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.
References
Configurations
Configuration 1 (hide)
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History
14 Jul 2026, 16:52
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-401 | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* |
|
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/0c9f399b37ce22a5ed94cc51f03ed07ac7f38e32 - Patch | |
| References | () https://git.kernel.org/stable/c/3c405dfa9619e506e75b8e41f8b29a5b99731877 - Patch | |
| References | () https://git.kernel.org/stable/c/58689498ca3384851145a754dbb1d8ed1cf9fb54 - Patch | |
| References | () https://git.kernel.org/stable/c/688f12aa44511dd57e448eb670075c6302ad1dc1 - Patch | |
| References | () https://git.kernel.org/stable/c/9c54e76f8d6eb11735918777ef0e0509e089557d - Patch | |
| References | () https://git.kernel.org/stable/c/bd07fe6c38b9e44ff3fc02692a53f095c5cc9afc - Patch |
28 Jun 2026, 08:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
24 Jun 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-24 17:17
Updated : 2026-07-14 16:52
NVD link : CVE-2026-52974
Mitre link : CVE-2026-52974
CVE.ORG link : CVE-2026-52974
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-401
Missing Release of Memory after Effective Lifetime