CVE-2020-28941

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Summary

CVECVE-2020-28941
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-11-19 19:15:00 UTC
Updated2023-11-07 03:21:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-763

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Operating System Fedoraproject Fedora 32 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Fedoraproject Fedora 32 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Linux Linux Kernel All All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 32 Update: kernel-5.9.10-100.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Patch, Vendor Advisory
oss-security - Re: Linux kernel NULL-ptr deref bug in spk_ttyio_ldisc_close MLIST www.openwall.com Mailing List, Patch, Third Party Advisory
[SECURITY] Fedora 33 Update: kernel-5.9.10-200.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
speakup: Do not let the line discipline be used several times · torvalds/linux@d412275 · GitHub MISC github.com Patch, Third Party Advisory
[SECURITY] Fedora 32 Update: kernel-5.9.10-100.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
kernel/git/gregkh/tty.git - TTY/Serial driver development tree MISC git.kernel.org Patch, Vendor Advisory
oss-security - Linux kernel NULL-ptr deref bug in spk_ttyio_ldisc_close MISC www.openwall.com Mailing List, Patch, Third Party Advisory
[SECURITY] Fedora 33 Update: kernel-5.9.10-200.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Third Party Advisory
[SECURITY] [DLA 2483-1] linux-4.19 security update MLIST lists.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 750376 OpenSUSE Security Update for RT kernel (openSUSE-SU-2021:0242-1)
  • 750488 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2020:2260-1)
  • 750518 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2020:2161-1)
  • 900040 CBL-Mariner Linux Security Update for kernel 5.4.91
  • 903658 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3632)
  • 905877 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3632-1)
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