CVE-2026-23164: Linux kernel · rocker: fix memory leak in rocker_world_port_post_fini()
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in dce375f4afc348c310d171abcde7ec1499a4c26a : update Linux kernel when convenient.
Data as of 26 Oct 2026, 11:54 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-06-10.
- Patch
- Available – fixed in dce375f4afc348c310d171abcde7ec1499a4c26a, d8723917efda3b4f4c3de78d1ec1e1af015c0be1, d448bf96889f1905e740c554780f5c9fa0440566 +4
Exploitation evidence
Disclosed: evidence found.
CVE published 14 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
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.
References
- git.kernel.org/stable/c/2a3a64d75d2d0727da285749476761ebcad557a3 (opens in a new tab)
- git.kernel.org/stable/c/b11e6f926480ab0939fec44781f28558c54be4e7 (opens in a new tab)
- git.kernel.org/stable/c/8ce2e85889939c02740b4245301aa5c35fc94887 (opens in a new tab)
- git.kernel.org/stable/c/d448bf96889f1905e740c554780f5c9fa0440566 (opens in a new tab)
- git.kernel.org/stable/c/d8723917efda3b4f4c3de78d1ec1e1af015c0be1 (opens in a new tab)
- git.kernel.org/stable/c/dce375f4afc348c310d171abcde7ec1499a4c26a (opens in a new tab)
- git.kernel.org/stable/c/8d7ba71e46216b8657a82ca2ec118bc93812a4d0 (opens in a new tab)