CVE-2021-3326
Publication date 27 January 2021
Last updated 18 August 2025
Ubuntu priority
Description
The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| eglibc | 25.10 questing | Not in release |
| 25.04 plucky | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty |
Vulnerable
|
|
| glibc | 25.10 questing |
Not affected
|
| 25.04 plucky |
Not affected
|
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Fixed 2.31-0ubuntu9.7
|
|
| 18.04 LTS bionic |
Fixed 2.27-3ubuntu1.5
|
|
| 16.04 LTS xenial |
Fixed 2.23-0ubuntu11.3+esm2
|
|
| 14.04 LTS trusty | Not in release |
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| Package | Patch details |
|---|---|
| glibc |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| 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 |
References
Related Ubuntu Security Notices (USN)
- USN-5310-1
- GNU C Library vulnerabilities
- 1 March 2022
- USN-5699-1
- GNU C Library vulnerabilities
- 25 October 2022