Application crash via unchecked stream length arithmetic
Published Jan 21, 2026 · Updated Jan 21, 2026
Buffer overflow in GLib on Red Hat Enterprise Linux 6 through 10 allows remote attackers to crash applications via crafted stream parameters. The g_buffered_input_stream_peek() function adds attacker-controlled offset and count values without validating overflow, then passes the wrapped length to memcpy(). Exploitation requires strict preconditions and high attack complexity; the documented consequence is an application crash and service interruption.
Summary
What happened
Buffer overflow in GLib on Red Hat Enterprise Linux 6 through 10 allows remote attackers to crash applications via crafted stream parameters. The g_buffered_input_stream_peek() function adds attacker-controlled offset and count values without validating overflow, then passes the wrapped length to memcpy(). Exploitation requires strict preconditions and high attack complexity; the documented consequence is an application crash and service interruption.
The record
- CVE
- CVE-2026-0988
- Published
- Jan 21, 2026
- Updated
- Jan 21, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat Enterprise Linux 6
- Classifications
- CWE-190, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 21, 2026CVE publishedPublication date reported by the CVE source.
- Jan 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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