CVE-2026-15588— Gdbusserver: glib2: gdbusserver pre-authentication dos via unbounded sasl line buffering
Possible ATT&CK Techniques 1AI
T1496 · Resource HijackingAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | any | affected |
any | affected | ||
| Red Hat | Red Hat Enterprise Linux 6 | any | affected |
| Red Hat | Red Hat Enterprise Linux 7 | any | affected |
| Red Hat | Red Hat Enterprise Linux 8 | any | affected |
any | affected | ||
| Red Hat | Red Hat Enterprise Linux 9 | any | affected |
any | affected | ||
| Red Hat | Red Hat Hardened Images | any | affected |
| Red Hat | Red Hat OpenShift Container Platform 4 | any | affected |
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I. Basic Information for CVE-2026-15588
Vulnerability Information
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Vulnerability Title
Gdbusserver: glib2: gdbusserver pre-authentication dos via unbounded sasl line buffering
Source: NVD (National Vulnerability Database)
Vulnerability Description
A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8 | |
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 | |
| Red Hat | Red Hat Hardened Images | - | cpe:/a:redhat:hummingbird:1 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 |
II. Public POCs for CVE-2026-15588
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-15588 (2)
Other References for CVE-2026-15588 (1)
Same Patch Batch · Red Hat · 2026-07-20 · 8 CVEs total
| CVE-2026-16242 | 9.4 CRITICAL | Hypershift: konnectivity proxy-server accepts agent connections without validating client |
| CVE-2026-12701 | 9.0 CRITICAL | Pulpcore: pulpcore: relative_path_validator bypass via directory traversal in filesystemex |
| CVE-2026-64612 | 7.5 HIGH | Libcupsfilters: cups-filters: libcupsfilters: cups image filter process abort via malforme |
| CVE-2026-12080 | 7.3 HIGH | Qemu-kvm: qemu-guest-agent: local privilege escalation via symlink attack in guest-ssh-add |
| CVE-2026-16277 | 6.5 MEDIUM | Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist() |
| CVE-2026-15813 | 6.5 MEDIUM | Kronosnet: kronosnet: memory corruption and out-of-bounds access via malformed network pac |
| CVE-2026-16254 | 4.3 MEDIUM | Claircore: claircore: denial of service via out-of-bounds slice in claircore's apk install |
IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 10
- CVE-2026-64612
Libcupsfilters: cups-filters: libcupsfilters: cups image fil - CVE-2026-16277
Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrl - CVE-2026-12080
Qemu-kvm: qemu-guest-agent: local privilege escalation via s - CVE-2026-15813
Kronosnet: kronosnet: memory corruption and out-of-bounds ac - CVE-2026-16118
Xdgmime: heap-based buffer overflow in _xdg_mime_magic_parse
Same vendor: Red Hat
- CVE-2026-64612
Libcupsfilters: cups-filters: libcupsfilters: cups image fil - CVE-2026-12701
Pulpcore: pulpcore: relative_path_validator bypass via direc - CVE-2026-16277
Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrl - CVE-2026-12080
Qemu-kvm: qemu-guest-agent: local privilege escalation via s - CVE-2026-16254
Claircore: claircore: denial of service via out-of-bounds sl
Same weakness: CWE-770
- CVE-2026-55831
Netty SPDY SETTINGS frame count materializes unbounded setti - CVE-2026-48824
Mailpit: Sibling-endpoint memory-exhaustion DoS via unbounde - CVE-2026-63750
SurrealDB before 3.1.0 Memory Amplification via /sql WebSock - CVE-2025-71396
SurrealDB before 2.2.2 Denial of Service via JavaScript Scri - CVE-2026-54490
websocket-driver: Resource limit bypass via message compress
V. Comments for CVE-2026-15588
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