CVE-2026-90334
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c1a752ba2d6b8a52879c7ab637cff38359ea9827 < fb1de260033c215dba438973d82b48562bdc86bb | affected |
| Linux | Linux | c1a752ba2d6b8a52879c7ab637cff38359ea9827 < e9e64dd02fd68776afda00777591eca0c3984285 | affected |
| Linux | Linux | c1a752ba2d6b8a52879c7ab637cff38359ea9827 < 33a44333a9dfda044b0e233399b12ead7f8a90ae | affected |
| Linux | Linux | c1a752ba2d6b8a52879c7ab637cff38359ea9827 < d331c63570af61ef7aaf516b64a8d6f47518a3a4 | affected |
| Linux | Linux | c1a752ba2d6b8a52879c7ab637cff38359ea9827 < a83fcddf3c75d004f12aa13555bb73da19fb75a9 | affected |
| Linux | Linux | c1a752ba2d6b8a52879c7ab637cff38359ea9827 < 4f6bd79bb7e55095f09bec9b4eb6c09df1306116 | affected |
| Linux | Linux | c1a752ba2d6b8a52879c7ab637cff38359ea9827 < 5c5a795bf6248fe96f96dd9fd79d66bbb4a92077 | affected |
| Linux | Linux | c1a752ba2d6b8a52879c7ab637cff38359ea9827 < 6645856f0df3aeecd45519cb611415b4b89c2223 | affected |
| Linux | Linux | 4.3 | affected |
| Linux | Linux | 0 < 4.3 | unaffected |
| Linux | Linux | 5.10.270 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.221 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.188 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.157 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.110 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.52 <= 6.18.* | unaffected |
| Linux | Linux | 7.2.6 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/fb1de260033c215dba438973d82b48562bdc86bb
- https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285
- https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae
- https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4
- https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9
- https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116
- https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077
- https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223
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