CVE-2025-38230 (GCVE-0-2025-38230)

Vulnerability from cvelistv5 – Published: 2025-07-04 13:37 – Updated: 2025-11-03 17:35
VLAI?
Title
jfs: validate AG parameters in dbMount() to prevent crashes
Summary
In the Linux kernel, the following vulnerability has been resolved: jfs: validate AG parameters in dbMount() to prevent crashes Validate db_agheight, db_agwidth, and db_agstart in dbMount to catch corrupted metadata early and avoid undefined behavior in dbAllocAG. Limits are derived from L2LPERCTL, LPERCTL/MAXAG, and CTLTREESIZE: - agheight: 0 to L2LPERCTL/2 (0 to 5) ensures shift (L2LPERCTL - 2*agheight) >= 0. - agwidth: 1 to min(LPERCTL/MAXAG, 2^(L2LPERCTL - 2*agheight)) ensures agperlev >= 1. - Ranges: 1-8 (agheight 0-3), 1-4 (agheight 4), 1 (agheight 5). - LPERCTL/MAXAG = 1024/128 = 8 limits leaves per AG; 2^(10 - 2*agheight) prevents division to 0. - agstart: 0 to CTLTREESIZE-1 - agwidth*(MAXAG-1) keeps ti within stree (size 1365). - Ranges: 0-1237 (agwidth 1), 0-348 (agwidth 8). UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:1400:9 shift exponent -335544310 is negative CPU: 0 UID: 0 PID: 5822 Comm: syz-executor130 Not tainted 6.14.0-rc5-syzkaller #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468 dbAllocAG+0x1087/0x10b0 fs/jfs/jfs_dmap.c:1400 dbDiscardAG+0x352/0xa20 fs/jfs/jfs_dmap.c:1613 jfs_ioc_trim+0x45a/0x6b0 fs/jfs/jfs_discard.c:105 jfs_ioctl+0x2cd/0x3e0 fs/jfs/ioctl.c:131 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 95ae5ee6069d9a5945772625f289422ef659221a (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a4259e72363e1ea204a97292001a9fc36c7e52fd (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c3705c82b7406a15ef38a610d03bf6baa43d6e0c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9242ff6245527a3ebb693ddd175493b38ddca72f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0c40fa81f850556e9aa0185fede9ef1112db7b39 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8b69608c6b6779a7ab07ce4467a56df90152cfb9 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b62a1e59d8716bbd2e73660743fe06acc97ed7d1 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 37bfb464ddca87f203071b5bd562cd91ddc0b40a (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.4.296 , ≤ 5.4.* (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.187 , ≤ 5.15.* (semver)
Unaffected: 6.1.143 , ≤ 6.1.* (semver)
Unaffected: 6.6.96 , ≤ 6.6.* (semver)
Unaffected: 6.12.36 , ≤ 6.12.* (semver)
Unaffected: 6.15.4 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: validate AG parameters in dbMount() to prevent crashes\n\nValidate db_agheight, db_agwidth, and db_agstart in dbMount to catch\ncorrupted metadata early and avoid undefined behavior in dbAllocAG.\nLimits are derived from L2LPERCTL, LPERCTL/MAXAG, and CTLTREESIZE:\n\n- agheight: 0 to L2LPERCTL/2 (0 to 5) ensures shift\n  (L2LPERCTL - 2*agheight) \u003e= 0.\n- agwidth: 1 to min(LPERCTL/MAXAG, 2^(L2LPERCTL - 2*agheight))\n  ensures agperlev \u003e= 1.\n  - Ranges: 1-8 (agheight 0-3), 1-4 (agheight 4), 1 (agheight 5).\n  - LPERCTL/MAXAG = 1024/128 = 8 limits leaves per AG;\n    2^(10 - 2*agheight) prevents division to 0.\n- agstart: 0 to CTLTREESIZE-1 - agwidth*(MAXAG-1) keeps ti within\n  stree (size 1365).\n  - Ranges: 0-1237 (agwidth 1), 0-348 (agwidth 8).\n\nUBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:1400:9\nshift exponent -335544310 is negative\nCPU: 0 UID: 0 PID: 5822 Comm: syz-executor130 Not tainted 6.14.0-rc5-syzkaller #0\nHardware name: Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n ubsan_epilogue lib/ubsan.c:231 [inline]\n __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468\n dbAllocAG+0x1087/0x10b0 fs/jfs/jfs_dmap.c:1400\n dbDiscardAG+0x352/0xa20 fs/jfs/jfs_dmap.c:1613\n jfs_ioc_trim+0x45a/0x6b0 fs/jfs/jfs_discard.c:105\n jfs_ioctl+0x2cd/0x3e0 fs/jfs/ioctl.c:131\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:906 [inline]\n __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
        }
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        "dateUpdated": "2025-07-28T04:15:45.097Z",
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      "title": "jfs: validate AG parameters in dbMount() to prevent crashes",
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    "datePublished": "2025-07-04T13:37:44.264Z",
    "dateReserved": "2025-04-16T04:51:23.996Z",
    "dateUpdated": "2025-11-03T17:35:48.634Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38230\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-04T14:15:32.550\",\"lastModified\":\"2025-12-18T19:31:41.650\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\njfs: validate AG parameters in dbMount() to prevent crashes\\n\\nValidate db_agheight, db_agwidth, and db_agstart in dbMount to catch\\ncorrupted metadata early and avoid undefined behavior in dbAllocAG.\\nLimits are derived from L2LPERCTL, LPERCTL/MAXAG, and CTLTREESIZE:\\n\\n- agheight: 0 to L2LPERCTL/2 (0 to 5) ensures shift\\n  (L2LPERCTL - 2*agheight) \u003e= 0.\\n- agwidth: 1 to min(LPERCTL/MAXAG, 2^(L2LPERCTL - 2*agheight))\\n  ensures agperlev \u003e= 1.\\n  - Ranges: 1-8 (agheight 0-3), 1-4 (agheight 4), 1 (agheight 5).\\n  - LPERCTL/MAXAG = 1024/128 = 8 limits leaves per AG;\\n    2^(10 - 2*agheight) prevents division to 0.\\n- agstart: 0 to CTLTREESIZE-1 - agwidth*(MAXAG-1) keeps ti within\\n  stree (size 1365).\\n  - Ranges: 0-1237 (agwidth 1), 0-348 (agwidth 8).\\n\\nUBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:1400:9\\nshift exponent -335544310 is negative\\nCPU: 0 UID: 0 PID: 5822 Comm: syz-executor130 Not tainted 6.14.0-rc5-syzkaller #0\\nHardware name: Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:94 [inline]\\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\\n ubsan_epilogue lib/ubsan.c:231 [inline]\\n __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468\\n dbAllocAG+0x1087/0x10b0 fs/jfs/jfs_dmap.c:1400\\n dbDiscardAG+0x352/0xa20 fs/jfs/jfs_dmap.c:1613\\n jfs_ioc_trim+0x45a/0x6b0 fs/jfs/jfs_discard.c:105\\n jfs_ioctl+0x2cd/0x3e0 fs/jfs/ioctl.c:131\\n vfs_ioctl fs/ioctl.c:51 [inline]\\n __do_sys_ioctl fs/ioctl.c:906 [inline]\\n __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: jfs: validar par\u00e1metros AG en dbMount() para evitar fallos Validar db_agheight, db_agwidth y db_agstart en dbMount para detectar metadatos da\u00f1ados de forma temprana y evitar un comportamiento indefinido en dbAllocAG. Los l\u00edmites se derivan de L2LPERCTL, LPERCTL/MAXAG y CTLTREESIZE: - agheight: 0 a L2LPERCTL/2 (0 a 5) garantiza un desplazamiento (L2LPERCTL - 2*agheight) \u0026gt;= 0. - agwidth: 1 a min(LPERCTL/MAXAG, 2^(L2LPERCTL - 2*agheight)) garantiza un agperlev \u0026gt;= 1. - Rangos: 1-8 (agheight 0-3), 1-4 (agheight 4), 1 (agheight 5). - LPERCTL/MAXAG = 1024/128 = 8 limita las hojas por AG; 2^(10 - 2*agheight) evita la divisi\u00f3n a 0. - agstart: 0 a CTLTREESIZE-1 - agwidth*(MAXAG-1) mantiene ti dentro de stree (tama\u00f1o 1365). - Rangos: 0-1237 (agwidth 1), 0-348 (agwidth 8). UBSAN: cambio fuera de l\u00edmites en fs/jfs/jfs_dmap.c:1400:9 el exponente de cambio -335544310 es negativo CPU: 0 UID: 0 PID: 5822 Comm: syz-executor130 No contaminado 6.14.0-rc5-syzkaller #0 Nombre del hardware: Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468 dbAllocAG+0x1087/0x10b0 fs/jfs/jfs_dmap.c:1400 dbDiscardAG+0x352/0xa20 fs/jfs/jfs_dmap.c:1613 jfs_ioc_trim+0x45a/0x6b0 fs/jfs/jfs_discard.c:105 jfs_ioctl+0x2cd/0x3e0 fs/jfs/ioctl.c:131 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Encontrado por el Centro de verificaci\u00f3n de Linux (linuxtesting.org) con Syzkaller.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.13\",\"versionEndExcluding\":\"5.4.296\",\"matchCriteriaId\":\"4FB4C5CA-BF3E-41D0-9451-C110FB7E62C6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.240\",\"matchCriteriaId\":\"0E73A49A-F9B2-470F-91B2-6FAB6239BDB6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.187\",\"matchCriteriaId\":\"4BD28D29-423C-4173-9DB8-3BA14E9F665D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.143\",\"matchCriteriaId\":\"FC77EF56-FA90-40B6-AF3C-9BBE6D4BEAD8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.96\",\"matchCriteriaId\":\"6AB3EB1A-48DE-47F4-9202-D0C58A0F6060\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.36\",\"matchCriteriaId\":\"2BD88DEC-018F-4F40-8E29-A2CA89813EBA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.15.4\",\"matchCriteriaId\":\"DFD174C5-1AA2-4671-BDDC-1A9FCC753655\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"6F62EECE-8FB1-4D57-85D8-CB9E23CF313C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4F76C298-81DC-43E4-8FC9-DC005A2116EF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"0AB349B2-3F78-4197-882B-90ADB3BF645A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"6AC88830-A9BC-4607-B572-A4B502FC9FD0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"476CB3A5-D022-4F13-AAEF-CB6A5785516A\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c40fa81f850556e9aa0185fede9ef1112db7b39\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/37bfb464ddca87f203071b5bd562cd91ddc0b40a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8b69608c6b6779a7ab07ce4467a56df90152cfb9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9242ff6245527a3ebb693ddd175493b38ddca72f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/95ae5ee6069d9a5945772625f289422ef659221a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a4259e72363e1ea204a97292001a9fc36c7e52fd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b62a1e59d8716bbd2e73660743fe06acc97ed7d1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c3705c82b7406a15ef38a610d03bf6baa43d6e0c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"Mailing List\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"Mailing List\"]}]}}"
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.