CVE-2026-90334tty: clear cdev pointer after cdev_add() failure
- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 88% 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: tty: clear cdev pointer after cdev_add() failure tty_cdev_add() drops the cdev reference when cdev_add() fails, but leaves driver->cdevs[index] pointing to freed memory. tty_unregister_device() later passes that stale pointer to cdev_del(), causing a use-after-free. Clear the slot after dropping the reference.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 32 days later
· 32 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)
- 0.22% · top 88% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected c1a752ba2d6b8a52879c7ab637cff38359ea9827 – < fb1de260033c215dba438973d82b48562bdc86bb
- affected c1a752ba2d6b8a52879c7ab637cff38359ea9827 – < e9e64dd02fd68776afda00777591eca0c3984285
- affected c1a752ba2d6b8a52879c7ab637cff38359ea9827 – < 33a44333a9dfda044b0e233399b12ead7f8a90ae
- affected c1a752ba2d6b8a52879c7ab637cff38359ea9827 – < d331c63570af61ef7aaf516b64a8d6f47518a3a4
- affected c1a752ba2d6b8a52879c7ab637cff38359ea9827 – < a83fcddf3c75d004f12aa13555bb73da19fb75a9
- affected c1a752ba2d6b8a52879c7ab637cff38359ea9827 – < 4f6bd79bb7e55095f09bec9b4eb6c09df1306116
- affected c1a752ba2d6b8a52879c7ab637cff38359ea9827 – < 5c5a795bf6248fe96f96dd9fd79d66bbb4a92077
- affected c1a752ba2d6b8a52879c7ab637cff38359ea9827 – < 6645856f0df3aeecd45519cb611415b4b89c2223
- affected 4.3
- unaffected < 4.3
- unaffected 5.10.270 – ≤ 5.10.*
- 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 6.18.52 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/fb1de260033c215dba438973d82b48562bdc86bb (opens in a new tab)
- https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285 (opens in a new tab)
- https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae (opens in a new tab)
- https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4 (opens in a new tab)
- https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9 (opens in a new tab)
- https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116 (opens in a new tab)
- https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077 (opens in a new tab)
- https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223 (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-2026-81995 (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-2026-90334)Record last updated .