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Tracker / CVE-2023-52480

CVE-2023-52480

Critical 9.8

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.

Affected products and versions

linux linux_kernel
linux linux_kernel · 5.15 → 5.15.145
linux linux_kernel · 5.16 → 6.1.57
linux linux_kernel · 6.2 → 6.5.7

Analysis

This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.

References