CVE-2022-39046
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a...
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
7.5
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
- Record
CVE-2022-39046- CVSS 3.1
- 7.5 High
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:N/S:U/UI:N - Updated
- 2026-11-02
EUVDEUVD-2022-41592
7.5
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
- Record
EUVD-2022-41592- CVSS 3.1
- 7.5 High
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:N/S:U/UI:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f6rj-qrpf-jc34
5.3
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a...
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
- Record
GHSA-f6rj-qrpf-jc34- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
NVD
7.5
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
- Record
CVE-2022-39046- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
OSVBELL-CVE-2022-39046
5.3
CVE-2022-39046 does not affect BellSoft software
- Record
BELL-CVE-2022-39046- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSV
7.5
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
- Record
CVE-2022-39046- CVSS 3.1
- 7.5 High
CVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:N/S:U/UI:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2022-39046
5.3
An issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
- Record
UBUNTU-CVE-2022-39046- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:12316-1 No score
glibc-2.36-3.1 on GA media
These are all security issues fixed in the glibc-2.36-3.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:12316-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
glibcopenSUSE:Tumbleweed |
before 2.36-3.1 | 2.36-3.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-39046 is a high vulnerability (CVSS 7.5) in Gnu Glibc, published August 31, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.92%, the 79th percentile. Fixed in glibc 2.36-3.1.
References
sourceware.org/bugzilla/show_bug.cgi?id=29536
security.netapp.com/advisory/ntap-20221104-0002
security.gentoo.org/glsa/202310-03
openwall.com/lists/oss-security/2024/01/30/8
openwall.com/lists/oss-security/2024/01/30/6
packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
Show 9 moreShow less
seclists.org/fulldisclosure/2024/Feb/3
nvd.nist.gov/vuln/detail/CVE-2022-39046
github.com/advisories/GHSA-f6rj-qrpf-jc34
docs.bell-sw.com/security/cves/CVE-2022-39046
github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39046.json
ubuntu.com/security/CVE-2022-39046
sourceware.org/pipermail/libc-alpha/2022-August/141707.html
cve.org/CVERecord?id=CVE-2022-39046
suse.com/security/cve/CVE-2022-39046