- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: i2c: core: fix debugfs UAF on adapter removal i2c_del_adapter() frees the adapter's debugfs directory before it unregisters the adapter device, but the new_device sysfs attribute stays writable until device_del(). A write racing with removal still reaches i2c_device_probe(), which passes the freed adap->debugfs to debugfs_create_dir() as the new client's parent: BUG: KASAN: slab-use-after-free in lookup_noperm_common+0x407/0x430 Read of size 4 at addr ffff88803ef87810 by task syz.0.61/6090 lookup_noperm_common+0x407/0x430 simple_start_creating+0x9c/0x110 debugfs_start_creating+0xdb/0x1a0 debugfs_create_dir+0x24/0x350 i2c_device_probe+0x814/0xbf0 It's technically possible to create a client after i2c_deregister_clients has run. That client will never be unregistered and make wait_for_completion hang. Close the window by removing the new_device attribute at the start of i2c_del_adapter(). device_remove_file() will drain any clients left.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 33 days later
· 33 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 0e8926abfd7aee220e44be5566affd7a8580b50e – < dc33a9762538b3250ed6b5644a4d44c748be33a6
- affected e2a268b0f512fb18ae5961b1fdfaf610ed6bd661 – < 1f1bcd4eca6caa3e4258d9a31925112539406eb6
- affected 4a2be5a72865bdd219b2d8c327b9fa03e87a4a9e – < f9094ace03e0a532cc6505d2e97b61ae738da4ed
- affected 73febd775bdbdb98c81255ff85773ac410ded5c4 – < 643fb872aa04342d27dbef52b2b3cf3fe71b2c7b
- affected 73febd775bdbdb98c81255ff85773ac410ded5c4 – < 112b3d48084c820bbccf41d9783fd122e3ac4cb0
- affected 73febd775bdbdb98c81255ff85773ac410ded5c4 – < 552836be2d95c688eede6371f85532abe1a71232
- affected 73febd775bdbdb98c81255ff85773ac410ded5c4 – < b15b548d52b43ba8ac4652bc2c7244a8dd1e9622
- affected 5.15.168 – < 5.15.221
- affected 6.1.113 – < 6.1.188
- affected 6.6.55 – < 6.6.157
- affected 6.8
- unaffected < 6.8
- unaffected 5.15.221 – ≤ 5.15.*
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.51 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References7
- https://git.kernel.org/stable/c/dc33a9762538b3250ed6b5644a4d44c748be33a6 (opens in a new tab)
- https://git.kernel.org/stable/c/1f1bcd4eca6caa3e4258d9a31925112539406eb6 (opens in a new tab)
- https://git.kernel.org/stable/c/f9094ace03e0a532cc6505d2e97b61ae738da4ed (opens in a new tab)
- https://git.kernel.org/stable/c/643fb872aa04342d27dbef52b2b3cf3fe71b2c7b (opens in a new tab)
- https://git.kernel.org/stable/c/112b3d48084c820bbccf41d9783fd122e3ac4cb0 (opens in a new tab)
- https://git.kernel.org/stable/c/552836be2d95c688eede6371f85532abe1a71232 (opens in a new tab)
- https://git.kernel.org/stable/c/b15b548d52b43ba8ac4652bc2c7244a8dd1e9622 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80583 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89983)Record last updated .