CVE-2023-1393

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Source
https://cve.org/CVERecord?id=CVE-2023-1393
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-1393.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-1393
Downstream
AZL (3)
BELL (1)
CLSA (1)
DEBIAN (1)
MGASA (1)
OESA (1)
openSUSE (2)
RHSA (13)
RLSA (1)
SUSE (7)
UBUNTU (1)
Related
ALSA (6)
openSUSE (2)
SUSE (7)
Published
2023-03-30T00:00:00Z
Modified
2026-10-21T08:29:52Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.

Database specific 
{
    "cna_assigner":  "redhat",
    "cwe_ids":  [
        "CWE-416"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1393.json"
}
References

Affected packages

Git / gitlab.freedesktop.org/xorg/xserver

Affected ranges

Type
GIT
Repo
https://gitlab.freedesktop.org/xorg/xserver
Events
Introduced
7c791b15504cc86a929acaa88161f012cdbba59f
Fixed
26ef545b3502f61ca722a7a3373507e88ef64110
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "xorg-server 21.1.8"
                },
                {
                    "last_affected":  "xorg-server 21.1.8"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "fixed":  "26ef545b3502f61ca722a7a3373507e88ef64110"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

xorg-server 21.*
xorg-server 21.1.8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-1393.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "160585413429378803102572218228695144404",
            "length":  657
        },
        "id":  "CVE-2023-1393-1b85dd2e",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://gitlab.freedesktop.org/xorg/xserver@26ef545b3502f61ca722a7a3373507e88ef64110",
        "target":  {
            "file":  "composite/compwindow.c",
            "function":  "compDestroyWindow"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "103254248831506398757703880392320180491",
                "339826436945346044112941835826143984965",
                "202660166280233479096158750827021754636",
                "213413363971156131415867680387795205297"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2023-1393-2192cd90",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://gitlab.freedesktop.org/xorg/xserver@26ef545b3502f61ca722a7a3373507e88ef64110",
        "target":  {
            "file":  "composite/compwindow.c"
        }
    }
]
vanir_signatures_modified 
"2026-10-21T08:29:52Z"