de la pila es &lt;32 KB."}], "id": "CVE-2024-26710", "lastModified": "2026-06-17T07:18:09.263", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-26710", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-04-03T17:38:18.725321Z", "version": "2.0.3"}}]}, "published": "2024-04-03T15:15:53.487", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4cc31fa07445879a13750cb061bb8c2654975fcb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b29b16bd836a838b7690f80e37f8376414c74cbe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f1acb109505d983779bbb7e20a1ee6244d2b5736"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f9a4c401bf4c5af3437ad221c0a5880a518068d4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4297217bcf1f0948a19c2bacc6b68d92e7778ad9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4cc31fa07445879a13750cb061bb8c2654975fcb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b29b16bd836a838b7690f80e37f8376414c74cbe"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f1acb109505d983779bbb7e20a1ee6244d2b5736"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: powerpc/kasan: Limit KASAN thread size increase to 32KB", "id": "2273162", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273162"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-121", "details": ["In the Linux kernel, the following vulnerability has been resolved:\npowerpc/kasan: Limit KASAN thread size increase to 32KB\nKASAN is seen to increase stack usage, to the point that it was reported\nto lead to stack overflow on some 32-bit machines (see link).\nTo avoid overflows the stack size was doubled for KASAN builds in\ncommit 3e8635fb2e07 (\"powerpc/kasan: Force thread size increase with\nKASAN\").\nHowever with a 32KB stack size to begin with, the doubling leads to a\n64KB stack, which causes build errors:\narch/powerpc/kernel/switch.S:249: Error: operand out of range (0x000000000000fe50 is not between 0xffffffffffff8000 and 0x0000000000007fff)\nAlthough the asm could be reworked, in practice a 32KB stack seems\nsufficient even for KASAN builds - the additional usage seems to be in\nthe 2-3KB range for a 64-bit KASAN build.\nSo only increase the stack for KASAN if the stack size is < 32KB.", "A vulnerability was found in the Linux kernel due to improper stack size incrementation logic for KASAN-enabled builds, which in turn could cause kernel panics, build errors, or system instability."], "name": "CVE-2024-26710", "package_state": [{"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": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26710\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26710\nhttps://lore.kernel.org/linux-cve-announce/2024040342-CVE-2024-26710-6332@gregkh/T"], "statement": "None of the products shipped by Red Hat are affected by this vulnerability.", "threat_severity": "Moderate"}

{}