CVE-2024-47723

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Therefore, a bounds check should be added in dbMount().\n\nAnd in dbNextAG(), a check for the case where agpref is greater than\nbmp->db_numag should be added, so an out-of-bounds exception should be\nprevented.\n\nAdditionally, a check for the case where agno is greater or same than\nMAXAG should be added in diAlloc() to prevent out-of-bounds."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerability is reached through ordinary local syscalls (mkdir/creat/symlink) on a mounted JFS filesystem, after the attacker supplies a crafted image via removable media or a disk image file. There is no network-facing path to JFS metadata parsing.\nAC:L - Every input is deterministic on-disk metadata the attacker fully controls (dn_numag, db_agl2size, iag->agstart), and the decisive overlap of im_agctl[128] with the im_ipimap inode pointer is fixed by struct layout, so no race, no heap grooming, and no memory-layout luck is required.\nPR:L - Only an unprivileged local session user is needed in the realistic case: udisks2/polkit auto-mounts jfs removable media read-write for the active desktop/kiosk user, and triggering the OOB then requires nothing more than creating a file on that mount.\nUI:N - The attacker performs both steps themselves \u2014 inserting/mounting the malicious image and issuing the file-creation syscall \u2014 so no separate victim needs to act.\nS:U - The corruption is confined to kernel heap objects owned by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - dbNextAG() reads db_agfree[]/db_active[] arbitrarily far past the kmalloc'd struct bmap and diAlloc() reads im_agctl[] out of bounds, leaking adjacent kernel heap contents into allocation decisions; the overwritten im_ipimap pointer additionally yields a controlled-dereference read primitive.\nI:H - imap->im_agctl[128].inofree/.extfree write attacker-chosen 32-bit values directly over the struct inode *im_ipimap pointer that is subsequently dereferenced, and mutex_lock() is performed on out-of-bounds memory \u2014 a controlled kernel-pointer overwrite suitable for control-flow hijacking.\nA:H - The unbounded agpref walk in dbNextAG() dereferences unmapped memory and the corrupted im_ipimap pointer is later dereferenced, both producing a kernel oops/panic."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/jfs/jfs_dmap.c", "fs/jfs/jfs_imap.c"], "versions": [{"version": 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There is no network-facing path to JFS metadata parsing.\nAC:L - Every input is deterministic on-disk metadata the attacker fully controls (dn_numag, db_agl2size, iag->agstart), and the decisive overlap of im_agctl[128] with the im_ipimap inode pointer is fixed by struct layout, so no race, no heap grooming, and no memory-layout luck is required.\nPR:L - Only an unprivileged local session user is needed in the realistic case: udisks2/polkit auto-mounts jfs removable media read-write for the active desktop/kiosk user, and triggering the OOB then requires nothing more than creating a file on that mount.\nUI:N - The attacker performs both steps themselves \u2014 inserting/mounting the malicious image and issuing the file-creation syscall \u2014 so no separate victim needs to act.\nS:U - The corruption is confined to kernel heap objects owned by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - dbNextAG() reads db_agfree[]/db_active[] arbitrarily far past the kmalloc'd struct bmap and diAlloc() reads im_agctl[] out of bounds, leaking adjacent kernel heap contents into allocation decisions; the overwritten im_ipimap pointer additionally yields a controlled-dereference read primitive.\nI:H - imap->im_agctl[128].inofree/.extfree write attacker-chosen 32-bit values directly over the struct inode *im_ipimap pointer that is subsequently dereferenced, and mutex_lock() is performed on out-of-bounds memory \u2014 a controlled kernel-pointer overwrite suitable for control-flow hijacking.\nA:H - The unbounded agpref walk in dbNextAG() dereferences unmapped memory and the corrupted im_ipimap pointer is later dereferenced, both producing a kernel oops/panic."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "d1017d2a0f3f16dc1db5120e7ddbe7c6680425b0", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "5ad6284c8d433f8a213111c5c44ead4d9705b622", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "0338e66cba272351ca9d7d03f3628e390e70963b", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ead82533278502428883085a787d5a00f15e5eb9", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "6ce8b6ab44a8b5918c0ee373d4ad19d19017931b", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "c1ba4b8ca799ff1d99d01f37d7ccb7d5ba5533d2", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "128d5cfdcf844cb690c9295a3a1c1114c21fc15a", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "96855f40e152989c9e7c20c4691ace5581098acc", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e63866a475562810500ea7f784099bfe341e761a", "versionType": "git"}], "programFiles": ["fs/jfs/jfs_dmap.c", "fs/jfs/jfs_imap.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.12"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.12", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.323", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.285", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.227", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.168", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.113", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.54", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.10.13", "versionType": "semver", "lessThanOrEqual": "6.10.*"}, {"status": "unaffected", "version": "6.11.2", "versionType": "semver", "lessThanOrEqual": "6.11.*"}, {"status": "unaffected", "version": "6.12", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/jfs/jfs_dmap.c", "fs/jfs/jfs_imap.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d1017d2a0f3f16dc1db5120e7ddbe7c6680425b0"}, {"url": "https://git.kernel.org/stable/c/5ad6284c8d433f8a213111c5c44ead4d9705b622"}, {"url": "https://git.kernel.org/stable/c/0338e66cba272351ca9d7d03f3628e390e70963b"}, {"url": "https://git.kernel.org/stable/c/ead82533278502428883085a787d5a00f15e5eb9"}, {"url": "https://git.kernel.org/stable/c/6ce8b6ab44a8b5918c0ee373d4ad19d19017931b"}, {"url": "https://git.kernel.org/stable/c/c1ba4b8ca799ff1d99d01f37d7ccb7d5ba5533d2"}, {"url": "https://git.kernel.org/stable/c/128d5cfdcf844cb690c9295a3a1c1114c21fc15a"}, {"url": "https://git.kernel.org/stable/c/96855f40e152989c9e7c20c4691ace5581098acc"}, {"url": "https://git.kernel.org/stable/c/e63866a475562810500ea7f784099bfe341e761a"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix out-of-bounds in dbNextAG() and diAlloc()\n\nIn dbNextAG() , there is no check for the case where bmp->db_numag is\ngreater or same than MAXAG due to a polluted image, which causes an\nout-of-bounds. Therefore, a bounds check should be added in dbMount().\n\nAnd in dbNextAG(), a check for the case where agpref is greater than\nbmp->db_numag should be added, so an out-of-bounds exception should be\nprevented.\n\nAdditionally, a check for the case where agno is greater or same than\nMAXAG should be added in diAlloc() to prevent out-of-bounds."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.323", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.285", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.227", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.168", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.113", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.54", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.10.13", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11.2", "versionStartIncluding": "2.6.12"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12", "versionStartIncluding": "2.6.12"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:39:43.045Z"}}}, "cveMetadata": {"cveId": "CVE-2024-47723", "state": "PUBLISHED", "dateUpdated": "2026-10-15T00:52:41.617Z", "dateReserved": "2024-09-30T16:00:12.950Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-10-21T12:13:57.614Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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Therefore, a bounds check should be added in dbMount().\n\nAnd in dbNextAG(), a check for the case where agpref is greater than\nbmp->db_numag should be added, so an out-of-bounds exception should be\nprevented.\n\nAdditionally, a check for the case where agno is greater or same than\nMAXAG should be added in diAlloc() to prevent out-of-bounds."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: jfs: corregir fuera de los l\u00edmites en dbNextAG() y diAlloc() En dbNextAG(), no hay ninguna comprobaci\u00f3n para el caso en el que bmp->db_numag es mayor o igual que MAXAG debido a una imagen contaminada, lo que provoca un out-of-bounds. Por lo tanto, se debe agregar una comprobaci\u00f3n de los l\u00edmites en dbMount(). Y en dbNextAG(), se debe agregar una comprobaci\u00f3n para el caso en el que agpref es mayor que bmp->db_numag, por lo que se debe evitar una excepci\u00f3n fuera de los l\u00edmites. Adem\u00e1s, se debe agregar una comprobaci\u00f3n para el caso en el que agno es mayor o igual que MAXAG en diAlloc() para prevenir out-of-bounds."}], "id": "CVE-2024-47723", "lastModified": "2026-10-15T01:18:57.280", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-47723", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-21T13:01:38.378971Z", "version": "2.0.3"}}]}, "published": "2024-10-21T13:15:02.503", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0338e66cba272351ca9d7d03f3628e390e70963b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/128d5cfdcf844cb690c9295a3a1c1114c21fc15a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5ad6284c8d433f8a213111c5c44ead4d9705b622"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6ce8b6ab44a8b5918c0ee373d4ad19d19017931b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/96855f40e152989c9e7c20c4691ace5581098acc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c1ba4b8ca799ff1d99d01f37d7ccb7d5ba5533d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d1017d2a0f3f16dc1db5120e7ddbe7c6680425b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e63866a475562810500ea7f784099bfe341e761a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ead82533278502428883085a787d5a00f15e5eb9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: jfs: fix out-of-bounds in dbNextAG() and diAlloc()", "id": "2320224", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320224"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\njfs: fix out-of-bounds in dbNextAG() and diAlloc()\nIn dbNextAG() , there is no check for the case where bmp->db_numag is\ngreater or same than MAXAG due to a polluted image, which causes an\nout-of-bounds. Therefore, a bounds check should be added in dbMount().\nAnd in dbNextAG(), a check for the case where agpref is greater than\nbmp->db_numag should be added, so an out-of-bounds exception should be\nprevented.\nAdditionally, a check for the case where agno is greater or same than\nMAXAG should be added in diAlloc() to prevent out-of-bounds."], "name": "CVE-2024-47723", "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": "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": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-47723\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-47723\nhttps://lore.kernel.org/linux-cve-announce/2024102103-CVE-2024-47723-d904@gregkh/T"], "threat_severity": "Moderate"}

{}