CVE-2021-38604
Published: 12 August 2021
In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_REMOVED data, leading to a NULL pointer dereference. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix.
Notes
| Author | Note |
|---|---|
| sbeattie | 21.04 and earlier are not affected due to the fix for CVE-2021-33574 having not been introduced yet. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
eglibc Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
glibc Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| focal |
Not vulnerable
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Not vulnerable
(2.34-0ubuntu3)
|
|
| jammy |
Not vulnerable
(2.34-0ubuntu3)
|
|
| trusty |
Does not exist
|
|
| upstream |
Pending
(2.35)
|
|
| xenial |
Not vulnerable
|
|
|
Patches: upstream: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=4cc79c217744743077bf7a0ec5e0a4318f1e6641 upstream: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b805aebd42364fe696e417808a700fdb9800c9e8 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |