{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-23120", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.970Z", "datePublished": "2026-02-14T15:09:51.223Z", "dateUpdated": "2026-06-11T18:44:15.028Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T16:03:54.143Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nl2tp: avoid one data-race in l2tp_tunnel_del_work()\n\nWe should read sk->sk_socket only when dealing with kernel sockets.\n\nsyzbot reported the following data-race:\n\nBUG: KCSAN: data-race in l2tp_tunnel_del_work / sk_common_release\n\nwrite to 0xffff88811c182b20 of 8 bytes by task 5365 on cpu 0:\n sk_set_socket include/net/sock.h:2092 [inline]\n sock_orphan include/net/sock.h:2118 [inline]\n sk_common_release+0xae/0x230 net/core/sock.c:4003\n udp_lib_close+0x15/0x20 include/net/udp.h:325\n inet_release+0xce/0xf0 net/ipv4/af_inet.c:437\n __sock_release net/socket.c:662 [inline]\n sock_close+0x6b/0x150 net/socket.c:1455\n __fput+0x29b/0x650 fs/file_table.c:468\n ____fput+0x1c/0x30 fs/file_table.c:496\n task_work_run+0x131/0x1a0 kernel/task_work.c:233\n resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]\n __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]\n exit_to_user_mode_loop+0x1fe/0x740 kernel/entry/common.c:75\n __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]\n syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]\n syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]\n syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]\n do_syscall_64+0x1e1/0x2b0 arch/x86/entry/syscall_64.c:100\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nread to 0xffff88811c182b20 of 8 bytes by task 827 on cpu 1:\n l2tp_tunnel_del_work+0x2f/0x1a0 net/l2tp/l2tp_core.c:1418\n process_one_work kernel/workqueue.c:3257 [inline]\n process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340\n worker_thread+0x582/0x770 kernel/workqueue.c:3421\n kthread+0x489/0x510 kernel/kthread.c:463\n ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246\n\nvalue changed: 0xffff88811b818000 -> 0x0000000000000000" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/l2tp/l2tp_core.c" ], "versions": [ { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "lessThan": "1f63ca44b4f419a1663d94d1bb0b4e2beb73fdb4", "status": "affected", "versionType": "git" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "lessThan": "36c40a80109f1771d59558050b1a71e13c60c759", "status": "affected", "versionType": "git" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "lessThan": "eae074dab764ea181bbed5e88626889319177498", "status": "affected", "versionType": "git" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "lessThan": "68e92085427c84e7679ddb53c0d68836d220b6e7", "status": "affected", "versionType": "git" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "lessThan": "3d6d414b214ce31659bded2f8df50c93a3769474", "status": "affected", "versionType": "git" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "lessThan": "32d417497b79efb403d75f4c185fe6fd9d64b94f", "status": "affected", "versionType": "git" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "lessThan": "7a29f6bf60f2590fe5e9c4decb451e19afad2bcf", "status": "affected", "versionType": "git" }, { "version": "15df699fdc5af46a9fb15ae2d9326294852de5b5", "status": "affected", "versionType": "git" }, { "version": "18bdaefc715b4530b4b2fe670506bb47713664cc", "status": "affected", "versionType": "git" }, { "version": "3.16.57", "lessThan": "3.17", "status": "affected", "versionType": "semver" }, { "version": "4.15.8", "lessThan": "4.16", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/l2tp/l2tp_core.c" ], "versions": [ { "version": "4.16", "status": "affected" }, { "version": "0", "lessThan": "4.16", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.249", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.199", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.162", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.122", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.68", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.8", "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": "4.16", "versionEndExcluding": "5.10.249" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "5.15.199" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.1.162" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.6.122" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.12.68" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.18.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.16", "versionEndExcluding": "6.19" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.16.57" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1f63ca44b4f419a1663d94d1bb0b4e2beb73fdb4" }, { "url": "https://git.kernel.org/stable/c/36c40a80109f1771d59558050b1a71e13c60c759" }, { "url": "https://git.kernel.org/stable/c/eae074dab764ea181bbed5e88626889319177498" }, { "url": "https://git.kernel.org/stable/c/68e92085427c84e7679ddb53c0d68836d220b6e7" }, { "url": "https://git.kernel.org/stable/c/3d6d414b214ce31659bded2f8df50c93a3769474" }, { "url": "https://git.kernel.org/stable/c/32d417497b79efb403d75f4c185fe6fd9d64b94f" }, { "url": "https://git.kernel.org/stable/c/7a29f6bf60f2590fe5e9c4decb451e19afad2bcf" } ], "title": "l2tp: avoid one data-race in l2tp_tunnel_del_work()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2026-23120", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-06-10T20:41:40.769196Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-11T18:44:15.028Z" } } ] } }