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CVE-2023-4622

Use-after-free in Linux kernel's af_unix component

CVSS 3.1 7.8 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2023-4622

Published

A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation. The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free. We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c (or backported equivalents).

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2023-4622

Published

kernel

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Linux",
                    "product": "Kernel",
                    "packageName": "kernel",
                    "repo": "https://git.kernel.org",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "4.2",
                            "lessThan": "4.14.324",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.15",
                            "lessThan": "4.19.293",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "4.20",
                            "lessThan": "5.4.255",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "5.5",
                            "lessThan": "5.10.192",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "5.11",
                            "lessThan": "5.15.128",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "5.16",
                            "lessThan": "6.1.47",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "6.2",
                            "lessThan": "6.4.12",
                            "versionType": "custom"
                        },
                        {
                            "status": "unaffected",
                            "version": "6.5",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON