{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-39736", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.119Z", "datePublished": "2025-09-11T16:52:11.772Z", "dateUpdated": "2026-05-12T12:06:38.396Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:35:16.742Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock\n\nWhen netpoll is enabled, calling pr_warn_once() while holding\nkmemleak_lock in mem_pool_alloc() can cause a deadlock due to lock\ninversion with the netconsole subsystem. This occurs because\npr_warn_once() may trigger netpoll, which eventually leads to\n__alloc_skb() and back into kmemleak code, attempting to reacquire\nkmemleak_lock.\n\nThis is the path for the deadlock.\n\nmem_pool_alloc()\n -> raw_spin_lock_irqsave(&kmemleak_lock, flags);\n -> pr_warn_once()\n -> netconsole subsystem\n\t -> netpoll\n\t -> __alloc_skb\n\t\t -> __create_object\n\t\t -> raw_spin_lock_irqsave(&kmemleak_lock, flags);\n\nFix this by setting a flag and issuing the pr_warn_once() after\nkmemleak_lock is released." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "mm/kmemleak.c" ], "versions": [ { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "c7b6ea0ede687e7460e593c5ea478f50aa41682a", "status": "affected", "versionType": "git" }, { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "4b0151e1d468eb2667c37b7af99b3c075072d334", "status": "affected", "versionType": "git" }, { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "f249d32bb54876b4b6c3ae071af8ddca77af390b", "status": "affected", "versionType": "git" }, { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "62879faa8efe8d8a9c7bf7606ee9c068012d7dac", "status": "affected", "versionType": "git" }, { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "1da95d3d4b7b1d380ebd87b71a61e7e6aed3265d", "status": "affected", "versionType": "git" }, { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "a0854de00ce2ee27edf39037e7836ad580eb3350", "status": "affected", "versionType": "git" }, { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "08f70be5e406ce47c822f2dd11c1170ca259605b", "status": "affected", "versionType": "git" }, { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "a181b228b37a6a5625dad2bb4265bb7abb673e9f", "status": "affected", "versionType": "git" }, { "version": "c5665868183fec689dbab9fb8505188b2c4f0757", "lessThan": "47b0f6d8f0d2be4d311a49e13d2fd5f152f492b2", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "mm/kmemleak.c" ], "versions": [ { "version": "5.4", "status": "affected" }, { "version": "0", "lessThan": "5.4", "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": "6.12.43", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.11", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16.2", "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": "5.4", "versionEndExcluding": "5.4.297" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.10.241" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.15.190" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.1.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.6.103" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.12.43" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.15.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.16.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.17" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c7b6ea0ede687e7460e593c5ea478f50aa41682a" }, { "url": "https://git.kernel.org/stable/c/4b0151e1d468eb2667c37b7af99b3c075072d334" }, { "url": "https://git.kernel.org/stable/c/f249d32bb54876b4b6c3ae071af8ddca77af390b" }, { "url": "https://git.kernel.org/stable/c/62879faa8efe8d8a9c7bf7606ee9c068012d7dac" }, { "url": "https://git.kernel.org/stable/c/1da95d3d4b7b1d380ebd87b71a61e7e6aed3265d" }, { "url": "https://git.kernel.org/stable/c/a0854de00ce2ee27edf39037e7836ad580eb3350" }, { "url": "https://git.kernel.org/stable/c/08f70be5e406ce47c822f2dd11c1170ca259605b" }, { "url": "https://git.kernel.org/stable/c/a181b228b37a6a5625dad2bb4265bb7abb673e9f" }, { "url": "https://git.kernel.org/stable/c/47b0f6d8f0d2be4d311a49e13d2fd5f152f492b2" } ], "title": "mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock", "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": "2025-11-03T17:42:52.536Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T12:06:38.396Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC CN 4100", "versions": [ { "status": "affected", "version": "0", "lessThan": "V5.0", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html" } ] } ] } }