CVE-2026-46302

{"id": "CVE-2026-46302", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "cee74f47a6baba0ac457e87687fdcf0abd599f0a", "lessThan": "714362f3779dfa453a78ced32396a72726962a41", "versionType": "git"}, {"status": "affected", "version": "cee74f47a6baba0ac457e87687fdcf0abd599f0a", "lessThan": "a02cd6805562305f936e807da83e253b719dd965", "versionType": "git"}], "programFiles": ["security/selinux/selinuxfs.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.37"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.37", "versionType": "semver"}, {"status": "unaffected", "version": "7.0.7", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["security/selinux/selinuxfs.c"], "defaultStatus": "affected"}]}], "published": "2026-06-08T17:16:48.707", "references": [{"url": "https://git.kernel.org/stable/c/714362f3779dfa453a78ced32396a72726962a41", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a02cd6805562305f936e807da83e253b719dd965", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: allow multiple opens of /sys/fs/selinux/policy\n\nCurrently there can only be a single open of /sys/fs/selinux/policy at\nany time. This allows any process to block any other process from\nreading the kernel policy. The original motivation seems to have been\na mix of preventing an inconsistent view of the policy size and\npreventing userspace from allocating kernel memory without bound, but\nthis is arguably equally bad. Eliminate the policy_opened flag and\nshrink the critical section that the policy mutex is held. While we\nare making changes here, drop a couple of extraneous BUG_ONs."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nselinux: permitir m\u00faltiples aperturas de /sys/fs/selinux/policy\n\nActualmente solo puede haber una \u00fanica apertura de /sys/fs/selinux/policy en cualquier momento. Esto permite a cualquier proceso bloquear a cualquier otro proceso de leer la pol\u00edtica del kernel. La motivaci\u00f3n original parece haber sido una mezcla de prevenir una vista inconsistente del tama\u00f1o de la pol\u00edtica y evitar que el espacio de usuario asigne memoria del kernel sin l\u00edmites, pero esto es, discutiblemente, igual de malo. Eliminar el indicador policy_opened y reducir la secci\u00f3n cr\u00edtica en la que se mantiene el mutex de la pol\u00edtica. Mientras estamos haciendo cambios aqu\u00ed, eliminar un par de BUG_ONs superfluos."}], "lastModified": "2026-07-23T08:10:00.137", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DA80713D-F193-4E13-A301-ABB21A01CE03", "versionEndExcluding": "7.0.7", "versionStartIncluding": "2.6.37"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}