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CVE-2026-23164

rocker: fix memory leak in rocker_world_port_post_fini()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.249, 5.15.199, 6.1.162, 6.6.123, 6.12.69, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

In the Linux kernel, the following vulnerability has been resolved: rocker: fix memory leak in rocker_world_port_post_fini() In rocker_world_port_pre_init(), rocker_port->wpriv is allocated with kzalloc(wops->port_priv_size, GFP_KERNEL). However, in rocker_world_port_post_fini(), the memory is only freed when wops->port_post_fini callback is set: if (!wops->port_post_fini) return; wops->port_post_fini(rocker_port); kfree(rocker_port->wpriv); Since rocker_ofdpa_ops does not implement port_post_fini callback (it is NULL), the wpriv memory allocated for each port is never freed when ports are removed. This leads to a memory leak of sizeof(struct ofdpa_port) bytes per port on every device removal. Fix this by always calling kfree(rocker_port->wpriv) regardless of whether the port_post_fini callback exists.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From e420114eef4a3a5025a243b89b0dc343101e3d3c · fixed in 2a3a64d75d2d0727da285749476761ebcad557a3; From e420114eef4a3a5025a243b89b0dc343101e3d3c · fixed in b11e6f926480ab0939fec44781f28558c54be4e7; From e420114eef4a3a5025a243b89b0dc343101e3d3c · fixed in 8ce2e85889939c02740b4245301aa5c35fc94887; From e420114eef4a3a5025a243b89b0dc343101e3d3c · fixed in d448bf96889f1905e740c554780f5c9fa0440566; From e420114eef4a3a5025a243b89b0dc343101e3d3c · fixed in d8723917efda3b4f4c3de78d1ec1e1af015c0be1; From e420114eef4a3a5025a243b89b0dc343101e3d3c · fixed in dce375f4afc348c310d171abcde7ec1499a4c26a; From e420114eef4a3a5025a243b89b0dc343101e3d3c · fixed in 8d7ba71e46216b8657a82ca2ec118bc93812a4d0

  • Linux Linux

    4.6

  • KernelLinux

    From 4.6.0 · fixed in 5.10.249; From 5.11.0 · fixed in 5.15.199; From 5.16.0 · fixed in 6.1.162; From 6.2.0 · fixed in 6.6.123; From 6.7.0 · fixed in 6.12.69; From 6.13.0 · fixed in 6.18.9

References 7

git.kernel.org