CVE-2026-64314

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{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["crypto/chacha20poly1305.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0016d3c21c6ab60a20be7f565cefb5999f3adeb6", "status": "affected", "version": "a298765e28adaea199f722142c10dae7e24dedf8", "versionType": "git"}, {"lessThan": "e74df53b36cdc6b6b9e5488ec883d1d55624737f", "status": "affected", "version": "a298765e28adaea199f722142c10dae7e24dedf8", "versionType": "git"}, {"lessThan": "265b861bece38318b8e0fc8fac0643d4ef906d31", "status": "affected", "version": "a298765e28adaea199f722142c10dae7e24dedf8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["crypto/chacha20poly1305.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.16"}, {"lessThan": "6.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.39", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFBD7467-7FB0-4538-9CC0-98199E9EC402", "versionEndExcluding": "6.18.39", "versionStartIncluding": "6.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42", "versionEndExcluding": "7.1.4", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: chacha20poly1305 - validate poly1305 template argument\n\nchachapoly_create() still accepts the compatibility poly1305 parameter\nin the template name, but it assumes the second template argument is\nalways present and immediately passes it to strcmp().\n\nWhen the argument is missing, crypto_attr_alg_name() returns an error\npointer. Check for that before comparing the name so malformed template\ninstantiations fail with an error instead of dereferencing the error\npointer in strcmp().\n\nThis matches the surrounding Crypto API template pattern where\ncrypto_attr_alg_name() results are validated before string-specific use."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncrypto: chacha20poly1305 - validar argumento de plantilla poly1305\n\nchachapoly_create() a\u00fan acepta el par\u00e1metro de compatibilidad poly1305 en el nombre de la plantilla, pero asume que el segundo argumento de plantilla siempre est\u00e1 presente y lo pasa inmediatamente a strcmp().\n\nCuando falta el argumento, crypto_attr_alg_name() devuelve un puntero de error. Comprobar eso antes de comparar el nombre para que las instanciaciones de plantilla mal formadas fallen con un error en lugar de desreferenciar el puntero de error en strcmp().\n\nEsto coincide con el patr\u00f3n de plantilla de la API de Criptograf\u00eda circundante donde los resultados de crypto_attr_alg_name() se validan antes de su uso espec\u00edfico de cadena."}], "id": "CVE-2026-64314", "lastModified": "2026-10-24T13:10:00.147", "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": "2026-07-25T10:17:12.647", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0016d3c21c6ab60a20be7f565cefb5999f3adeb6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/265b861bece38318b8e0fc8fac0643d4ef906d31"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e74df53b36cdc6b6b9e5488ec883d1d55624737f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: crypto: chacha20poly1305 - validate poly1305 template argument", "id": "2507259", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507259"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's `chacha20poly1305` cryptographic module. This vulnerability occurs because the `chachapoly_create()` function does not properly validate a `poly1305` template argument. When this argument is missing, an error pointer is incorrectly passed to a string comparison function, leading to a dereference of the error pointer. This can result in a system crash, causing a Denial of Service (DoS) for affected systems."], "name": "CVE-2026-64314", "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": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64314\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64314\nhttps://lore.kernel.org/linux-cve-announce/2026072509-CVE-2026-64314-89f3@gregkh/T"]}

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