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. 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.
Related bugs and status
CVE-2021-33574 (Candidate) is related to these bugs:
Bug #1927192: gdb ftbfs on armhf, testsuite timeouts
| Summary | In | Importance | Status | |||
|---|---|---|---|---|---|---|
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu) | High | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb | Medium | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu Impish) | High | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu Hirsute) | Undecided | Won't Fix | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu Groovy) | Undecided | Won't Fix | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu Focal) | Undecided | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu) | High | In Progress | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu Focal) | Undecided | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu Groovy) | Undecided | Won't Fix | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu Hirsute) | Undecided | Won't Fix | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu Impish) | Undecided | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu Mantic) | High | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu Mantic) | High | Won't Fix | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu Lunar) | Undecided | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu Lunar) | Undecided | Won't Fix | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu Kinetic) | Undecided | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu Kinetic) | Undecided | Won't Fix | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | gdb (Ubuntu Jammy) | Undecided | Fix Released | ||
| 1927192 | gdb ftbfs on armhf, testsuite timeouts | glibc (Ubuntu Jammy) | Medium | Fix Released | ||
See the 
CVE page on Mitre.org
for more details.
