CVE-2024-27395

Summary

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

net: openvswitch: Fix Use-After-Free in ovs_ct_exit

Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal of ovs_ct_limit_exit, is not part of the RCU read critical section, it is possible that the RCU grace period will pass during the traversal and the key will be free.

To prevent this, it should be changed to hlist_for_each_entry_safe.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux11efd5cb04a184eea4f57b68ea63dddd463158d1 < 2db9a8c0a01fa1c762c1e61a13c212c492752994affected
LinuxLinux11efd5cb04a184eea4f57b68ea63dddd463158d1 < 589523cf0b384164e445dd5db8d5b1bf97982424affected
LinuxLinux11efd5cb04a184eea4f57b68ea63dddd463158d1 < 35880c3fa6f8fe281a19975d2992644588ca33d3affected
LinuxLinux11efd5cb04a184eea4f57b68ea63dddd463158d1 < 9048616553c65e750d43846f225843ed745ec0d4affected
LinuxLinux11efd5cb04a184eea4f57b68ea63dddd463158d1 < bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1affected
LinuxLinux11efd5cb04a184eea4f57b68ea63dddd463158d1 < eaa5e164a2110d2fb9e16c8a29e4501882235137affected
LinuxLinux11efd5cb04a184eea4f57b68ea63dddd463158d1 < edee0758747d7c219e29db9ed1d4eb33e8d32865affected
LinuxLinux11efd5cb04a184eea4f57b68ea63dddd463158d1 < 5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2affected
LinuxLinux4.18affected
LinuxLinux0 < 4.18unaffected
LinuxLinux4.19.313 <= 4.19.*unaffected
LinuxLinux5.4.275 <= 5.4.*unaffected
LinuxLinux5.10.216 <= 5.10.*unaffected
LinuxLinux5.15.158 <= 5.15.*unaffected
LinuxLinux6.1.90 <= 6.1.*unaffected
LinuxLinux6.6.30 <= 6.6.*unaffected
LinuxLinux6.8.9 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

Additional References

References