{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38037", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.978Z", "datePublished": "2025-06-18T09:33:23.551Z", "dateUpdated": "2025-11-03T17:33:16.449Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-07-15T15:43:54.094Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: Annotate FDB data races\n\nThe 'used' and 'updated' fields in the FDB entry structure can be\naccessed concurrently by multiple threads, leading to reports such as\n[1]. Can be reproduced using [2].\n\nSuppress these reports by annotating these accesses using\nREAD_ONCE() / WRITE_ONCE().\n\n[1]\nBUG: KCSAN: data-race in vxlan_xmit / vxlan_xmit\n\nwrite to 0xffff942604d263a8 of 8 bytes by task 286 on cpu 0:\n vxlan_xmit+0xb29/0x2380\n dev_hard_start_xmit+0x84/0x2f0\n __dev_queue_xmit+0x45a/0x1650\n packet_xmit+0x100/0x150\n packet_sendmsg+0x2114/0x2ac0\n __sys_sendto+0x318/0x330\n __x64_sys_sendto+0x76/0x90\n x64_sys_call+0x14e8/0x1c00\n do_syscall_64+0x9e/0x1a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nread to 0xffff942604d263a8 of 8 bytes by task 287 on cpu 2:\n vxlan_xmit+0xadf/0x2380\n dev_hard_start_xmit+0x84/0x2f0\n __dev_queue_xmit+0x45a/0x1650\n packet_xmit+0x100/0x150\n packet_sendmsg+0x2114/0x2ac0\n __sys_sendto+0x318/0x330\n __x64_sys_sendto+0x76/0x90\n x64_sys_call+0x14e8/0x1c00\n do_syscall_64+0x9e/0x1a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nvalue changed: 0x00000000fffbac6e -> 0x00000000fffbac6f\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 2 UID: 0 PID: 287 Comm: mausezahn Not tainted 6.13.0-rc7-01544-gb4b270f11a02 #5\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014\n\n[2]\n #!/bin/bash\n\n set +H\n echo whitelist > /sys/kernel/debug/kcsan\n echo !vxlan_xmit > /sys/kernel/debug/kcsan\n\n ip link add name vx0 up type vxlan id 10010 dstport 4789 local 192.0.2.1\n bridge fdb add 00:11:22:33:44:55 dev vx0 self static dst 198.51.100.1\n taskset -c 0 mausezahn vx0 -a own -b 00:11:22:33:44:55 -c 0 -q &\n taskset -c 2 mausezahn vx0 -a own -b 00:11:22:33:44:55 -c 0 -q &"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/vxlan/vxlan_core.c"], "versions": [{"version": "d342894c5d2f8c7df194c793ec4059656e09ca31", "lessThan": "02a33b1035a307453a1da6ce0a1bf3676be287d7", "status": "affected", "versionType": "git"}, {"version": "d342894c5d2f8c7df194c793ec4059656e09ca31", "lessThan": "87d076987a9ba106c83412fcd113656f71af05a1", "status": "affected", "versionType": "git"}, {"version": "d342894c5d2f8c7df194c793ec4059656e09ca31", "lessThan": "e033da39fc6abbddab6c29624acef80757f273fa", "status": "affected", "versionType": "git"}, {"version": "d342894c5d2f8c7df194c793ec4059656e09ca31", "lessThan": "784b78295a3a58bf052339dd669e6e03710220d3", "status": "affected", "versionType": "git"}, {"version": "d342894c5d2f8c7df194c793ec4059656e09ca31", "lessThan": "13cba3f837903f7184d6e9b6137d5165ffe82a8f", "status": "affected", "versionType": "git"}, {"version": "d342894c5d2f8c7df194c793ec4059656e09ca31", "lessThan": "a6644aeb8ddf196dec5f8e782293c36f065df4d7", "status": "affected", "versionType": "git"}, {"version": "d342894c5d2f8c7df194c793ec4059656e09ca31", "lessThan": "4eceb7eae6ea7c950384c34e6dbbe872c981935f", "status": "affected", "versionType": "git"}, {"version": "d342894c5d2f8c7df194c793ec4059656e09ca31", "lessThan": "f6205f8215f12a96518ac9469ff76294ae7bd612", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/vxlan/vxlan_core.c"], "versions": [{"version": "3.7", "status": "affected"}, {"version": "0", "lessThan": "3.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.294", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.238", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.185", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.141", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.93", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.31", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.9", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15", "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": "3.7", "versionEndExcluding": "5.4.294"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.10.238"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.15.185"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.1.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.6.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.12.31"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.14.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/02a33b1035a307453a1da6ce0a1bf3676be287d7"}, {"url": "https://git.kernel.org/stable/c/87d076987a9ba106c83412fcd113656f71af05a1"}, {"url": "https://git.kernel.org/stable/c/e033da39fc6abbddab6c29624acef80757f273fa"}, {"url": "https://git.kernel.org/stable/c/784b78295a3a58bf052339dd669e6e03710220d3"}, {"url": "https://git.kernel.org/stable/c/13cba3f837903f7184d6e9b6137d5165ffe82a8f"}, {"url": "https://git.kernel.org/stable/c/a6644aeb8ddf196dec5f8e782293c36f065df4d7"}, {"url": "https://git.kernel.org/stable/c/4eceb7eae6ea7c950384c34e6dbbe872c981935f"}, {"url": "https://git.kernel.org/stable/c/f6205f8215f12a96518ac9469ff76294ae7bd612"}], "title": "vxlan: Annotate FDB data races", "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": "2025-11-03T17:33:16.449Z"}}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D5472512-F3A1-4BB5-92C2-E32A9AD7740F", "versionEndExcluding": "5.4.294", "versionStartIncluding": "3.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0DAAEF7F-D560-47FC-8B65-20404DB82432", "versionEndExcluding": "5.10.238", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E11820B2-24BD-40A8-9E6B-5BC447252321", "versionEndExcluding": "5.15.185", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7CEA8241-A858-4009-B4EE-31C62772811A", "versionEndExcluding": "6.1.141", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "50A4A9DE-24AB-4FB4-AACD-85D8EABB0571", "versionEndExcluding": "6.6.93", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1AE98841-5774-4B45-A81C-2D188DB7E5C3", "versionEndExcluding": "6.12.31", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A9B72DD1-715C-4101-A720-1C8D70044C06", "versionEndExcluding": "6.14.9", "versionStartIncluding": "6.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: Annotate FDB data races\n\nThe 'used' and 'updated' fields in the FDB entry structure can be\naccessed concurrently by multiple threads, leading to reports such as\n[1]. Can be reproduced using [2].\n\nSuppress these reports by annotating these accesses using\nREAD_ONCE() / WRITE_ONCE().\n\n[1]\nBUG: KCSAN: data-race in vxlan_xmit / vxlan_xmit\n\nwrite to 0xffff942604d263a8 of 8 bytes by task 286 on cpu 0:\n vxlan_xmit+0xb29/0x2380\n dev_hard_start_xmit+0x84/0x2f0\n __dev_queue_xmit+0x45a/0x1650\n packet_xmit+0x100/0x150\n packet_sendmsg+0x2114/0x2ac0\n __sys_sendto+0x318/0x330\n __x64_sys_sendto+0x76/0x90\n x64_sys_call+0x14e8/0x1c00\n do_syscall_64+0x9e/0x1a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nread to 0xffff942604d263a8 of 8 bytes by task 287 on cpu 2:\n vxlan_xmit+0xadf/0x2380\n dev_hard_start_xmit+0x84/0x2f0\n __dev_queue_xmit+0x45a/0x1650\n packet_xmit+0x100/0x150\n packet_sendmsg+0x2114/0x2ac0\n __sys_sendto+0x318/0x330\n __x64_sys_sendto+0x76/0x90\n x64_sys_call+0x14e8/0x1c00\n do_syscall_64+0x9e/0x1a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nvalue changed: 0x00000000fffbac6e -> 0x00000000fffbac6f\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 2 UID: 0 PID: 287 Comm: mausezahn Not tainted 6.13.0-rc7-01544-gb4b270f11a02 #5\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014\n\n[2]\n #!/bin/bash\n\n set +H\n echo whitelist > /sys/kernel/debug/kcsan\n echo !vxlan_xmit > /sys/kernel/debug/kcsan\n\n ip link add name vx0 up type vxlan id 10010 dstport 4789 local 192.0.2.1\n bridge fdb add 00:11:22:33:44:55 dev vx0 self static dst 198.51.100.1\n taskset -c 0 mausezahn vx0 -a own -b 00:11:22:33:44:55 -c 0 -q &\n taskset -c 2 mausezahn vx0 -a own -b 00:11:22:33:44:55 -c 0 -q &"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vxlan: Anotaci\u00f3n de ejecuciones de datos FDB. M\u00faltiples subprocesos pueden acceder simult\u00e1neamente a los campos \"usado\" y \"actualizado\" de la estructura de entrada FDB, lo que genera informes como [1]. Se puede reproducir con [2]. Para suprimir estos informes, anote estos accesos con READ_ONCE() / WRITE_ONCE(). [1] ERROR: KCSAN: ejecuci\u00f3n de datos en vxlan_xmit / vxlan_xmit escribe en 0xffff942604d263a8 de 8 bytes por la tarea 286 en la CPU 0: vxlan_xmit+0xb29/0x2380 dev_hard_start_xmit+0x84/0x2f0 __dev_queue_xmit+0x45a/0x1650 packet_xmit+0x100/0x150 packet_sendmsg+0x2114/0x2ac0 __sys_sendto+0x318/0x330 __x64_sys_sendto+0x76/0x90 x64_sys_call+0x14e8/0x1c00 do_syscall_64+0x9e/0x1a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f lectura a 0xffff942604d263a8 de 8 bytes por la tarea 287 en la CPU 2: vxlan_xmit+0xadf/0x2380 dev_hard_start_xmit+0x84/0x2f0 __dev_queue_xmit+0x45a/0x1650 packet_xmit+0x100/0x150 packet_sendmsg+0x2114/0x2ac0 __sys_sendto+0x318/0x330 __x64_sys_sendto+0x76/0x90 x64_sys_call+0x14e8/0x1c00 do_syscall_64+0x9e/0x1a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f valor cambiado: 0x00000000fffbac6e -> 0x00000000fffbac6f Informado por Kernel Concurrency Sanitizer en: CPU: 2 UID: 0 PID: 287 Comm: mausezahn No contaminado 6.13.0-rc7-01544-gb4b270f11a02 #5 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 01/04/2014 [2] #!/bin/bash set +H echo whitelist > /sys/kernel/debug/kcsan echo !vxlan_xmit > /sys/kernel/debug/kcsan ip enlace agregar nombre vx0 activo tipo vxlan id 10010 dstport 4789 local 192.0.2.1 puente fdb agregar 00:11:22:33:44:55 dev vx0 self static dst 198.51.100.1 conjunto de tareas -c 0 mausezahn vx0 -a propio -b 00:11:22:33:44:55 -c 0 -q & conjunto de tareas -c 2 mausezahn vx0 -a propio -b 00:11:22:33:44:55 -c 0 -q &"}], "id": "CVE-2025-38037", "lastModified": "2025-12-18T21:36:09.150", "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": "2025-06-18T10:15:36.030", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/02a33b1035a307453a1da6ce0a1bf3676be287d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/13cba3f837903f7184d6e9b6137d5165ffe82a8f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4eceb7eae6ea7c950384c34e6dbbe872c981935f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/784b78295a3a58bf052339dd669e6e03710220d3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/87d076987a9ba106c83412fcd113656f71af05a1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a6644aeb8ddf196dec5f8e782293c36f065df4d7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e033da39fc6abbddab6c29624acef80757f273fa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f6205f8215f12a96518ac9469ff76294ae7bd612"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: vxlan: Annotate FDB data races", "id": "2373361", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373361"}, "csaw": false, "cvss3": {"cvss3_base_score": "1.9", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nvxlan: Annotate FDB data races\nThe 'used' and 'updated' fields in the FDB entry structure can be\naccessed concurrently by multiple threads, leading to reports such as\n[1]. Can be reproduced using [2].\nSuppress these reports by annotating these accesses using\nREAD_ONCE() / WRITE_ONCE().\n[1]\nBUG: KCSAN: data-race in vxlan_xmit / vxlan_xmit\nwrite to 0xffff942604d263a8 of 8 bytes by task 286 on cpu 0:\nvxlan_xmit+0xb29/0x2380\ndev_hard_start_xmit+0x84/0x2f0\n__dev_queue_xmit+0x45a/0x1650\npacket_xmit+0x100/0x150\npacket_sendmsg+0x2114/0x2ac0\n__sys_sendto+0x318/0x330\n__x64_sys_sendto+0x76/0x90\nx64_sys_call+0x14e8/0x1c00\ndo_syscall_64+0x9e/0x1a0\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nread to 0xffff942604d263a8 of 8 bytes by task 287 on cpu 2:\nvxlan_xmit+0xadf/0x2380\ndev_hard_start_xmit+0x84/0x2f0\n__dev_queue_xmit+0x45a/0x1650\npacket_xmit+0x100/0x150\npacket_sendmsg+0x2114/0x2ac0\n__sys_sendto+0x318/0x330\n__x64_sys_sendto+0x76/0x90\nx64_sys_call+0x14e8/0x1c00\ndo_syscall_64+0x9e/0x1a0\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nvalue changed: 0x00000000fffbac6e -> 0x00000000fffbac6f\nReported by Kernel Concurrency Sanitizer on:\nCPU: 2 UID: 0 PID: 287 Comm: mausezahn Not tainted 6.13.0-rc7-01544-gb4b270f11a02 #5\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014\n[2]\n#!/bin/bash\nset +H\necho whitelist > /sys/kernel/debug/kcsan\necho !vxlan_xmit > /sys/kernel/debug/kcsan\nip link add name vx0 up type vxlan id 10010 dstport 4789 local 192.0.2.1\nbridge fdb add 00:11:22:33:44:55 dev vx0 self static dst 198.51.100.1\ntaskset -c 0 mausezahn vx0 -a own -b 00:11:22:33:44:55 -c 0 -q &\ntaskset -c 2 mausezahn vx0 -a own -b 00:11:22:33:44:55 -c 0 -q &"], "name": "CVE-2025-38037", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38037\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38037\nhttps://lore.kernel.org/linux-cve-announce/2025061827-CVE-2025-38037-afa7@gregkh/T"], "statement": "This patch addresses a benign data race in the VXLAN FDB handling code, where the used and updated timestamps were concurrently accessed by multiple threads. Although not security-critical, it caused KCSAN to report a potential race condition during VXLAN traffic handling. The fix involves annotating accesses to these fields with READ_ONCE() and WRITE_ONCE() to clarify the intended relaxed access pattern and suppress false positives.", "threat_severity": "Low"}