CVE-2020-28941
An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 5.9.9.x |
| fedoraproject / fedora | 32 | 32.x |
| fedoraproject / fedora | 33 | 33.x |
| debian / debian_linux | 9.0 | 9.0.x |
- http://www.openwall.com/lists/oss-security/2020/11/19/5
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d4122754442799187d5d537a9c039a49a67e57f1
- https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-linus&id=d4122754442799187d5d537a9c039a49a67e57f1
- https://github.com/torvalds/linux/commit/d4122754442799187d5d537a9c039a49a67e57f1
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/
- https://www.openwall.com/lists/oss-security/2020/11/19/3
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