{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-68337", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-16T14:48:05.297Z", "datePublished": "2025-12-22T16:14:14.145Z", "dateUpdated": "2026-08-05T12:10:55.345Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:10:55.345Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: avoid bug_on in jbd2_journal_get_create_access() when file system corrupted\n\nThere's issue when file system corrupted:\n------------[ cut here ]------------\nkernel BUG at fs/jbd2/transaction.c:1289!\nOops: invalid opcode: 0000 [#1] SMP KASAN PTI\nCPU: 5 UID: 0 PID: 2031 Comm: mkdir Not tainted 6.18.0-rc1-next\nRIP: 0010:jbd2_journal_get_create_access+0x3b6/0x4d0\nRSP: 0018:ffff888117aafa30 EFLAGS: 00010202\nRAX: 0000000000000000 RBX: ffff88811a86b000 RCX: ffffffff89a63534\nRDX: 1ffff110200ec602 RSI: 0000000000000004 RDI: ffff888100763010\nRBP: ffff888100763000 R08: 0000000000000001 R09: ffff888100763028\nR10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000\nR13: ffff88812c432000 R14: ffff88812c608000 R15: ffff888120bfc000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f91d6970c99 CR3: 00000001159c4000 CR4: 00000000000006f0\nCall Trace:\n \n __ext4_journal_get_create_access+0x42/0x170\n ext4_getblk+0x319/0x6f0\n ext4_bread+0x11/0x100\n ext4_append+0x1e6/0x4a0\n ext4_init_new_dir+0x145/0x1d0\n ext4_mkdir+0x326/0x920\n vfs_mkdir+0x45c/0x740\n do_mkdirat+0x234/0x2f0\n __x64_sys_mkdir+0xd6/0x120\n do_syscall_64+0x5f/0xfa0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThe above issue occurs with us in errors=continue mode when accompanied by\nstorage failures. There have been many inconsistencies in the file system\ndata.\nIn the case of file system data inconsistency, for example, if the block\nbitmap of a referenced block is not set, it can lead to the situation where\na block being committed is allocated and used again. As a result, the\nfollowing condition will not be satisfied then trigger BUG_ON. Of course,\nit is entirely possible to construct a problematic image that can trigger\nthis BUG_ON through specific operations. In fact, I have constructed such\nan image and easily reproduced this issue.\nTherefore, J_ASSERT() holds true only under ideal conditions, but it may\nnot necessarily be satisfied in exceptional scenarios. Using J_ASSERT()\ndirectly in abnormal situations would cause the system to crash, which is\nclearly not what we want. So here we directly trigger a JBD abort instead\nof immediately invoking BUG_ON." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - A remote client can reach the vulnerable path through a guest-writable ksmbd share or permissive NFS export backed by corrupted ext4; SMB/NFS directory creation ultimately invokes ext4_mkdir().\nAC:L - Once the bitmap/journal inconsistency exists, directory creation deterministically reaches the assertion, and the commit author reports easily reproducing it with a constructed image.\nPR:N - A guest-writable SMB share or permissive NFS export can require no credentials, while the underlying mkdir path requires only directory write and search permission without capabilities.\nUI:N - The attacker directly issues the directory-creation request against an already-mounted filesystem, requiring no victim action during exploitation.\nS:U - The failure remains within the host kernel and filesystem security authority and does not cross a virtualization or sandbox boundary.\nC:N - The failed JBD2 invariant immediately executes BUG_ON without exposing memory or providing an out-of-bounds read primitive.\nI:N - The defect is an assertion-triggered crash, not memory corruption, and it provides no attacker-controlled write or code-execution primitive.\nA:H - BUG_ON raises an invalid-opcode kernel oops and can panic or reboot the system; the request can be repeated while the corrupted filesystem state persists." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/jbd2/transaction.c" ], "versions": [ { "version": "470decc613ab2048b619a01028072d932d9086ee", "lessThan": "71bbe06c40fc59b5b15661eca8ff307f4176d7f9", "status": "affected", "versionType": "git" }, { "version": "470decc613ab2048b619a01028072d932d9086ee", "lessThan": "ed62fd8c15d41c4127ad16b8219b63124f5962bc", "status": "affected", "versionType": "git" }, { "version": "470decc613ab2048b619a01028072d932d9086ee", "lessThan": "3faac6531d4818cd6be45e5bbf32937bbbc795c0", "status": "affected", "versionType": "git" }, { "version": "470decc613ab2048b619a01028072d932d9086ee", "lessThan": "b4f8eabf6d991bd41fabcdf9302c4b3eab590cf4", "status": "affected", "versionType": "git" }, { "version": "470decc613ab2048b619a01028072d932d9086ee", "lessThan": "a2a7f854d154a3e9232fec80782dad951655f52f", "status": "affected", "versionType": "git" }, { "version": "470decc613ab2048b619a01028072d932d9086ee", "lessThan": "bf34c72337e40c4670cceeb79b353356933a254b", "status": "affected", "versionType": "git" }, { "version": "470decc613ab2048b619a01028072d932d9086ee", "lessThan": "aa1703f3f706ea0867fb1991dcac709c9ec94cfb", "status": "affected", "versionType": "git" }, { "version": "470decc613ab2048b619a01028072d932d9086ee", "lessThan": "986835bf4d11032bba4ab8414d18fce038c61bb4", "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/jbd2/transaction.c" ], "versions": [ { "version": "2.6.19", "status": "affected" }, { "version": "0", "lessThan": "2.6.19", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.248", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.198", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.160", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.120", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.62", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.12", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.1", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19", "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": "2.6.19", "versionEndExcluding": "5.10.248" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.15.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.1.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.6.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.12.62" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.17.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.18.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/71bbe06c40fc59b5b15661eca8ff307f4176d7f9" }, { "url": "https://git.kernel.org/stable/c/ed62fd8c15d41c4127ad16b8219b63124f5962bc" }, { "url": "https://git.kernel.org/stable/c/3faac6531d4818cd6be45e5bbf32937bbbc795c0" }, { "url": "https://git.kernel.org/stable/c/b4f8eabf6d991bd41fabcdf9302c4b3eab590cf4" }, { "url": "https://git.kernel.org/stable/c/a2a7f854d154a3e9232fec80782dad951655f52f" }, { "url": "https://git.kernel.org/stable/c/bf34c72337e40c4670cceeb79b353356933a254b" }, { "url": "https://git.kernel.org/stable/c/aa1703f3f706ea0867fb1991dcac709c9ec94cfb" }, { "url": "https://git.kernel.org/stable/c/986835bf4d11032bba4ab8414d18fce038c61bb4" } ], "title": "jbd2: avoid bug_on in jbd2_journal_get_create_access() when file system corrupted", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-16T16:56:17.316148Z", "id": "CVE-2025-68337", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-16T16:56:28.626Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-07-14T12:44:01.393Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html" } ] } ] } }