{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-39782", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.130Z", "datePublished": "2025-09-11T16:56:32.616Z", "dateUpdated": "2026-07-14T12:42:51.947Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:36:10.976Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: prevent softlockup in jbd2_log_do_checkpoint()\n\nBoth jbd2_log_do_checkpoint() and jbd2_journal_shrink_checkpoint_list()\nperiodically release j_list_lock after processing a batch of buffers to\navoid long hold times on the j_list_lock. However, since both functions\ncontend for j_list_lock, the combined time spent waiting and processing\ncan be significant.\n\njbd2_journal_shrink_checkpoint_list() explicitly calls cond_resched() when\nneed_resched() is true to avoid softlockups during prolonged operations.\nBut jbd2_log_do_checkpoint() only exits its loop when need_resched() is\ntrue, relying on potentially sleeping functions like __flush_batch() or\nwait_on_buffer() to trigger rescheduling. If those functions do not sleep,\nthe kernel may hit a softlockup.\n\nwatchdog: BUG: soft lockup - CPU#3 stuck for 156s! [kworker/u129:2:373]\nCPU: 3 PID: 373 Comm: kworker/u129:2 Kdump: loaded Not tainted 6.6.0+ #10\nHardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.27 06/13/2017\nWorkqueue: writeback wb_workfn (flush-7:2)\npstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : native_queued_spin_lock_slowpath+0x358/0x418\nlr : jbd2_log_do_checkpoint+0x31c/0x438 [jbd2]\nCall trace:\n native_queued_spin_lock_slowpath+0x358/0x418\n jbd2_log_do_checkpoint+0x31c/0x438 [jbd2]\n __jbd2_log_wait_for_space+0xfc/0x2f8 [jbd2]\n add_transaction_credits+0x3bc/0x418 [jbd2]\n start_this_handle+0xf8/0x560 [jbd2]\n jbd2__journal_start+0x118/0x228 [jbd2]\n __ext4_journal_start_sb+0x110/0x188 [ext4]\n ext4_do_writepages+0x3dc/0x740 [ext4]\n ext4_writepages+0xa4/0x190 [ext4]\n do_writepages+0x94/0x228\n __writeback_single_inode+0x48/0x318\n writeback_sb_inodes+0x204/0x590\n __writeback_inodes_wb+0x54/0xf8\n wb_writeback+0x2cc/0x3d8\n wb_do_writeback+0x2e0/0x2f8\n wb_workfn+0x80/0x2a8\n process_one_work+0x178/0x3e8\n worker_thread+0x234/0x3b8\n kthread+0xf0/0x108\n ret_from_fork+0x10/0x20\n\nSo explicitly call cond_resched() in jbd2_log_do_checkpoint() to avoid\nsoftlockup." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/jbd2/checkpoint.c" ], "versions": [ { "version": "f93ea411b73594f7d144855fd34278bcf34a9afc", "lessThan": "f683d611518d30334813eecf9a8c687453e2800e", "status": "affected", "versionType": "git" }, { "version": "f93ea411b73594f7d144855fd34278bcf34a9afc", "lessThan": "f7ee8fd689e6d534f9fd2494b9266f7998082e65", "status": "affected", "versionType": "git" }, { "version": "f93ea411b73594f7d144855fd34278bcf34a9afc", "lessThan": "84ff98c1ea19acd3f9389e4bb6061364e943f85e", "status": "affected", "versionType": "git" }, { "version": "f93ea411b73594f7d144855fd34278bcf34a9afc", "lessThan": "26cb9aad94cb1811d8fae115594cc71fa3d91ab0", "status": "affected", "versionType": "git" }, { "version": "f93ea411b73594f7d144855fd34278bcf34a9afc", "lessThan": "41f40038de62e8306897cf6840791b268996432a", "status": "affected", "versionType": "git" }, { "version": "f93ea411b73594f7d144855fd34278bcf34a9afc", "lessThan": "429d50cbaff45090d52a1ea850d5de8c14881ee7", "status": "affected", "versionType": "git" }, { "version": "f93ea411b73594f7d144855fd34278bcf34a9afc", "lessThan": "3faac5e1d14c63260fd1bf789d96bde3ab3d9e54", "status": "affected", "versionType": "git" }, { "version": "f93ea411b73594f7d144855fd34278bcf34a9afc", "lessThan": "9d98cf4632258720f18265a058e62fde120c0151", "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/checkpoint.c" ], "versions": [ { "version": "2.6.16", "status": "affected" }, { "version": "0", "lessThan": "2.6.16", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.297", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.241", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.190", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.149", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.103", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.44", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16.4", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17", "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": "2.6.16", "versionEndExcluding": "5.4.297" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "5.10.241" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "5.15.190" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "6.1.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "6.6.103" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "6.12.44" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "6.16.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "6.17" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f683d611518d30334813eecf9a8c687453e2800e" }, { "url": "https://git.kernel.org/stable/c/f7ee8fd689e6d534f9fd2494b9266f7998082e65" }, { "url": "https://git.kernel.org/stable/c/84ff98c1ea19acd3f9389e4bb6061364e943f85e" }, { "url": "https://git.kernel.org/stable/c/26cb9aad94cb1811d8fae115594cc71fa3d91ab0" }, { "url": "https://git.kernel.org/stable/c/41f40038de62e8306897cf6840791b268996432a" }, { "url": "https://git.kernel.org/stable/c/429d50cbaff45090d52a1ea850d5de8c14881ee7" }, { "url": "https://git.kernel.org/stable/c/3faac5e1d14c63260fd1bf789d96bde3ab3d9e54" }, { "url": "https://git.kernel.org/stable/c/9d98cf4632258720f18265a058e62fde120c0151" } ], "title": "jbd2: prevent softlockup in jbd2_log_do_checkpoint()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:43:17.511Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-07-14T12:42:51.947Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC CN 4100", "versions": [ { "status": "affected", "version": "0", "lessThan": "V5.0", "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 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-032379.html" }, { "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html" } ] } ] } }