{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"8fb317058d165c88f3344f59439c14872c162b3c","status":"affected","version":"c52661d60f636d17e26ad834457db333bd1df494","versionType":"git"},{"lessThan":"90431d8523c0c1c9f8e3e3f0895727063f93da85","status":"affected","version":"c52661d60f636d17e26ad834457db333bd1df494","versionType":"git"},{"lessThan":"ee07d09419f1c59c74f73107aa08444f2f2fc6c8","status":"affected","version":"c52661d60f636d17e26ad834457db333bd1df494","versionType":"git"},{"lessThan":"3118bb872c7dff653294f193d5328a476619e04d","status":"affected","version":"c52661d60f636d17e26ad834457db333bd1df494","versionType":"git"},{"lessThan":"a6eb5a0ae7cd313cfd7df78decd8f43b64c68703","status":"affected","version":"c52661d60f636d17e26ad834457db333bd1df494","versionType":"git"},{"lessThan":"f282242906c12fd476b86757afba51f211d4f959","status":"affected","version":"c52661d60f636d17e26ad834457db333bd1df494","versionType":"git"},{"lessThan":"4c6c6a5588b9a2f8437fb794e852d05fa60ebe53","status":"affected","version":"c52661d60f636d17e26ad834457db333bd1df494","versionType":"git"},{"lessThan":"79e2d75725c85607f8a9d87ae9cace62a19f767d","status":"affected","version":"c52661d60f636d17e26ad834457db333bd1df494","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"3.5"},{"lessThan":"3.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.266","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.217","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.184","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","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","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-68367","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_tcm: synchronize delayed set_alt with teardown\n\nThe f_tcm set_alt() path defers endpoint setup to a work item and\ncompletes the delayed status response from process context. The delayed\nwork uses f_tcm private state and may complete the setup request after\ndisconnect or function teardown has already moved on.\n\nCancel and drain the delayed set_alt work when the function is unbound or\nfreed. For disable paths, which are reached under the composite device\nlock, use a small state machine and a non-sleeping cancellation path\ninstead of cancel_work_sync(). If the work is already running, mark it\ncancelled and let the worker own the cleanup; otherwise tcm_disable() can\ncancel the queued work and clean up immediately.\n\nAlso serialize the final delayed-status completion with the cancellation\ncheck while holding the composite device lock. This prevents a disconnect\nfrom clearing delayed_status while the worker is about to complete the\ncontrol request.\n\nValidation reproduced this kernel report:\nBUG: KASAN: slab-use-after-free in tcm_delayed_set_alt+0x6c/0xef0\n\nCall Trace:\n <TASK>\n dump_stack_lvl+0x66/0xa0\n print_report+0xce/0x630\n ? tcm_delayed_set_alt+0x6c/0xef0\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __virt_addr_valid+0x188/0x320\n ? tcm_delayed_set_alt+0x6c/0xef0\n kasan_report+0xe0/0x110\n ? tcm_delayed_set_alt+0x6c/0xef0\n tcm_delayed_set_alt+0x6c/0xef0\n ? __pfx_tcm_delayed_set_alt+0x10/0x10\n ? process_one_work+0x4cb/0xb90\n ? rcu_is_watching+0x20/0x50\n ? tcm_delayed_set_alt+0x9/0xef0\n process_one_work+0x4d7/0xb90\n ? __pfx_process_one_work+0x10/0x10\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __list_add_valid_or_report+0x37/0xf0\n ? __pfx_tcm_delayed_set_alt+0x10/0x10\n ? srso_alias_return_thunk+0x5/0xfbef5\n worker_thread+0x2d8/0x570\n ? __pfx_worker_thread+0x10/0x10\n kthread+0x1ad/0x1f0\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x3c9/0x540\n ? __pfx_ret_from_fork+0x10/0x10\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __switch_to+0x2e9/0x730\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nAllocated by task 544:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n __kasan_kmalloc+0x8f/0xa0\n tcm_alloc+0x68/0x180\n usb_get_function+0x36/0x60\n config_usb_cfg_link+0x125/0x1b0\n configfs_symlink+0x322/0x890\n vfs_symlink+0xc2/0x270\n filename_symlinkat+0x295/0x2f0\n __x64_sys_symlinkat+0x62/0x90\n do_syscall_64+0x115/0x6a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFreed by task 661:\n kasan_save_stack+0x33/0x60\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x43/0x70\n kfree+0x2f9/0x530\n config_usb_cfg_unlink+0x173/0x1e0\n configfs_unlink+0x1fa/0x340\n vfs_unlink+0x15c/0x510\n filename_unlinkat+0x2ba/0x450\n __x64_sys_unlinkat+0x63/0x90\n do_syscall_64+0x115/0x6a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f","epss":{"date":"2026-11-06","percentile":0.08105,"score":0.00184},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793985570850,"publishedAt":1786363424600,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/8fb317058d165c88f3344f59439c14872c162b3c"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/90431d8523c0c1c9f8e3e3f0895727063f93da85"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ee07d09419f1c59c74f73107aa08444f2f2fc6c8"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/3118bb872c7dff653294f193d5328a476619e04d"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/a6eb5a0ae7cd313cfd7df78decd8f43b64c68703"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f282242906c12fd476b86757afba51f211d4f959"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/4c6c6a5588b9a2f8437fb794e852d05fa60ebe53"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/79e2d75725c85607f8a9d87ae9cace62a19f767d"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/3118bb872c7dff653294f193d5328a476619e04d"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/4c6c6a5588b9a2f8437fb794e852d05fa60ebe53"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/79e2d75725c85607f8a9d87ae9cace62a19f767d"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/8fb317058d165c88f3344f59439c14872c162b3c"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/90431d8523c0c1c9f8e3e3f0895727063f93da85"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/a6eb5a0ae7cd313cfd7df78decd8f43b64c68703"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/ee07d09419f1c59c74f73107aa08444f2f2fc6c8"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/f282242906c12fd476b86757afba51f211d4f959"}],"remediation":[],"revision":"34313c318d3e4d4f9ad34c358898d42436d7410c4a140bf5295d5583068e4e16","sources":[{"modifiedAt":1793984114761,"name":"CNA: Linux","retrievedAt":1793985983559,"url":"https://www.cve.org/CVERecord?id=CVE-2026-68367"},{"modifiedAt":1793985570850,"name":"NVD","retrievedAt":1793989638550,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68367"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793985993678,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-68367"}],"ssvc":{"assessedAt":1793983697702,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"usb: gadget: f_tcm: synchronize delayed set_alt with teardown","updatedAt":1793989638550}