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CVE-2026-90225

HIGHCVSS 7.8/10

Last modified

CVE-2026-90225 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: read llcp_sock->local under the socket lock in getsockopt nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and then dereferenced the cached pointer inside the locked region. llcp_sock_bind() assigns and clears llcp_sock->local under the same socket lock, dropping the last reference on its error path. A getsockopt() racing an in-flight bind() can observe the pointer, block on lock_sock(), and then dereference a freed nfc_llcp_local once bind() has unwound. Move the llcp_sock->local read and the NULL check inside the lock_sock(sk) region so bind() cannot mutate or free the pointer between the load and the use..

Description

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: read llcp_sock->local under the socket lock in getsockopt nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and then dereferenced the cached pointer inside the locked region. llcp_sock_bind() assigns and clears llcp_sock->local under the same socket lock, dropping the last reference on its error path. A getsockopt() racing an in-flight bind() can observe the pointer, block on lock_sock(), and then dereference a freed nfc_llcp_local once bind() has unwound. Move the llcp_sock->local read and the NULL check inside the lock_sock(sk) region so bind() cannot mutate or free the pointer between the load and the use.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7, < 56fd158fef20268f48db6cdfe5d722e930134eda; >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7, < 8ba8cec0586727cc135ca4827921fc7b52946d71; >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7, < ed5240bab3468988077fe8bf29b935eaecc9ff89; >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7, < fe65727a4a21b11c18eebae1338482767a897b76; >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7, < 2d8ac24565be85bf56580b87bf1b874d35625eb5; >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7, < 156e65bd29307f5053835bff60bc1ba342fa010f; >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7, < d1b73962675cdc5a58e2707e25b548d8b495fde0; >= 26fd76cab2e61cedc5c25f7151fb31b57ddc53c7, < 36812527052c5bfb1ec6c1e292d67a5bf76b750f
LinuxLinux3.10

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90225?
In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: read llcp_sock->local under the socket lock in getsockopt nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and then dereferenced the cached pointer inside the locked region. llcp_sock_bind() assigns and clears llcp_sock->local under the same socket lock, dropping the last reference on its error path. A getsockopt() racing an in-flight bind() can observe the pointer, block on lock_sock(), and then dereference a freed nfc_llcp_local once bind() has unwound. Move the llcp_sock->local read and the NULL check inside the lock_sock(sk) region so bind() cannot mutate or free the pointer between the load and the use.
How severe is CVE-2026-90225?
CVE-2026-90225 has a CVSS score of 7.8/10 (HIGH severity).
How do I fix CVE-2026-90225?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST