{"id":"CVE-2026-98074","state":"PUBLISHED","title":"bonding: do not clear curr_active_slave prematurely when releasing all slaves","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: do not clear curr_active_slave prematurely when releasing all slaves\n\nWhen releasing all slaves during bond destruction (all == true),\n__bond_release_one() unconditionally clears bond->curr_active_slave to\nNULL in every iteration.\n\nIf a backup slave is released before the active slave,\nbond_alb_deinit_slave() triggers rlb_teach_disabled_mac_on_primary(),\nwhich increments the active slave dev promiscuity counter and sets\nbond_info->primary_is_promisc = 1.\n\nBecause bond->curr_active_slave was prematurely cleared to NULL when\nreleasing the backup slave, the subsequent iteration releasing the active\nslave evaluates oldcurrent as NULL, so bond_change_active_slave(bond, NULL)\nis skipped. Consequently, bond_alb_handle_active_change() is never called\nto decrement the promiscuity counter, permanently leaking promiscuous\nmode on the physical device after bond teardown.\n\nWhen oldcurrent == slave, bond_change_active_slave(bond, NULL) already sets\nbond->curr_active_slave to NULL. We only need to avoid selecting a new\nactive slave when all == true. Replace the if (all) branch with\nif (!all && oldcurrent == slave).","publishedAt":"2026-09-25T10:24:13.870Z","updatedAt":"2026-10-19T09:13:23.911Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"b1ded242135071769902778dbab081e3fc09730f","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"e39b203ec9e73852098d41b26386172d51babeb9","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"384739c631aa6749356ba062d6b7c9a484a733f6","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"7b435c69a30b40efc642de98b9bfa95fcf2ad4f0","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"d6ef22e79c2be3612868daede0e9a84f05439d9e","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"19ba7ecfade159b3702c78a360fd7d971e2b7109","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"6d0ee411d5437f3d126ea6979acb83a8da29dc81","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"af602c7aa5fedc9be3043244017aef4f26c96b70","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_main.c"]}],"references":["https://git.kernel.org/stable/c/b1ded242135071769902778dbab081e3fc09730f","https://git.kernel.org/stable/c/e39b203ec9e73852098d41b26386172d51babeb9","https://git.kernel.org/stable/c/384739c631aa6749356ba062d6b7c9a484a733f6","https://git.kernel.org/stable/c/7b435c69a30b40efc642de98b9bfa95fcf2ad4f0","https://git.kernel.org/stable/c/d6ef22e79c2be3612868daede0e9a84f05439d9e","https://git.kernel.org/stable/c/19ba7ecfade159b3702c78a360fd7d971e2b7109","https://git.kernel.org/stable/c/6d0ee411d5437f3d126ea6979acb83a8da29dc81","https://git.kernel.org/stable/c/af602c7aa5fedc9be3043244017aef4f26c96b70"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98074.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98074","state":"PUBLISHED","datePublished":"2026-09-25T10:24:13.870Z","dateUpdated":"2026-10-19T09:13:23.911Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:19:56.074Z"},"containers":{"cna":{"title":"bonding: do not clear curr_active_slave prematurely when releasing all slaves","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: do not clear curr_active_slave prematurely when releasing all slaves\n\nWhen releasing all slaves during bond destruction (all == true),\n__bond_release_one() unconditionally clears bond->curr_active_slave to\nNULL in every iteration.\n\nIf a backup slave is released before the active slave,\nbond_alb_deinit_slave() triggers rlb_teach_disabled_mac_on_primary(),\nwhich increments the active slave dev promiscuity counter and sets\nbond_info->primary_is_promisc = 1.\n\nBecause bond->curr_active_slave was prematurely cleared to NULL when\nreleasing the backup slave, the subsequent iteration releasing the active\nslave evaluates oldcurrent as NULL, so bond_change_active_slave(bond, NULL)\nis skipped. Consequently, bond_alb_handle_active_change() is never called\nto decrement the promiscuity counter, permanently leaking promiscuous\nmode on the physical device after bond teardown.\n\nWhen oldcurrent == slave, bond_change_active_slave(bond, NULL) already sets\nbond->curr_active_slave to NULL. We only need to avoid selecting a new\nactive slave when all == true. Replace the if (all) branch with\nif (!all && oldcurrent == slave)."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"b1ded242135071769902778dbab081e3fc09730f","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"e39b203ec9e73852098d41b26386172d51babeb9","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"384739c631aa6749356ba062d6b7c9a484a733f6","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"7b435c69a30b40efc642de98b9bfa95fcf2ad4f0","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"d6ef22e79c2be3612868daede0e9a84f05439d9e","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"19ba7ecfade159b3702c78a360fd7d971e2b7109","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"6d0ee411d5437f3d126ea6979acb83a8da29dc81","versionType":"git"},{"version":"0896341a44bf04bf6149d9307fe4686006f3eee1","status":"affected","lessThan":"af602c7aa5fedc9be3043244017aef4f26c96b70","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_main.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b1ded242135071769902778dbab081e3fc09730f"},{"url":"https://git.kernel.org/stable/c/e39b203ec9e73852098d41b26386172d51babeb9"},{"url":"https://git.kernel.org/stable/c/384739c631aa6749356ba062d6b7c9a484a733f6"},{"url":"https://git.kernel.org/stable/c/7b435c69a30b40efc642de98b9bfa95fcf2ad4f0"},{"url":"https://git.kernel.org/stable/c/d6ef22e79c2be3612868daede0e9a84f05439d9e"},{"url":"https://git.kernel.org/stable/c/19ba7ecfade159b3702c78a360fd7d971e2b7109"},{"url":"https://git.kernel.org/stable/c/6d0ee411d5437f3d126ea6979acb83a8da29dc81"},{"url":"https://git.kernel.org/stable/c/af602c7aa5fedc9be3043244017aef4f26c96b70"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:13:23.911Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}