{"id":"DEBIAN-CVE-2026-68372","details":"In the Linux kernel, the following vulnerability has been resolved:  usb: core: port: Deattach Type-C connector on component unbind  connector_unbind() is the mirror of connector_bind(), but it is missing the symmetric call to typec_deattach() that connector_bind() makes via:      if (port_dev-\u003echild)         typec_attach(port_dev-\u003econnector, &port_dev-\u003echild-\u003edev);  When a Thunderbolt dock is unplugged, two teardown paths race:  1. The component framework calls connector_unbind() first, which sets    port_dev-\u003econnector = NULL without calling typec_deattach().  This    leaves port-\u003eusb2_dev/port-\u003eusb3_dev in struct typec_port pointing at    the USB device that is about to be freed.  2. usb_disconnect() then calls typec_deattach(port_dev-\u003econnector, ...),    but port_dev-\u003econnector is already NULL, so the call is a no-op and    port-\u003eusb2_dev is never cleared.  3. Concurrently, UCSI detects a PD partner-disconnect event and calls    typec_unregister_partner(), which reads port-\u003eusb2_dev (now a dangling    pointer to freed memory) and passes it to typec_partner_unlink_device()    -\u003e sysfs_remove_link() -\u003e dev_name() on the freed device, corrupting    the typec/UCSI partner state.  This corruption leaves the Thunderbolt tunnel in an inconsistent state on the next dock hot-plug.  On affected hardware the dock's I225/igc NIC fails to enumerate: AER fires a slot reset while the igc driver is still initialising (\"PCIe link lost\"), and the subsequent igc_reset attempt hits igc_rd32 on an already-detached device:      igc 0000:2e:00.0 eth0: PCIe link lost, device now detached     igc: Failed to read reg 0x0!     WARNING: CPU: 9 PID: 129 at drivers/net/ethernet/intel/igc/igc_main.c:7005              igc_rd32+0xa4/0xc0 [igc]     Call Trace:      igc_disable_pcie_master+0x16/0xa0 [igc]      igc_reset_hw_base+0x14/0x170 [igc]      igc_reset+0x63/0x110 [igc]      igc_io_slot_reset+0x9e/0xd0 [igc]      report_slot_reset+0x5d/0xc0      pcie_do_recovery+0x209/0x400      aer_isr_one_error_type+0x235/0x430      aer_isr+0x4e/0x80      irq_thread+0xf4/0x1f0  4. UCSI later handles the PD partner-disconnect and calls    typec_unregister_partner(), which still sees the stale port-\u003eusb2_dev    and tries to remove its sysfs link a second time:     kernfs: can not remove 'typec', no directory    WARNING: CPU: 6 PID: 55 at fs/kernfs/dir.c:1706 kernfs_remove_by_name_ns+0xe9/0xf0    Workqueue: events ucsi_handle_connector_change [typec_ucsi]    Call Trace:     sysfs_remove_link+0x19/0x50     typec_unregister_partner+0x6e/0x120 [typec]     ucsi_unregister_partner+0x107/0x150 [typec_ucsi]     ucsi_handle_connector_change+0x3ec/0x490 [typec_ucsi]     process_one_work+0x18e/0x3e0     worker_thread+0x2e3/0x420     kthread+0x10a/0x230     ret_from_fork+0x121/0x140     ret_from_fork_asm+0x1a/0x30     With worse timing the same stale pointer is dereferenced after the    backing memory is freed, turning the warning into a use-after-free.  Fix the asymmetry: call typec_deattach() before clearing port_dev-\u003econnector, matching what connector_bind() does on the bind side. typec_partner_deattach() is already protected by port-\u003epartner_link_lock, so it serialises safely with the concurrent typec_unregister_partner() path.","modified":"2026-08-27T22:48:52.738118532Z","published":"2026-08-10T13:20:30.040Z","upstream":["CVE-2026-68372"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-68372"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.101-1"}]}],"versions":["6.12.100-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-68372.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.1.6-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.10-1","6.16.11-1","6.16.12-1","6.16.12-1~bpo13+1","6.16.12-2","6.16.3-1","6.16.3-1~bpo13+1","6.16.5-1","6.16.6-1","6.16.7-1","6.16.8-1","6.16.9-1","6.16~rc7-1~exp1","6.17.10-1","6.17.11-1","6.17.12-1","6.17.13-1","6.17.13-1~bpo13+1","6.17.2-1~exp1","6.17.5-1~exp1","6.17.6-1","6.17.7-1","6.17.7-2","6.17.8-1","6.17.8-1~bpo13+1","6.17.9-1","6.18.1-1~exp1","6.18.10-1","6.18.12-1","6.18.12-1~bpo13+1","6.18.13-1","6.18.14-1","6.18.15-1","6.18.15-1~bpo13+1","6.18.2-1~exp1","6.18.3-1","6.18.5-1","6.18.5-1~bpo13+1","6.18.8-1","6.18.9-1","6.18.9-1~bpo13+1","6.18~rc4-1~exp1","6.18~rc4-1~exp2","6.18~rc5-1~exp1","6.18~rc6-1~exp1","6.18~rc7-1~exp1","6.19-1~exp1","6.19.10-1","6.19.10-1~bpo13+1","6.19.11-1","6.19.11-1~bpo13+1","6.19.12-1","6.19.13-1","6.19.13-1~bpo13+1","6.19.14-1","6.19.14-1~bpo13+1","6.19.2-1~exp1","6.19.3-1~exp1","6.19.4-1~exp1","6.19.5-1~exp1","6.19.6-1","6.19.6-2","6.19.6-2~bpo13+1","6.19.8-1","6.19.8-1~bpo13+1","6.19~rc4-1~exp1","6.19~rc5-1~exp1","6.19~rc6-1~exp1","6.19~rc7-1~exp1","6.19~rc8-1~exp1","7.0-1~exp1","7.0.1-1~exp1","7.0.10-1","7.0.10-1~bpo13+1","7.0.12-1","7.0.12-2","7.0.12-2~bpo13+1","7.0.13-1","7.0.13-1~bpo13+1","7.0.14-1","7.0.3-1","7.0.4-1","7.0.4-1~bpo13+1","7.0.7-1","7.0.7-1~bpo13+1","7.0.9-1","7.0.9-1~bpo13+1","7.1.1-1~exp1","7.1.2-1~exp1","7.1.3-1","7.1.3-1+sunvdc","7.1.3-1~bpo13+1","7.1.4-1","7.1.5-1","7.1~rc2-1~exp1","7.1~rc3-1~exp1","7.1~rc4-1~exp1","7.1~rc4-1~exp2","7.1~rc5-1~exp1","7.1~rc7-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-68372.json"}},{"package":{"name":"linux-6.12","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux-6.12?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.101-1~deb12u1"}]}],"versions":["6.12.100-1~deb12u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-68372.json"}}],"schema_version":"1.9.0"}