{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-23120", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-23120", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-02-14T15:09:51.223Z", "updatedAt": "2026-10-19T18:25:31.962Z", "importedAt": "2026-10-24T01:58:02.025Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "l2tp: avoid one data-race in l2tp_tunnel_del_work()", "summary": "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": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "status": "affected", "versionType": "git", "lessThan": "1f63ca44b4f419a1663d94d1bb0b4e2beb73fdb4" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "status": "affected", "versionType": "git", "lessThan": "36c40a80109f1771d59558050b1a71e13c60c759" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "status": "affected", "versionType": "git", "lessThan": "eae074dab764ea181bbed5e88626889319177498" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "status": "affected", "versionType": "git", "lessThan": "68e92085427c84e7679ddb53c0d68836d220b6e7" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "status": "affected", "versionType": "git", "lessThan": "3d6d414b214ce31659bded2f8df50c93a3769474" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "status": "affected", "versionType": "git", "lessThan": "32d417497b79efb403d75f4c185fe6fd9d64b94f" }, { "version": "d00fa9adc528c1b0e64d532556764852df8bd7b9", "status": "affected", "versionType": "git", "lessThan": "7a29f6bf60f2590fe5e9c4decb451e19afad2bcf" }, { "version": "15df699fdc5af46a9fb15ae2d9326294852de5b5", "status": "affected", "versionType": "git" }, { "version": "18bdaefc715b4530b4b2fe670506bb47713664cc", "status": "affected", "versionType": "git" }, { "version": "3.16.57", "status": "affected", "versionType": "semver", "lessThan": "3.17" }, { "version": "4.15.8", "status": "affected", "versionType": "semver", "lessThan": "4.16" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.16", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.16" }, { "version": "5.10.249", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.199", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.162", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.122", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.68", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.8", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }