CVE-2026-74464

Summary

In the Linux kernel, the following vulnerability has been resolved:

net: openvswitch: fix skb leak on flow key update failure during ct

ovs_ct_execute() always steals or frees the skb on failure while ovs_flow_key_update() does not. So, if it fails and we return right away, the skb ends up leaked.

Fix that by breaking instead and letting the common error handling code at the bottom of the loop to free the skb properly.

This is a very unlikely scenario as it requires the packet to become unparseable by applying a set of actions on a previously parseable skb, but should be fixed nevertheless.

Reported by Sashiko.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxec0d043d05e6e3c0c2fac5de922c800c027c6386 < 736e972f3f8a304158345223ac6e816166a467ceaffected
LinuxLinuxec0d043d05e6e3c0c2fac5de922c800c027c6386 < e84dfaac50aab45ad8c670da43e3aa1f97bd2a41affected
LinuxLinuxec0d043d05e6e3c0c2fac5de922c800c027c6386 < e0ba8eaef2a0d02a7a485e6a7157e47272b65ceaaffected
LinuxLinuxec0d043d05e6e3c0c2fac5de922c800c027c6386 < 393f3c72600ab6721d732a0ab245bc896c5b28fcaffected
LinuxLinuxec0d043d05e6e3c0c2fac5de922c800c027c6386 < bc62e843bc48f933da765ce47079fd992e535794affected
LinuxLinux4.3affected
LinuxLinux0 < 4.3unaffected
LinuxLinux6.6.151 <= 6.6.*unaffected
LinuxLinux6.12.103 <= 6.12.*unaffected
LinuxLinux6.18.44 <= 6.18.*unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2-rc6 <= *unaffected

Weaknesses

References