SECUFOCUSNOW
Home›CVE index›CVE-2026-52974
Review reviewHigh

CVE-2026-52974

Linux Linux, linux kernel

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 exclus...

CVSS
7.5
EPSS
0.50%
40.0% percentile
CISA KEV
Not listed
Published
2026.06.25
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.50%
Technical severityCVSS 7.5

Vulnerability overview

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 exclus...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 84c61fe1a75b4255df1e1e7c054c9e6d048da417 < 0c9f399b37ce22a5ed94cc51f03ed07ac7f38e32, >= 84c61fe1a75b4255df1e1e7c054c9e6d048da417 < 688f12aa44511dd57e448eb670075c6302ad1dc1, >= 84c61fe1a75b4255df1e1e7c054c9e6d048da417 < 3c405dfa9619e506e75b8e41f8b29a5b99731877, >= 84c61fe1a75b4255df1e1e7c054c9e6d048da417 < 9c54e76f8d6eb11735918777ef0e0509e089557d, >= 84c61fe1a75b4255df1e1e7c054c9e6d048da417 < bd07fe6c38b9e44ff3fc02692a53f095c5cc9afc, >= 84c61fe1a75b4255df1e1e7c054c9e6d048da417 < 58689498ca3384851145a754dbb1d8ed1cf9fb54, >= 6.0, >= 6.0 < 6.1.175, >= 6.2 < 6.6.141, >= 6.7 < 6.12.91, >= 6.13 < 6.18.33, >= 6.19 < 7.0.10, 7.1
Fixed versions
6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-401