In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsThere is no fixed version for RHEL:8
kernel-rt-core
.
Note: Versions mentioned in the description apply only to the upstream kernel-rt-core
package and not the kernel-rt-core
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: don't skip expired elements during walk
There is an asymmetry between commit/abort and preparation phase if the following conditions are met:
In this case, following sequence is problematic:
If E has already expired in 1), it will be ignored during list walk, so its use count won't have been changed.
Then, when set is culled, ->destroy callback will zap the element via nf_tables_set_elem_destroy(), but this function is only safe for elements that have been deactivated earlier from the preparation phase: lack of earlier deactivate removes the element but leaks the chain use count, which results in a WARN splat when the chain gets removed later, plus a leak of the nft_chain structure.
Update pipapo_get() not to skip expired elements, otherwise flush command reports bogus ENOENT errors.