{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-22070", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.814Z", "datePublished": "2025-04-16T14:12:23.295Z", "dateUpdated": "2025-05-04T07:29:02.994Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:29:02.994Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/9p: fix NULL pointer dereference on mkdir\n\nWhen a 9p tree was mounted with option 'posixacl', parent directory had a\ndefault ACL set for its subdirectories, e.g.:\n\n setfacl -m default:group:simpsons:rwx parentdir\n\nthen creating a subdirectory crashed 9p client, as v9fs_fid_add() call in\nfunction v9fs_vfs_mkdir_dotl() sets the passed 'fid' pointer to NULL\n(since dafbe689736) even though the subsequent v9fs_set_create_acl() call\nexpects a valid non-NULL 'fid' pointer:\n\n [ 37.273191] BUG: kernel NULL pointer dereference, address: 0000000000000000\n ...\n [ 37.322338] Call Trace:\n [ 37.323043] <TASK>\n [ 37.323621] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434)\n [ 37.324448] ? page_fault_oops (arch/x86/mm/fault.c:714)\n [ 37.325532] ? search_module_extables (kernel/module/main.c:3733)\n [ 37.326742] ? p9_client_walk (net/9p/client.c:1165) 9pnet\n [ 37.328006] ? search_bpf_extables (kernel/bpf/core.c:804)\n [ 37.329142] ? exc_page_fault (./arch/x86/include/asm/paravirt.h:686 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538)\n [ 37.330196] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:574)\n [ 37.331330] ? p9_client_walk (net/9p/client.c:1165) 9pnet\n [ 37.332562] ? v9fs_fid_xattr_get (fs/9p/xattr.c:30) 9p\n [ 37.333824] v9fs_fid_xattr_set (fs/9p/fid.h:23 fs/9p/xattr.c:121) 9p\n [ 37.335077] v9fs_set_acl (fs/9p/acl.c:276) 9p\n [ 37.336112] v9fs_set_create_acl (fs/9p/acl.c:307) 9p\n [ 37.337326] v9fs_vfs_mkdir_dotl (fs/9p/vfs_inode_dotl.c:411) 9p\n [ 37.338590] vfs_mkdir (fs/namei.c:4313)\n [ 37.339535] do_mkdirat (fs/namei.c:4336)\n [ 37.340465] __x64_sys_mkdir (fs/namei.c:4354)\n [ 37.341455] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\n [ 37.342447] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nFix this by simply swapping the sequence of these two calls in\nv9fs_vfs_mkdir_dotl(), i.e. calling v9fs_set_create_acl() before\nv9fs_fid_add()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/9p/vfs_inode_dotl.c"], "versions": [{"version": "dafbe689736f62c696ac64809b17bdc752cfbe76", "lessThan": "8522051c58d68146b93e8a5ba9987e83b3d64e7b", "status": "affected", "versionType": "git"}, {"version": "dafbe689736f62c696ac64809b17bdc752cfbe76", "lessThan": "2139dea5c53e3bb63ac49a6901c85e525a80ee8a", "status": "affected", "versionType": "git"}, {"version": "dafbe689736f62c696ac64809b17bdc752cfbe76", "lessThan": "6517b395cb1e43fbf3962dd93e6fb4a5e5ab100e", "status": "affected", "versionType": "git"}, {"version": "dafbe689736f62c696ac64809b17bdc752cfbe76", "lessThan": "3f61ac7c65bdb26accb52f9db66313597e759821", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/9p/vfs_inode_dotl.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.23", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13.11", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.2", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15-rc1", "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": "6.0", "versionEndExcluding": "6.12.23"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.13.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.14.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.15-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8522051c58d68146b93e8a5ba9987e83b3d64e7b"}, {"url": "https://git.kernel.org/stable/c/2139dea5c53e3bb63ac49a6901c85e525a80ee8a"}, {"url": "https://git.kernel.org/stable/c/6517b395cb1e43fbf3962dd93e6fb4a5e5ab100e"}, {"url": "https://git.kernel.org/stable/c/3f61ac7c65bdb26accb52f9db66313597e759821"}], "title": "fs/9p: fix NULL pointer dereference on mkdir", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "182A5D52-C727-4186-80D8-2F727FAAA54D", "versionEndExcluding": "6.12.23", "versionStartIncluding": "6.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E7E864B0-8C00-4679-BA55-659B4C9C3AD3", "versionEndExcluding": "6.13.11", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FADAE5D8-4808-442C-B218-77B2CE8780A0", "versionEndExcluding": "6.14.2", "versionStartIncluding": "6.14", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/9p: fix NULL pointer dereference on mkdir\n\nWhen a 9p tree was mounted with option 'posixacl', parent directory had a\ndefault ACL set for its subdirectories, e.g.:\n\n setfacl -m default:group:simpsons:rwx parentdir\n\nthen creating a subdirectory crashed 9p client, as v9fs_fid_add() call in\nfunction v9fs_vfs_mkdir_dotl() sets the passed 'fid' pointer to NULL\n(since dafbe689736) even though the subsequent v9fs_set_create_acl() call\nexpects a valid non-NULL 'fid' pointer:\n\n [ 37.273191] BUG: kernel NULL pointer dereference, address: 0000000000000000\n ...\n [ 37.322338] Call Trace:\n [ 37.323043] <TASK>\n [ 37.323621] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434)\n [ 37.324448] ? page_fault_oops (arch/x86/mm/fault.c:714)\n [ 37.325532] ? search_module_extables (kernel/module/main.c:3733)\n [ 37.326742] ? p9_client_walk (net/9p/client.c:1165) 9pnet\n [ 37.328006] ? search_bpf_extables (kernel/bpf/core.c:804)\n [ 37.329142] ? exc_page_fault (./arch/x86/include/asm/paravirt.h:686 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538)\n [ 37.330196] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:574)\n [ 37.331330] ? p9_client_walk (net/9p/client.c:1165) 9pnet\n [ 37.332562] ? v9fs_fid_xattr_get (fs/9p/xattr.c:30) 9p\n [ 37.333824] v9fs_fid_xattr_set (fs/9p/fid.h:23 fs/9p/xattr.c:121) 9p\n [ 37.335077] v9fs_set_acl (fs/9p/acl.c:276) 9p\n [ 37.336112] v9fs_set_create_acl (fs/9p/acl.c:307) 9p\n [ 37.337326] v9fs_vfs_mkdir_dotl (fs/9p/vfs_inode_dotl.c:411) 9p\n [ 37.338590] vfs_mkdir (fs/namei.c:4313)\n [ 37.339535] do_mkdirat (fs/namei.c:4336)\n [ 37.340465] __x64_sys_mkdir (fs/namei.c:4354)\n [ 37.341455] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\n [ 37.342447] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nFix this by simply swapping the sequence of these two calls in\nv9fs_vfs_mkdir_dotl(), i.e. calling v9fs_set_create_acl() before\nv9fs_fid_add()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fs/9p: corregir la desreferencia de puntero NULL en mkdir Cuando se montaba un \u00e1rbol 9p con la opci\u00f3n 'posixacl', el directorio padre ten\u00eda una ACL predeterminada establecida para sus subdirectorios, p. ej.: setfacl -m default:group:simpsons:rwx parentdir luego, la creaci\u00f3n de un subdirectorio hac\u00eda que el cliente 9p se bloqueara, ya que la llamada v9fs_fid_add() en la funci\u00f3n v9fs_vfs_mkdir_dotl() establece el puntero 'fid' pasado en NULL (desde dafbe689736) aunque la llamada v9fs_set_create_acl() posterior espera un puntero 'fid' no NULL v\u00e1lido: [ 37.273191] ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000000 ... [ 37.322338] Rastreo de llamadas: [ 37.323043] [ 37.323621] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434) [ 37.324448] ? page_fault_oops (arch/x86/mm/fault.c:714) [ 37.325532] ? search_module_extables (kernel/module/main.c:3733) [ 37.326742] ? p9_client_walk (net/9p/client.c:1165) 9pnet [ 37.328006] ? search_bpf_extables (kernel/bpf/core.c:804) [ 37.329142] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:574) [ 37.331330] ? p9_client_walk (net/9p/client.c:1165) 9pnet [ 37.332562] ? v9fs_fid_xattr_get (fs/9p/xattr.c:30) 9p [ 37.333824] v9fs_fid_xattr_set (fs/9p/fid.h:23 fs/9p/xattr.c:121) 9p [ 37.335077] v9fs_set_acl (fs/9p/acl.c:276) 9p [ 37.336112] v9fs_set_create_acl (fs/9p/acl.c:307) 9p [ 37.337326] v9fs_vfs_mkdir_dotl (fs/9p/vfs_inode_dotl.c:411) 9p [ 37.338590] vfs_mkdir (fs/namei.c:4313) [ 37.339535] do_mkdirat (fs/namei.c:4336) [ 37.340465] __x64_sys_mkdir (fs/namei.c:4354) [ 37.341455] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 37.342447] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Solucione esto simplemente intercambiando la secuencia de estas dos llamadas en v9fs_vfs_mkdir_dotl(), es decir, llamando a v9fs_set_create_acl() antes v9fs_fid_add()."}], "id": "CVE-2025-22070", "lastModified": "2025-05-06T16:40:30.763", "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": "[email protected]", "type": "Primary"}]}, "published": "2025-04-16T15:16:01.193", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2139dea5c53e3bb63ac49a6901c85e525a80ee8a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3f61ac7c65bdb26accb52f9db66313597e759821"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6517b395cb1e43fbf3962dd93e6fb4a5e5ab100e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8522051c58d68146b93e8a5ba9987e83b3d64e7b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: fs/9p: fix NULL pointer dereference on mkdir", "id": "2360237", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2360237"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nfs/9p: fix NULL pointer dereference on mkdir\nWhen a 9p tree was mounted with option 'posixacl', parent directory had a\ndefault ACL set for its subdirectories, e.g.:\nsetfacl -m default:group:simpsons:rwx parentdir\nthen creating a subdirectory crashed 9p client, as v9fs_fid_add() call in\nfunction v9fs_vfs_mkdir_dotl() sets the passed 'fid' pointer to NULL\n(since dafbe689736) even though the subsequent v9fs_set_create_acl() call\nexpects a valid non-NULL 'fid' pointer:\n[ 37.273191] BUG: kernel NULL pointer dereference, address: 0000000000000000\n...\n[ 37.322338] Call Trace:\n[ 37.323043] <TASK>\n[ 37.323621] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434)\n[ 37.324448] ? page_fault_oops (arch/x86/mm/fault.c:714)\n[ 37.325532] ? search_module_extables (kernel/module/main.c:3733)\n[ 37.326742] ? p9_client_walk (net/9p/client.c:1165) 9pnet\n[ 37.328006] ? search_bpf_extables (kernel/bpf/core.c:804)\n[ 37.329142] ? exc_page_fault (./arch/x86/include/asm/paravirt.h:686 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538)\n[ 37.330196] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:574)\n[ 37.331330] ? p9_client_walk (net/9p/client.c:1165) 9pnet\n[ 37.332562] ? v9fs_fid_xattr_get (fs/9p/xattr.c:30) 9p\n[ 37.333824] v9fs_fid_xattr_set (fs/9p/fid.h:23 fs/9p/xattr.c:121) 9p\n[ 37.335077] v9fs_set_acl (fs/9p/acl.c:276) 9p\n[ 37.336112] v9fs_set_create_acl (fs/9p/acl.c:307) 9p\n[ 37.337326] v9fs_vfs_mkdir_dotl (fs/9p/vfs_inode_dotl.c:411) 9p\n[ 37.338590] vfs_mkdir (fs/namei.c:4313)\n[ 37.339535] do_mkdirat (fs/namei.c:4336)\n[ 37.340465] __x64_sys_mkdir (fs/namei.c:4354)\n[ 37.341455] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\n[ 37.342447] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\nFix this by simply swapping the sequence of these two calls in\nv9fs_vfs_mkdir_dotl(), i.e. calling v9fs_set_create_acl() before\nv9fs_fid_add()."], "name": "CVE-2025-22070", "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": "2025-04-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-22070\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-22070\nhttps://lore.kernel.org/linux-cve-announce/2025041610-CVE-2025-22070-4509@gregkh/T"], "threat_severity": "Moderate"}