CVE-2026-90335
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
tty: skip cdev_del() when no cdev is registered
TTY device registration can fail before a cdev is allocated. Serial core keeps the port so setserial can still use it, and later removal passes the NULL cdev slot to cdev_del(), causing a NULL-pointer dereference.
Only delete the cdev when the slot is not NULL.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | a3a10ce3429e5dee623ad5c8407ea58e204fcb0a < 3dbf85ef40b6366ba15e882f7536cdc98bea579a | affected |
| Linux | Linux | a3a10ce3429e5dee623ad5c8407ea58e204fcb0a < c3b5623fd97648f2747444aa8932ae604662df93 | affected |
| Linux | Linux | 4.3 | affected |
| Linux | Linux | 0 < 4.3 | unaffected |
| Linux | Linux | 7.2.6 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/3dbf85ef40b6366ba15e882f7536cdc98bea579a
- https://git.kernel.org/stable/c/c3b5623fd97648f2747444aa8932ae604662df93
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