{"api_version":"1","generated_at":"2026-08-13T21:33:27+00:00","cve":"CVE-2026-68162","urls":{"html":"https://cve.report/CVE-2026-68162","api":"https://cve.report/api/cve/CVE-2026-68162.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68162","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68162"},"summary":{"title":"sctp: avoid auth_enable sysctl UAF during netns teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid auth_enable sysctl UAF during netns teardown\n\nproc_sctp_do_auth() updates the SCTP control socket after changing\nnet.sctp.auth_enable. The handler gets the per-net SCTP state from\nctl->data, so an already opened sysctl file can still target a network\nnamespace while that namespace is being torn down.\n\nSCTP previously registered its per-net sysctls from sctp_defaults_init(),\nwhile the control socket is created later from sctp_ctrlsock_init(). This\nexposed a window during initialization where auth_enable was writable\nbefore net->sctp.ctl_sock existed, and a teardown window where auth_enable\nstayed writable after inet_ctl_sock_destroy() had released the control\nsocket.\n\nMove the per-net SCTP sysctl registration into sctp_ctrlsock_init() after\nsctp_ctl_sock_init() succeeds, and unregister the sysctl table before\ndestroying the control socket in sctp_ctrlsock_exit(). If sysctl\nregistration fails after the control socket was created, destroy the\ncontrol socket in the same init path.\n\nMake sctp_sysctl_net_unregister() tolerate a missing header and clear the\nsaved pointer so init-error and exit paths can safely share the unregister\nhelper.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:02","updated_at":"2026-08-10 13:20:02"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/be6aae9d1b91c603adb35872d37d40e83daf8758","name":"https://git.kernel.org/stable/c/be6aae9d1b91c603adb35872d37d40e83daf8758","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/626bda8cfe43dff19a9833ff6ba055a817b5455c","name":"https://git.kernel.org/stable/c/626bda8cfe43dff19a9833ff6ba055a817b5455c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4","name":"https://git.kernel.org/stable/c/19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/66700c0719675e0e118ae83b2d7168dacd69dd3d","name":"https://git.kernel.org/stable/c/66700c0719675e0e118ae83b2d7168dacd69dd3d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a50e73488e0bbdd262b3be3c9a1d8dd078382381","name":"https://git.kernel.org/stable/c/a50e73488e0bbdd262b3be3c9a1d8dd078382381","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f8d5e7846025f4ab15a461235f8ebae9094a361a","name":"https://git.kernel.org/stable/c/f8d5e7846025f4ab15a461235f8ebae9094a361a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68162","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68162","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 10c869a52f266e40f548cc3c565d14930a5edafc 19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6 66700c0719675e0e118ae83b2d7168dacd69dd3d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c184bc621e3cef03ac9ba81a50dda2dae6a21d36 626bda8cfe43dff19a9833ff6ba055a817b5455c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 15649fd5415eda664ef35780c2013adeb5d9c695 be6aae9d1b91c603adb35872d37d40e83daf8758 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 15649fd5415eda664ef35780c2013adeb5d9c695 a50e73488e0bbdd262b3be3c9a1d8dd078382381 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 15649fd5415eda664ef35780c2013adeb5d9c695 f8d5e7846025f4ab15a461235f8ebae9094a361a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dc583e7e5f8515ca489c0df28e4362a70eade382 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bd2a2939423566c654545fa3e96a656662a0af9e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1b67030d39f2b00f94ac1f0af11ba6657589e4d3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.4.290 5.4.292 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.72 6.6.151 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.10 6.12.101 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.234 5.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.177 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.125 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.4.292 5.4.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.151 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sctp/protocol.c","net/sctp/sysctl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4","status":"affected","version":"10c869a52f266e40f548cc3c565d14930a5edafc","versionType":"git"},{"lessThan":"66700c0719675e0e118ae83b2d7168dacd69dd3d","status":"affected","version":"7ec30c54f339c640aa7e49d7e9f7bbed6bd42bf6","versionType":"git"},{"lessThan":"626bda8cfe43dff19a9833ff6ba055a817b5455c","status":"affected","version":"c184bc621e3cef03ac9ba81a50dda2dae6a21d36","versionType":"git"},{"lessThan":"be6aae9d1b91c603adb35872d37d40e83daf8758","status":"affected","version":"15649fd5415eda664ef35780c2013adeb5d9c695","versionType":"git"},{"lessThan":"a50e73488e0bbdd262b3be3c9a1d8dd078382381","status":"affected","version":"15649fd5415eda664ef35780c2013adeb5d9c695","versionType":"git"},{"lessThan":"f8d5e7846025f4ab15a461235f8ebae9094a361a","status":"affected","version":"15649fd5415eda664ef35780c2013adeb5d9c695","versionType":"git"},{"status":"affected","version":"dc583e7e5f8515ca489c0df28e4362a70eade382","versionType":"git"},{"status":"affected","version":"bd2a2939423566c654545fa3e96a656662a0af9e","versionType":"git"},{"status":"affected","version":"1b67030d39f2b00f94ac1f0af11ba6657589e4d3","versionType":"git"},{"lessThan":"5.4.292","status":"affected","version":"5.4.290","versionType":"semver"},{"lessThan":"6.6.151","status":"affected","version":"6.6.72","versionType":"semver"},{"lessThan":"6.12.101","status":"affected","version":"6.12.10","versionType":"semver"},{"lessThan":"5.11","status":"affected","version":"5.10.234","versionType":"semver"},{"lessThan":"5.16","status":"affected","version":"5.15.177","versionType":"semver"},{"lessThan":"6.2","status":"affected","version":"6.1.125","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/sctp/protocol.c","net/sctp/sysctl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.4.*","status":"unaffected","version":"5.4.292","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.4.292","versionStartIncluding":"5.4.290","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.151","versionStartIncluding":"6.6.72","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"6.12.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.234","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.177","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.125","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid auth_enable sysctl UAF during netns teardown\n\nproc_sctp_do_auth() updates the SCTP control socket after changing\nnet.sctp.auth_enable. The handler gets the per-net SCTP state from\nctl->data, so an already opened sysctl file can still target a network\nnamespace while that namespace is being torn down.\n\nSCTP previously registered its per-net sysctls from sctp_defaults_init(),\nwhile the control socket is created later from sctp_ctrlsock_init(). This\nexposed a window during initialization where auth_enable was writable\nbefore net->sctp.ctl_sock existed, and a teardown window where auth_enable\nstayed writable after inet_ctl_sock_destroy() had released the control\nsocket.\n\nMove the per-net SCTP sysctl registration into sctp_ctrlsock_init() after\nsctp_ctl_sock_init() succeeds, and unregister the sysctl table before\ndestroying the control socket in sctp_ctrlsock_exit(). If sysctl\nregistration fails after the control socket was created, destroy the\ncontrol socket in the same init path.\n\nMake sctp_sysctl_net_unregister() tolerate a missing header and clear the\nsaved pointer so init-error and exit paths can safely share the unregister\nhelper."}],"providerMetadata":{"dateUpdated":"2026-08-10T11:59:29.099Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/19573dcddb8819fd68d6cd1f916c1c99c3fa4ff4"},{"url":"https://git.kernel.org/stable/c/66700c0719675e0e118ae83b2d7168dacd69dd3d"},{"url":"https://git.kernel.org/stable/c/626bda8cfe43dff19a9833ff6ba055a817b5455c"},{"url":"https://git.kernel.org/stable/c/be6aae9d1b91c603adb35872d37d40e83daf8758"},{"url":"https://git.kernel.org/stable/c/a50e73488e0bbdd262b3be3c9a1d8dd078382381"},{"url":"https://git.kernel.org/stable/c/f8d5e7846025f4ab15a461235f8ebae9094a361a"}],"title":"sctp: avoid auth_enable sysctl UAF during netns teardown","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68162","datePublished":"2026-08-10T11:59:29.099Z","dateReserved":"2026-07-30T09:28:09.372Z","dateUpdated":"2026-08-10T11:59:29.099Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:02","lastModifiedDate":"2026-08-10 13:20:02","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68162","Ordinal":"1","Title":"sctp: avoid auth_enable sysctl UAF during netns teardown","CVE":"CVE-2026-68162","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68162","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid auth_enable sysctl UAF during netns teardown\n\nproc_sctp_do_auth() updates the SCTP control socket after changing\nnet.sctp.auth_enable. The handler gets the per-net SCTP state from\nctl->data, so an already opened sysctl file can still target a network\nnamespace while that namespace is being torn down.\n\nSCTP previously registered its per-net sysctls from sctp_defaults_init(),\nwhile the control socket is created later from sctp_ctrlsock_init(). This\nexposed a window during initialization where auth_enable was writable\nbefore net->sctp.ctl_sock existed, and a teardown window where auth_enable\nstayed writable after inet_ctl_sock_destroy() had released the control\nsocket.\n\nMove the per-net SCTP sysctl registration into sctp_ctrlsock_init() after\nsctp_ctl_sock_init() succeeds, and unregister the sysctl table before\ndestroying the control socket in sctp_ctrlsock_exit(). If sysctl\nregistration fails after the control socket was created, destroy the\ncontrol socket in the same init path.\n\nMake sctp_sysctl_net_unregister() tolerate a missing header and clear the\nsaved pointer so init-error and exit paths can safely share the unregister\nhelper.","Type":"Description","Title":"sctp: avoid auth_enable sysctl UAF during netns teardown"}]}}}