CVE-2025-22063
What it is
In the Linux kernel, the following vulnerability has been resolved: netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets When calling netlbl_conn_setattr(), addr->sa_family is used to determine the function behavior. If sk is an IPv4 socket, but the connect function is called with an IPv6 address, the function calipso_sock_setattr() is triggered. Inside this function, the following code is executed: sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL; Since sk is an IPv4 socket, pinet6 is NULL, leading to a null pointer dereference. This patch fixes the issue by checking if inet6_sk(sk) returns a NULL pointer before accessing pinet6.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.3% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Weakness
- CWE-476 · NULL pointer dereference
- Record status
- Modified
Affected
- Linux Kernel < 5.4.292
- Linux Kernel < 5.10.236
- Linux Kernel < 5.15.180
- Linux Kernel < 6.1.134
- Linux Kernel < 6.6.87
- Linux Kernel < 6.12.23
- Linux Kernel < 6.13.11
- Linux Kernel < 6.14.2
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-22063.md and follow it. Check whether this project is affected by CVE-2025-22063. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/078aabd567de3d63d37d7673f714e309d369e6e2
- https://git.kernel.org/stable/c/172a8a996a337206970467e871dd995ac07640b1
- https://git.kernel.org/stable/c/1927d0bcd5b81e80971bf6b8eba267508bd1c78b
- https://git.kernel.org/stable/c/1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf
- https://git.kernel.org/stable/c/1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152
- https://git.kernel.org/stable/c/3ba9cf69de50e8abed32b448616c313baa4c5712
- https://git.kernel.org/stable/c/797e5371cf55463b4530bab3fef5f27f7c6657a8
- https://git.kernel.org/stable/c/9fe3839588db7519030377b7dee3f165e654f6c5
- https://git.kernel.org/stable/c/a7e89541d05b98c79a51c0f95df020f8e82b62ed
References
- https://git.kernel.org/stable/c/078aabd567de3d63d37d7673f714e309d369e6e2
- https://git.kernel.org/stable/c/172a8a996a337206970467e871dd995ac07640b1
- https://git.kernel.org/stable/c/1927d0bcd5b81e80971bf6b8eba267508bd1c78b
- https://git.kernel.org/stable/c/1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf
- https://git.kernel.org/stable/c/1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152
- https://git.kernel.org/stable/c/3ba9cf69de50e8abed32b448616c313baa4c5712
- https://git.kernel.org/stable/c/797e5371cf55463b4530bab3fef5f27f7c6657a8
- https://git.kernel.org/stable/c/9fe3839588db7519030377b7dee3f165e654f6c5
- https://git.kernel.org/stable/c/a7e89541d05b98c79a51c0f95df020f8e82b62ed
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html