Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: tls: fix strparser anchor skb leak on offload RX setup failure When tls_set_device_offload_rx() fails at tls_dev_add(), the error path calls tls_sw_free_resources_rx() to clean up the SW context that was initialized by tls_set_sw_offload(). This function calls tls_sw_release_resources_rx() (which stops the strparser via tls_strp_stop()) and tls_sw_free_ctx_rx() (which kfrees the context), but never frees the anchor skb that was allocated by alloc_skb(0) in tls_strp_init(). Note that tls_sw_free_resources_rx() is exclusively used for this "failed to start offload" code path, there's no other caller. The leak did not exist before commit 84c61fe1a75b ("tls: rx: do not use the standard strparser"), because the standard strparser doesn't try to pre-allocate an skb. The normal close path in tls_sk_proto_close() handles cleanup by calling tls_sw_strparser_done() (which calls tls_strp_done()) after dropping the socket lock, because tls_strp_done() does cancel_work_sync() and the strparser work handler takes the socket lock.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 before 0c9f399b37ce22a5ed94cc51f03ed07ac7f38e32; affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 before 688f12aa44511dd57e448eb670075c6302ad1dc1; affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 before 3c405dfa9619e506e75b8e41f8b29a5b99731877; affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 before 9c54e76f8d6eb11735918777ef0e0509e089557d; affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 before bd07fe6c38b9e44ff3fc02692a53f095c5cc9afc; affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 before 58689498ca3384851145a754dbb1d8ed1cf9fb54 |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.1.175 through 6.1.*; unaffected 6.6.141 through 6.6.*; unaffected 6.12.91 through 6.12.*; unaffected 6.18.33 through 6.18.*; unaffected 7.0.10 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0c9f399b37ce22a5ed94cc51f03ed07ac7f38e32
- https://git.kernel.org/stable/c/688f12aa44511dd57e448eb670075c6302ad1dc1
- https://git.kernel.org/stable/c/3c405dfa9619e506e75b8e41f8b29a5b99731877
- https://git.kernel.org/stable/c/9c54e76f8d6eb11735918777ef0e0509e089557d
- https://git.kernel.org/stable/c/bd07fe6c38b9e44ff3fc02692a53f095c5cc9afc
- https://git.kernel.org/stable/c/58689498ca3384851145a754dbb1d8ed1cf9fb54
ADP enrichment
No English description supplied.
No references supplied.