CVE-2023-52480
Linux Kernel race condition
- Published29 Feb 2024
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix race condition between session lookup and expire Thread A + Thread B ksmbd_session_lookup | smb2_sess_setup sess = xa_load | | | xa_erase(&conn->sessions, sess->id); | | ksmbd_session_destroy(sess) --> kfree(sess) | // UAF! | sess->last_active = jiffies | + This patch add rwsem to fix race condition between ksmbd_session_lookup and ksmbd_expire_session.
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HAffected products
Remediation
References
Related CVEs
Recent high-severity vulnerabilities sharing a weakness type.
Frequently asked
Is CVE-2023-52480 being actively exploited?
CVE-2023-52480 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.49%.
How severe is CVE-2023-52480?
CVE-2023-52480 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.49% probability of exploitation.
Which products are affected by CVE-2023-52480?
Affected products include Linux Kernel.
How do I fix CVE-2023-52480?
Upgrade affected software to a fixed version, for example Linux Kernel 5.15.145 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2023-52480 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.