CVE-2023-5156
Glibc: dos due to memory leak in getaddrinfo.c
HIGH
7.5
CVSS Score
Published: September 25, 2023 at 03:55 PM UTC
Updated: October 14, 2026 at 10:17 PM UTC
2 products affected across 2 vendorsEnterprise LinuxGlibc
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit
Description
A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a memory leak, which may result in an application crash.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
2.34 ≤ v < 2.39
Affected range stops below 2.39, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 8 (unaffected)
Vendor states this is fixed in 9 (unaffected)
Vendor states this is fixed in 6 (unknown)
Vendor states this is fixed in 7 (unknown)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (11)
VDB Entryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2023-5156Issue Trackingx_refsource_REDHATPatch
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2240541Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2023/10/03/4Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2023/10/03/5Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2023/10/03/6Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2023/10/03/8SSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHredhat
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-401
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