In the Linux kernel before 5.4.16, a race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Link | Tags |
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https://bugzilla.suse.com/show_bug.cgi?id=1162002 | issue tracking third party advisory patch |
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ace17d56824165c7f4c68785d6b58971db954dd | patch vendor advisory |
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.16 | release notes vendor advisory |
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html | mailing list third party advisory vendor advisory |
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html | mailing list third party advisory vendor advisory |