{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-39745", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.120Z", "datePublished": "2025-09-11T16:52:18.423Z", "dateUpdated": "2026-05-11T21:35:27.553Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:35:27.553Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcutorture: Fix rcutorture_one_extend_check() splat in RT kernels\n\nFor built with CONFIG_PREEMPT_RT=y kernels, running rcutorture\ntests resulted in the following splat:\n\n[ 68.797425] rcutorture_one_extend_check during change: Current 0x1 To add 0x1 To remove 0x0 preempt_count() 0x0\n[ 68.797533] WARNING: CPU: 2 PID: 512 at kernel/rcu/rcutorture.c:1993 rcutorture_one_extend_check+0x419/0x560 [rcutorture]\n[ 68.797601] Call Trace:\n[ 68.797602] <TASK>\n[ 68.797619] ? lockdep_softirqs_off+0xa5/0x160\n[ 68.797631] rcutorture_one_extend+0x18e/0xcc0 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797646] ? local_clock+0x19/0x40\n[ 68.797659] rcu_torture_one_read+0xf0/0x280 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797678] ? __pfx_rcu_torture_one_read+0x10/0x10 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797804] ? __pfx_rcu_torture_timer+0x10/0x10 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797815] rcu-torture: rcu_torture_reader task started\n[ 68.797824] rcu-torture: Creating rcu_torture_reader task\n[ 68.797824] rcu_torture_reader+0x238/0x580 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797836] ? kvm_sched_clock_read+0x15/0x30\n\nDisable BH does not change the SOFTIRQ corresponding bits in\npreempt_count() for RT kernels, this commit therefore use\nsoftirq_count() to check the if BH is disabled."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/rcu/rcutorture.c"], "versions": [{"version": "ec9d6356bfda69abe5f4767dd56c964127913233", "lessThan": "a85550267247cdf5e7499be00ea8e388ab014e50", "status": "affected", "versionType": "git"}, {"version": "ec9d6356bfda69abe5f4767dd56c964127913233", "lessThan": "69c5ae0f441c2d72e8f48dc1e08464c172360c4c", "status": "affected", "versionType": "git"}, {"version": "ec9d6356bfda69abe5f4767dd56c964127913233", "lessThan": "8d71351d88e478d3c4e945e3218e97ec677fd807", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/rcu/rcutorture.c"], "versions": [{"version": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "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": "6.14", "versionEndExcluding": "6.15.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "6.16.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a85550267247cdf5e7499be00ea8e388ab014e50"}, {"url": "https://git.kernel.org/stable/c/69c5ae0f441c2d72e8f48dc1e08464c172360c4c"}, {"url": "https://git.kernel.org/stable/c/8d71351d88e478d3c4e945e3218e97ec677fd807"}], "title": "rcutorture: Fix rcutorture_one_extend_check() splat in RT kernels", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "44E4CD1D-57BE-444A-AC79-865DC927F496", "versionEndExcluding": "6.15.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BD7C087D-2415-4521-B624-30003352F899", "versionEndExcluding": "6.16.2", "versionStartIncluding": "6.16", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrcutorture: Fix rcutorture_one_extend_check() splat in RT kernels\n\nFor built with CONFIG_PREEMPT_RT=y kernels, running rcutorture\ntests resulted in the following splat:\n\n[ 68.797425] rcutorture_one_extend_check during change: Current 0x1 To add 0x1 To remove 0x0 preempt_count() 0x0\n[ 68.797533] WARNING: CPU: 2 PID: 512 at kernel/rcu/rcutorture.c:1993 rcutorture_one_extend_check+0x419/0x560 [rcutorture]\n[ 68.797601] Call Trace:\n[ 68.797602] <TASK>\n[ 68.797619] ? lockdep_softirqs_off+0xa5/0x160\n[ 68.797631] rcutorture_one_extend+0x18e/0xcc0 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797646] ? local_clock+0x19/0x40\n[ 68.797659] rcu_torture_one_read+0xf0/0x280 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797678] ? __pfx_rcu_torture_one_read+0x10/0x10 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797804] ? __pfx_rcu_torture_timer+0x10/0x10 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797815] rcu-torture: rcu_torture_reader task started\n[ 68.797824] rcu-torture: Creating rcu_torture_reader task\n[ 68.797824] rcu_torture_reader+0x238/0x580 [rcutorture 2466dbd2ff34dbaa36049cb323a80c3306ac997c]\n[ 68.797836] ? kvm_sched_clock_read+0x15/0x30\n\nDisable BH does not change the SOFTIRQ corresponding bits in\npreempt_count() for RT kernels, this commit therefore use\nsoftirq_count() to check the if BH is disabled."}], "id": "CVE-2025-39745", "lastModified": "2025-11-25T21:09:37.197", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-09-11T17:15:37.750", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/69c5ae0f441c2d72e8f48dc1e08464c172360c4c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8d71351d88e478d3c4e945e3218e97ec677fd807"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a85550267247cdf5e7499be00ea8e388ab014e50"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "rcutorture: Fix rcutorture_one_extend_check() splat in RT kernels", "id": "2394635", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2394635"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2025-39745", "public_date": "2025-09-11T16:52:18Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39745\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39745\nhttps://git.kernel.org/stable/c/69c5ae0f441c2d72e8f48dc1e08464c172360c4c\nhttps://git.kernel.org/stable/c/8d71351d88e478d3c4e945e3218e97ec677fd807\nhttps://git.kernel.org/stable/c/a85550267247cdf5e7499be00ea8e388ab014e50"]}

{"created": "2025-09-12T08:02:32.371059+00:00", "updated": "2025-09-12T08:02:32.371132+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}