VulnerabilityModified
CVE-2021-33574
The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free.
CRITICAL 9.8EPSS 2.87%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.87% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- gnu/glibc · fedoraproject/fedora · netapp/cloud backup · netapp/e-series santricity os controller · netapp/solidfire baseboard management controller firmware · netapp/h300s firmware · netapp/h500s firmware · netapp/h700s firmware · netapp/h300e firmware · netapp/h500e firmware · netapp/h700e firmware · netapp/h410s firmware · debian/debian linux
- Source
- cve@mitre.org
References
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJYYIMDDYOHTP2PORLABTOHYQYYREZDD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBUUWUGXVILQXVWEOU7N42ICHPJNAEUP/
- https://security.gentoo.org/glsa/202107-07Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210629-0005/Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=27896Exploit, Issue Tracking, Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=27896#c1Issue Tracking
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJYYIMDDYOHTP2PORLABTOHYQYYREZDD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBUUWUGXVILQXVWEOU7N42ICHPJNAEUP/
- https://security.gentoo.org/glsa/202107-07Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210629-0005/Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=27896Exploit, Issue Tracking, Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=27896#c1Issue Tracking
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.