CVE-2026-68367

UNRATEDCVSS · not yet scored
—
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

usb: gadget: f_tcm: synchronize delayed set_alt with teardown

The f_tcm set_alt() path defers endpoint setup to a work item and completes the delayed status response from process context. The delayed work uses f_tcm private state and may complete the setup request after disconnect or function teardown has already moved on.

Cancel and drain the delayed set_alt work when the function is unbound or freed. For disable paths, which are reached under the composite device lock, use a small state machine and a non-sleeping cancellation path instead of cancel_work_sync(). If the work is already running, mark it cancelled and let the worker own the cleanup; otherwise tcm_disable() can cancel the queued work and clean up immediately.

Also serialize the final delayed-status completion with the cancellation check while holding the composite device lock. This prevents a disconnect from clearing delayed_status while the worker is about to complete the control request.

Validation reproduced this kernel report: BUG: KASAN: slab-use-after-free in tcm_delayed_set_alt+0x6c/0xef0

Call Trace: dump_stack_lvl+0x66/0xa0 print_report+0xce/0x630 ? tcm_delayed_set_alt+0x6c/0xef0 ? srso_alias_return_thunk+0x5/0xfbef5 ? __virt_addr_valid+0x188/0x320 ? tcm_delayed_set_alt+0x6c/0xef0 kasan_report+0xe0/0x110 ? tcm_delayed_set_alt+0x6c/0xef0 tcm_delayed_set_alt+0x6c/0xef0 ? __pfx_tcm_delayed_set_alt+0x10/0x10 ? process_one_work+0x4cb/0xb90 ? rcu_is_watching+0x20/0x50 ? tcm_delayed_set_alt+0x9/0xef0 process_one_work+0x4d7/0xb90 ? __pfx_process_one_work+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? __list_add_valid_or_report+0x37/0xf0 ? __pfx_tcm_delayed_set_alt+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 worker_thread+0x2d8/0x570 ? __pfx_worker_thread+0x10/0x10 kthread+0x1ad/0x1f0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x3c9/0x540 ? __pfx_ret_from_fork+0x10/0x10 ? srso_alias_return_thunk+0x5/0xfbef5 ? __switch_to+0x2e9/0x730 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30

Allocated by task 544: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 tcm_alloc+0x68/0x180 usb_get_function+0x36/0x60 config_usb_cfg_link+0x125/0x1b0 configfs_symlink+0x322/0x890 vfs_symlink+0xc2/0x270 filename_symlinkat+0x295/0x2f0 __x64_sys_symlinkat+0x62/0x90 do_syscall_64+0x115/0x6a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 661: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x43/0x70 kfree+0x2f9/0x530 config_usb_cfg_unlink+0x173/0x1e0 configfs_unlink+0x1fa/0x340 vfs_unlink+0x15c/0x510 filename_unlinkat+0x2ba/0x450 __x64_sys_unlinkat+0x63/0x90 do_syscall_64+0x115/0x6a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

EG Severity
Not assessed: no CVSS publishedA missing CVSS is not a severity of zero.
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
No SSVC decision: EchelonGraph has not assessed this CVECISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the BOD 26-04 block below.

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 10, 2026

Last Modified

August 23, 2026

References (8)

Vendor Advisories for CVE-2026-68367(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)
  • every version up to 6.1.187-1: fixed in 6.1.187-1
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1
  • every version up to 6.12.107-1~deb12u1: fixed in 6.12.107-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (33 versions)
  • every version up to 6.12.105-1: fixed in 6.12.105-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (161 versions)
  • every version up to 7.1.6-1: fixed in 7.1.6-1
—

Data Freshness Timeline

(refreshed 8× in last 7d / 42× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 97 is merged into the row it repeats.

  1. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  2. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  3. 2026-10-18 03:19 UTCEG score recompute
  4. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  5. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  6. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  7. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  8. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  9. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  10. 2026-10-12 15:45 UTCEG score recompute
  11. 2026-10-11 19:30 UTCEG score recompute
  12. 2026-10-11 16:45 UTCEG score recompute
  13. 2026-10-11 14:06 UTCEG score recompute
  14. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  17. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  22. 2026-10-04 05:22 UTCVendor advisory
  23. 2026-10-04 05:22 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  24. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  25. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
Show 71 more
  1. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  2. 2026-09-30 22:38 UTCEG score recompute
  3. 2026-09-30 22:38 UTCVendor advisory
  4. 2026-09-30 22:38 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  5. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  6. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  7. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-09-27 13:03 UTCVendor advisory
  9. 2026-09-27 13:03 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  10. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-09-23 12:14 UTCVendor advisory
  13. 2026-09-23 12:14 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  14. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-09-20 10:49 UTCVendor advisory
  17. 2026-09-20 10:49 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  18. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-09-17 08:08 UTCVendor advisory
  20. 2026-09-17 08:08 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  21. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  22. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  23. 2026-09-14 06:18 UTCVendor advisory
  24. 2026-09-14 06:18 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  25. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  26. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  27. 2026-09-11 04:53 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  28. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  29. 2026-09-08 03:27 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  30. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  31. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  32. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  33. 2026-09-05 02:01 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  34. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  35. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  36. 2026-09-01 17:45 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  37. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  38. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  39. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  40. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  41. 2026-08-29 16:18 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  42. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  43. 2026-08-26 14:47 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  44. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  45. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  46. 2026-08-23 13:20 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  47. 2026-08-23 13:19 UTCNVD update
  48. 2026-08-23 13:07 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  49. 2026-08-23 13:05 UTCMITRE cvelistV5
  50. 2026-08-23 09:24 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  51. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  52. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  53. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  54. 2026-08-20 07:57 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  55. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  56. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  57. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  58. 2026-08-17 06:32 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  59. 2026-08-17 06:18 UTCNVD update
  60. 2026-08-17 05:36 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  61. 2026-08-17 05:24 UTCMITRE cvelistV5
  62. 2026-08-16 16:16 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  63. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  64. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  65. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  66. 2026-08-13 14:50 UTCEG score recompute
  67. 2026-08-13 14:50 UTCGHSA enrichmentGHSA-c68p-69ww-4qwm
  68. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  69. 2026-08-10 13:24 UTCNVD update
  70. 2026-08-10 12:18 UTCEG score recompute
  71. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-68367?
CVE-2026-68367 is a vulnerability whose severity is not yet rated; its CVE record was published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ftcm: synchronize delayed setalt with teardown The ftcm setalt() path defers endpoint setup to a work item and completes the delayed status response from process context. The delayed work uses f_tcm private state and…
When was the CVE record for CVE-2026-68367 published?
The CVE record for CVE-2026-68367 was published on August 10, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of August 23, 2026; the record at its source may have been updated since.
Is CVE-2026-68367 actively exploited?
CVE-2026-68367 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-68367?
A fix for CVE-2026-68367 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-68367 are linked in the Vendor Advisories panel on this page.

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