{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-50199", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.969Z", "datePublished": "2024-11-08T05:54:13.403Z", "dateUpdated": "2025-05-04T09:48:32.285Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:48:32.285Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/swapfile: skip HugeTLB pages for unuse_vma\n\nI got a bad pud error and lost a 1GB HugeTLB when calling swapoff. The\nproblem can be reproduced by the following steps:\n\n 1. Allocate an anonymous 1GB HugeTLB and some other anonymous memory.\n 2. Swapout the above anonymous memory.\n 3. run swapoff and we will get a bad pud error in kernel message:\n\n mm/pgtable-generic.c:42: bad pud 00000000743d215d(84000001400000e7)\n\nWe can tell that pud_clear_bad is called by pud_none_or_clear_bad in\nunuse_pud_range() by ftrace. And therefore the HugeTLB pages will never\nbe freed because we lost it from page table. We can skip HugeTLB pages\nfor unuse_vma to fix it."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/swapfile.c"], "versions": [{"version": "0fe6e20b9c4c53b3e97096ee73a0857f60aad43f", "lessThan": "ba7f982cdb37ff5a7739dec85d7325ea66fc1496", "status": "affected", "versionType": "git"}, {"version": "0fe6e20b9c4c53b3e97096ee73a0857f60aad43f", "lessThan": "417d5838ca73c6331ae2fe692fab6c25c00d9a0b", "status": "affected", "versionType": "git"}, {"version": "0fe6e20b9c4c53b3e97096ee73a0857f60aad43f", "lessThan": "e41710f5a61aca9d6baaa8f53908a927dd9e7aa7", "status": "affected", "versionType": "git"}, {"version": "0fe6e20b9c4c53b3e97096ee73a0857f60aad43f", "lessThan": "6ec0fe3756f941f42f8c57156b8bdf2877b2ebaf", "status": "affected", "versionType": "git"}, {"version": "0fe6e20b9c4c53b3e97096ee73a0857f60aad43f", "lessThan": "bed2b9037806c62166a0ef9a559a1e7e3e1275b8", "status": "affected", "versionType": "git"}, {"version": "0fe6e20b9c4c53b3e97096ee73a0857f60aad43f", "lessThan": "eb66a833cdd2f7302ee05d05e0fa12a2ca32eb87", "status": "affected", "versionType": "git"}, {"version": "0fe6e20b9c4c53b3e97096ee73a0857f60aad43f", "lessThan": "7528c4fb1237512ee18049f852f014eba80bbe8d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/swapfile.c"], "versions": [{"version": "2.6.36", "status": "affected"}, {"version": "0", "lessThan": "2.6.36", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.285", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.228", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.169", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.114", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.58", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.5", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "5.4.285"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "5.10.228"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "5.15.169"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.1.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.6.58"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.11.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ba7f982cdb37ff5a7739dec85d7325ea66fc1496"}, {"url": "https://git.kernel.org/stable/c/417d5838ca73c6331ae2fe692fab6c25c00d9a0b"}, {"url": "https://git.kernel.org/stable/c/e41710f5a61aca9d6baaa8f53908a927dd9e7aa7"}, {"url": "https://git.kernel.org/stable/c/6ec0fe3756f941f42f8c57156b8bdf2877b2ebaf"}, {"url": "https://git.kernel.org/stable/c/bed2b9037806c62166a0ef9a559a1e7e3e1275b8"}, {"url": "https://git.kernel.org/stable/c/eb66a833cdd2f7302ee05d05e0fa12a2ca32eb87"}, {"url": "https://git.kernel.org/stable/c/7528c4fb1237512ee18049f852f014eba80bbe8d"}], "title": "mm/swapfile: skip HugeTLB pages for unuse_vma", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/swapfile: skip HugeTLB pages for unuse_vma\n\nI got a bad pud error and lost a 1GB HugeTLB when calling swapoff. The\nproblem can be reproduced by the following steps:\n\n 1. Allocate an anonymous 1GB HugeTLB and some other anonymous memory.\n 2. Swapout the above anonymous memory.\n 3. run swapoff and we will get a bad pud error in kernel message:\n\n mm/pgtable-generic.c:42: bad pud 00000000743d215d(84000001400000e7)\n\nWe can tell that pud_clear_bad is called by pud_none_or_clear_bad in\nunuse_pud_range() by ftrace. And therefore the HugeTLB pages will never\nbe freed because we lost it from page table. We can skip HugeTLB pages\nfor unuse_vma to fix it."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/swapfile: omitir p\u00e1ginas HugeTLB para unuse_vma Obtuve un error pud incorrecto y perd\u00ed un HugeTLB de 1 GB al llamar a swapoff. El problema se puede reproducir mediante los siguientes pasos: 1. Asignar un HugeTLB an\u00f3nimo de 1 GB y otra memoria an\u00f3nima. 2. Intercambiar la memoria an\u00f3nima anterior. 3. Ejecutar swapoff y obtendremos un error pud incorrecto en el mensaje del kernel: mm/pgtable-generic.c:42: bad pud 00000000743d215d(84000001400000e7) Podemos decir que pud_clear_bad es llamado por pud_none_or_clear_bad en unuse_pud_range() por ftrace. Y por lo tanto, las p\u00e1ginas HugeTLB nunca se liberar\u00e1n porque las perdimos de la tabla de p\u00e1ginas. Podemos omitir las p\u00e1ginas HugeTLB para unuse_vma para solucionarlo."}], "id": "CVE-2024-50199", "lastModified": "2024-11-08T19:01:03.880", "metrics": {}, "published": "2024-11-08T06:15:16.527", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/417d5838ca73c6331ae2fe692fab6c25c00d9a0b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6ec0fe3756f941f42f8c57156b8bdf2877b2ebaf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7528c4fb1237512ee18049f852f014eba80bbe8d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ba7f982cdb37ff5a7739dec85d7325ea66fc1496"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bed2b9037806c62166a0ef9a559a1e7e3e1275b8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e41710f5a61aca9d6baaa8f53908a927dd9e7aa7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb66a833cdd2f7302ee05d05e0fa12a2ca32eb87"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: mm/swapfile: skip HugeTLB pages for unuse_vma", "id": "2324645", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2324645"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm/swapfile: skip HugeTLB pages for unuse_vma\nI got a bad pud error and lost a 1GB HugeTLB when calling swapoff. The\nproblem can be reproduced by the following steps:\n1. Allocate an anonymous 1GB HugeTLB and some other anonymous memory.\n2. Swapout the above anonymous memory.\n3. run swapoff and we will get a bad pud error in kernel message:\nmm/pgtable-generic.c:42: bad pud 00000000743d215d(84000001400000e7)\nWe can tell that pud_clear_bad is called by pud_none_or_clear_bad in\nunuse_pud_range() by ftrace. And therefore the HugeTLB pages will never\nbe freed because we lost it from page table. We can skip HugeTLB pages\nfor unuse_vma to fix it."], "name": "CVE-2024-50199", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-11-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50199\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50199\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/tree/cve/published/2024/CVE-2024-50199.mbox"], "threat_severity": "Moderate"}