CVE-2024-26910

Summary

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

netfilter: ipset: fix performance regression in swap operation

The patch "netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test", commit 28628fa9 fixes a race condition. But the synchronize_rcu() added to the swap function unnecessarily slows it down: it can safely be moved to destroy and use call_rcu() instead.

Eric Dumazet pointed out that simply calling the destroy functions as rcu callback does not work: sets with timeout use garbage collectors which need cancelling at destroy which can wait. Therefore the destroy functions are split into two: cancelling garbage collectors safely at executing the command received by netlink and moving the remaining part only into the rcu callback.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux427deb5ba5661c4ae1cfb35955d2e01bd5f3090a < c7f2733e5011bfd136f1ca93497394d43aa76225affected
LinuxLinuxe7152a138a5ac77439ff4e7a7533448a7d4c260d < a24d5f2ac8ef702a58e55ec276aad29b4bd97e05affected
LinuxLinux8bb930c3a1eacec1b14817f565ff81667c7c5dfa < c2dc077d8f722a1c73a24e674f925602ee5ece49affected
LinuxLinux875ee3a09e27b7adb7006ca6d16faf7f33415aa5 < 653bc5e6d9995d7d5f497c665b321875a626161caffected
LinuxLinux23c31036f862582f98386120aee55c9ae23d7899 < b93a6756a01f4fd2f329a39216f9824c56a66397affected
LinuxLinux28628fa952fefc7f2072ce6e8016968cc452b1ba < 970709a67696b100a57b33af1a3d75fc34b747ebaffected
LinuxLinux28628fa952fefc7f2072ce6e8016968cc452b1ba < 97f7cf1cd80eeed3b7c808b7c12463295c751001affected
LinuxLinuxa12606e5ad0cee8f4ba3ec68561c4d6275d2df57affected
LinuxLinux5.4.264 < 5.4.269affected
LinuxLinux5.10.204 < 5.10.210affected
LinuxLinux5.15.143 < 5.15.149affected
LinuxLinux6.1.68 < 6.1.79affected
LinuxLinux6.6.7 < 6.6.18affected
LinuxLinux4.19.302 < 4.20affected
LinuxLinux6.7affected
LinuxLinux0 < 6.7unaffected
LinuxLinux5.4.269 <= 5.4.*unaffected
LinuxLinux5.10.210 <= 5.10.*unaffected
LinuxLinux5.15.149 <= 5.15.*unaffected
LinuxLinux6.1.79 <= 6.1.*unaffected
LinuxLinux6.6.18 <= 6.6.*unaffected
LinuxLinux6.7.6 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References