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CVE-2026-74464

UnknownEPSS 0.17%

Last modified

CVE-2026-74464 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.17%

6.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ec0d043d05e6e3c0c2fac5de922c800c027c6386, < b77126b2915900f69f9fcf5d624a77c8e6d50c31; >= ec0d043d05e6e3c0c2fac5de922c800c027c6386, < 6cc523eaee72c4e91894136cff64946ae9de2cda; >= ec0d043d05e6e3c0c2fac5de922c800c027c6386, < 22e0ca88090d89c128078062186b03bb5fdc4f98; >= ec0d043d05e6e3c0c2fac5de922c800c027c6386, < 736e972f3f8a304158345223ac6e816166a467ce; >= ec0d043d05e6e3c0c2fac5de922c800c027c6386, < e84dfaac50aab45ad8c670da43e3aa1f97bd2a41; >= ec0d043d05e6e3c0c2fac5de922c800c027c6386, < e0ba8eaef2a0d02a7a485e6a7157e47272b65cea; >= ec0d043d05e6e3c0c2fac5de922c800c027c6386, < 393f3c72600ab6721d732a0ab245bc896c5b28fc; >= ec0d043d05e6e3c0c2fac5de922c800c027c6386, < bc62e843bc48f933da765ce47079fd992e535794
LinuxLinux4.3

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74464?
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.
How severe is CVE-2026-74464?
Severity scoring for CVE-2026-74464 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74464?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST