Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv It will trigger UAF for rx_kref of j1939_priv as following. cpu0 cpu1 j1939_sk_bind(socket0, ndev0, ...) j1939_netdev_start j1939_sk_bind(socket1, ndev0, ...) j1939_netdev_start j1939_priv_set j1939_priv_get_by_ndev_locked j1939_jsk_add ..... j1939_netdev_stop kref_put_lock(&priv->rx_kref, ...) kref_get(&priv->rx_kref, ...) REFCOUNT_WARN("addition on 0;...") ==================================================== refcount_t: addition on 0; use-after-free. WARNING: CPU: 1 PID: 20874 at lib/refcount.c:25 refcount_warn_saturate+0x169/0x1e0 RIP: 0010:refcount_warn_saturate+0x169/0x1e0 Call Trace: j1939_netdev_start+0x68b/0x920 j1939_sk_bind+0x426/0xeb0 ? security_socket_bind+0x83/0xb0 The rx_kref's kref_get() and kref_put() should use j1939_netdev_lock to protect.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9d71dd0c70099914fcd063135da3c580865e924c before a0e47d2833b4f65e6c799f28c6b636d36b8b936d; affected 9d71dd0c70099914fcd063135da3c580865e924c before 864e77771a24c877aaf53aee019f78619cbcd668; affected 9d71dd0c70099914fcd063135da3c580865e924c before 6e8811707e2df0c6ba920f0cad3a3bca7b42132f; affected 9d71dd0c70099914fcd063135da3c580865e924c before d9d52a3ebd284882f5562c88e55991add5d01586 |
| Linux / Linux | affected 5.4; unaffected 0 before 5.4; unaffected 5.4.156 through 5.4.*; unaffected 5.10.76 through 5.10.*; unaffected 5.14.15 through 5.14.*; unaffected 5.15 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a0e47d2833b4f65e6c799f28c6b636d36b8b936d
- https://git.kernel.org/stable/c/864e77771a24c877aaf53aee019f78619cbcd668
- https://git.kernel.org/stable/c/6e8811707e2df0c6ba920f0cad3a3bca7b42132f
- https://git.kernel.org/stable/c/d9d52a3ebd284882f5562c88e55991add5d01586
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.