CVEvulnerability
CVE-2020-28941
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-11-19
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-763
Description
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.
Affected configurations
• linux linux kernel (<= 5.9.9)
• fedoraproject fedora 32
• fedoraproject fedora 33
• debian debian linux 9.0
Related
Weakness · CWE (1)
- CWE-763 Release of Invalid Pointer or Reference weakness
References
- http://www.openwall.com/lists/oss-security/2020/11/19/5 Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d4122754442799187d5d537a9c039a49a67e57f1 Patch, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-linus&id=d4122754442799187d5d537a9c039a49a67e57f1 Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/d4122754442799187d5d537a9c039a49a67e57f1 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/ lists.fedoraproject.org
- https://www.openwall.com/lists/oss-security/2020/11/19/3 Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/19/5 Mailing List, Patch, Third Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d4122754442799187d5d537a9c039a49a67e57f1 Patch, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-linus&id=d4122754442799187d5d537a9c039a49a67e57f1 Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/d4122754442799187d5d537a9c039a49a67e57f1 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/ lists.fedoraproject.org
- https://www.openwall.com/lists/oss-security/2020/11/19/3 Mailing List, Patch, Third Party Advisory