CVE-2026-43224

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{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["io_uring/zcrx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f1ae403324311e143ef20e53cf9a5f01e312f7c9", "status": "affected", "version": "439a98b972fbb1991819b5367f482cd4161ba39c", "versionType": "git"}, {"lessThan": "ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60", "status": "affected", "version": "439a98b972fbb1991819b5367f482cd4161ba39c", "versionType": "git"}, {"lessThan": "a983aae397767e9da931128ff2b5bf9066513ce3", "status": "affected", "version": "439a98b972fbb1991819b5367f482cd4161ba39c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["io_uring/zcrx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"lessThan": "6.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.16", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E0D300DB-AA68-4962-981D-EF9F5E97AACF", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "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\nio_uring/zcrx: fix sgtable leak on mapping failures\n\nIn an unlikely case when io_populate_area_dma() fails, which could only\nhappen on a PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA machine,\nio_zcrx_map_area() will have an initialised and not freed table. It was\nsupposed to be cleaned up in the error path, but !is_mapped prevents\nthat."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nio_uring/zcrx: soluci\u00f3n a la fuga de sgtable en fallos de mapeo\n\nEn un caso improbable cuando io_populate_area_dma() falla, lo que solo podr\u00eda ocurrir en una m\u00e1quina PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA, io_zcrx_map_area() tendr\u00e1 una tabla inicializada y no liberada. Se supon\u00eda que deb\u00eda limpiarse en la ruta de error, pero !is_mapped lo impide."}], "id": "CVE-2026-43224", "lastModified": "2026-11-11T20:10:00.273", "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": "2026-05-06T12:16:42.153", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a983aae397767e9da931128ff2b5bf9066513ce3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f1ae403324311e143ef20e53cf9a5f01e312f7c9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: io_uring/zcrx: fix sgtable leak on mapping failures", "id": "2467229", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467229"}, "csaw": false, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's io_uring/zcrx subsystem. Under specific conditions, a failure in memory mapping operations can result in a scatter-gather table (sgtable), which manages memory regions, not being properly freed. This memory leak could lead to resource exhaustion and potentially cause system instability or a denial of service (DoS)."], "name": "CVE-2026-43224", "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": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43224\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43224\nhttps://lore.kernel.org/linux-cve-announce/2026050654-CVE-2026-43224-502e@gregkh/T"]}

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