{"api_version":"1","generated_at":"2026-07-26T21:47:40+00:00","cve":"CVE-2026-64455","urls":{"html":"https://cve.report/CVE-2026-64455","api":"https://cve.report/api/cve/CVE-2026-64455.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64455","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64455"},"summary":{"title":"USB: chaoskey: Fix slab-use-after-free in chaoskey_release()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: chaoskey: Fix slab-use-after-free in chaoskey_release()\n\nThe chaoskey driver has a use-after-free bug in its release routine.\nIf the user closes the device file after the USB device has been\nunplugged, a debugging log statement will try to access the\nusb_interface structure after it has been deallocated:\n\n\tBUG: KASAN: slab-use-after-free in dev_driver_string (drivers/base/core.c:2406)\n\tRead of size 8 at addr ffff888168e8a0b8 by task chaoskey_raw_re/10106\n\n\tHardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n\tCall Trace:\n\t <TASK>\n\t dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)\n\t print_report (mm/kasan/report.c:378 mm/kasan/report.c:482)\n\t kasan_report (mm/kasan/report.c:595)\n\t dev_driver_string (drivers/base/core.c:2406)\n\t __dynamic_dev_dbg (lib/dynamic_debug.c:906)\n\t chaoskey_release (drivers/usb/misc/chaoskey.c:323)\n\t __fput (fs/file_table.c:510)\n\t fput_close_sync (fs/file_table.c:615)\n\t __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)\n\t do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\n\t entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nThe driver's last reference to the interface structure is dropped in\nthe chaoskey_free() routine, so the code must not use the interface --\neven in a debugging statement -- after that routine returns.\n(Exception: If we know that another reference is held by someone else,\nsuch as the device core while the disconnect routine runs, there's no\nproblem.  Thanks to Johan Hovold for pointing this out.)\n\nSince the bad access is part of an unimportant debugging statement,\nwe can fix the problem simply by removing the whole statement.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:30","updated_at":"2026-07-25 10:17:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8f50613bff228272577893aa10a346a2f3063e49","name":"https://git.kernel.org/stable/c/8f50613bff228272577893aa10a346a2f3063e49","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3ad5fbcced4e9c2b0fee3c1b76289a147fc35b89","name":"https://git.kernel.org/stable/c/3ad5fbcced4e9c2b0fee3c1b76289a147fc35b89","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fe7a0f4be283b40dd592540027279735120d0d6f","name":"https://git.kernel.org/stable/c/fe7a0f4be283b40dd592540027279735120d0d6f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/abf76d3239dee97b66e7241ad04811f1ce562e28","name":"https://git.kernel.org/stable/c/abf76d3239dee97b66e7241ad04811f1ce562e28","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f3e409476ad0703c54c14f245e4e143c8124e1bd","name":"https://git.kernel.org/stable/c/f3e409476ad0703c54c14f245e4e143c8124e1bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6c82f88bc7a8458d5c60f9b354c4d32d233f0cac","name":"https://git.kernel.org/stable/c/6c82f88bc7a8458d5c60f9b354c4d32d233f0cac","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2a52d55c86a429dac47886b8424e67f90b001e67","name":"https://git.kernel.org/stable/c/2a52d55c86a429dac47886b8424e67f90b001e67","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5ec61fbef9ec5635c492ae63dfb5d13f2bdf1023","name":"https://git.kernel.org/stable/c/5ec61fbef9ec5635c492ae63dfb5d13f2bdf1023","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64455","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64455","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 66e3e591891da9899a8990792da080432531ffd4 fe7a0f4be283b40dd592540027279735120d0d6f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 66e3e591891da9899a8990792da080432531ffd4 5ec61fbef9ec5635c492ae63dfb5d13f2bdf1023 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 66e3e591891da9899a8990792da080432531ffd4 f3e409476ad0703c54c14f245e4e143c8124e1bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 66e3e591891da9899a8990792da080432531ffd4 6c82f88bc7a8458d5c60f9b354c4d32d233f0cac git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 66e3e591891da9899a8990792da080432531ffd4 3ad5fbcced4e9c2b0fee3c1b76289a147fc35b89 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 66e3e591891da9899a8990792da080432531ffd4 2a52d55c86a429dac47886b8424e67f90b001e67 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 66e3e591891da9899a8990792da080432531ffd4 8f50613bff228272577893aa10a346a2f3063e49 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 66e3e591891da9899a8990792da080432531ffd4 abf76d3239dee97b66e7241ad04811f1ce562e28 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.261 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64455","cve":"CVE-2026-64455","epss":"0.002200000","percentile":"0.125900000","score_date":"2026-07-25","updated_at":"2026-07-26 00:12:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/misc/chaoskey.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"fe7a0f4be283b40dd592540027279735120d0d6f","status":"affected","version":"66e3e591891da9899a8990792da080432531ffd4","versionType":"git"},{"lessThan":"5ec61fbef9ec5635c492ae63dfb5d13f2bdf1023","status":"affected","version":"66e3e591891da9899a8990792da080432531ffd4","versionType":"git"},{"lessThan":"f3e409476ad0703c54c14f245e4e143c8124e1bd","status":"affected","version":"66e3e591891da9899a8990792da080432531ffd4","versionType":"git"},{"lessThan":"6c82f88bc7a8458d5c60f9b354c4d32d233f0cac","status":"affected","version":"66e3e591891da9899a8990792da080432531ffd4","versionType":"git"},{"lessThan":"3ad5fbcced4e9c2b0fee3c1b76289a147fc35b89","status":"affected","version":"66e3e591891da9899a8990792da080432531ffd4","versionType":"git"},{"lessThan":"2a52d55c86a429dac47886b8424e67f90b001e67","status":"affected","version":"66e3e591891da9899a8990792da080432531ffd4","versionType":"git"},{"lessThan":"8f50613bff228272577893aa10a346a2f3063e49","status":"affected","version":"66e3e591891da9899a8990792da080432531ffd4","versionType":"git"},{"lessThan":"abf76d3239dee97b66e7241ad04811f1ce562e28","status":"affected","version":"66e3e591891da9899a8990792da080432531ffd4","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/misc/chaoskey.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.1"},{"lessThan":"4.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"4.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc3","versionStartIncluding":"4.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: chaoskey: Fix slab-use-after-free in chaoskey_release()\n\nThe chaoskey driver has a use-after-free bug in its release routine.\nIf the user closes the device file after the USB device has been\nunplugged, a debugging log statement will try to access the\nusb_interface structure after it has been deallocated:\n\n\tBUG: KASAN: slab-use-after-free in dev_driver_string (drivers/base/core.c:2406)\n\tRead of size 8 at addr ffff888168e8a0b8 by task chaoskey_raw_re/10106\n\n\tHardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n\tCall Trace:\n\t <TASK>\n\t dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)\n\t print_report (mm/kasan/report.c:378 mm/kasan/report.c:482)\n\t kasan_report (mm/kasan/report.c:595)\n\t dev_driver_string (drivers/base/core.c:2406)\n\t __dynamic_dev_dbg (lib/dynamic_debug.c:906)\n\t chaoskey_release (drivers/usb/misc/chaoskey.c:323)\n\t __fput (fs/file_table.c:510)\n\t fput_close_sync (fs/file_table.c:615)\n\t __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)\n\t do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\n\t entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nThe driver's last reference to the interface structure is dropped in\nthe chaoskey_free() routine, so the code must not use the interface --\neven in a debugging statement -- after that routine returns.\n(Exception: If we know that another reference is held by someone else,\nsuch as the device core while the disconnect routine runs, there's no\nproblem.  Thanks to Johan Hovold for pointing this out.)\n\nSince the bad access is part of an unimportant debugging statement,\nwe can fix the problem simply by removing the whole statement."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:51:23.952Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/fe7a0f4be283b40dd592540027279735120d0d6f"},{"url":"https://git.kernel.org/stable/c/5ec61fbef9ec5635c492ae63dfb5d13f2bdf1023"},{"url":"https://git.kernel.org/stable/c/f3e409476ad0703c54c14f245e4e143c8124e1bd"},{"url":"https://git.kernel.org/stable/c/6c82f88bc7a8458d5c60f9b354c4d32d233f0cac"},{"url":"https://git.kernel.org/stable/c/3ad5fbcced4e9c2b0fee3c1b76289a147fc35b89"},{"url":"https://git.kernel.org/stable/c/2a52d55c86a429dac47886b8424e67f90b001e67"},{"url":"https://git.kernel.org/stable/c/8f50613bff228272577893aa10a346a2f3063e49"},{"url":"https://git.kernel.org/stable/c/abf76d3239dee97b66e7241ad04811f1ce562e28"}],"title":"USB: chaoskey: Fix slab-use-after-free in chaoskey_release()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64455","datePublished":"2026-07-25T08:51:23.952Z","dateReserved":"2026-07-19T15:36:31.789Z","dateUpdated":"2026-07-25T08:51:23.952Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:30","lastModifiedDate":"2026-07-25 10:17:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64455","Ordinal":"1","Title":"USB: chaoskey: Fix slab-use-after-free in chaoskey_release()","CVE":"CVE-2026-64455","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64455","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: chaoskey: Fix slab-use-after-free in chaoskey_release()\n\nThe chaoskey driver has a use-after-free bug in its release routine.\nIf the user closes the device file after the USB device has been\nunplugged, a debugging log statement will try to access the\nusb_interface structure after it has been deallocated:\n\n\tBUG: KASAN: slab-use-after-free in dev_driver_string (drivers/base/core.c:2406)\n\tRead of size 8 at addr ffff888168e8a0b8 by task chaoskey_raw_re/10106\n\n\tHardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n\tCall Trace:\n\t <TASK>\n\t dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)\n\t print_report (mm/kasan/report.c:378 mm/kasan/report.c:482)\n\t kasan_report (mm/kasan/report.c:595)\n\t dev_driver_string (drivers/base/core.c:2406)\n\t __dynamic_dev_dbg (lib/dynamic_debug.c:906)\n\t chaoskey_release (drivers/usb/misc/chaoskey.c:323)\n\t __fput (fs/file_table.c:510)\n\t fput_close_sync (fs/file_table.c:615)\n\t __x64_sys_close (fs/open.c:1507 fs/open.c:1492 fs/open.c:1492)\n\t do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\n\t entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nThe driver's last reference to the interface structure is dropped in\nthe chaoskey_free() routine, so the code must not use the interface --\neven in a debugging statement -- after that routine returns.\n(Exception: If we know that another reference is held by someone else,\nsuch as the device core while the disconnect routine runs, there's no\nproblem.  Thanks to Johan Hovold for pointing this out.)\n\nSince the bad access is part of an unimportant debugging statement,\nwe can fix the problem simply by removing the whole statement.","Type":"Description","Title":"USB: chaoskey: Fix slab-use-after-free in chaoskey_release()"}]}}}