CVE-2023-52480
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.
How to fix
- linux linux_kernel5.15.145, 6.1.57, 6.5.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15 ≤ v < 5.15.145, 5.16 ≤ v < 6.1.57, 6.2 ≤ v < 6.5.7, 6.6 | 5.15.145, 6.1.57, 6.5.7 |
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