The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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kernel-doc
.
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package and not the kernel-doc
package as distributed by RHEL
.
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for RHEL:8
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
icmp: change the order of rate limits
ICMP messages are ratelimited :
After the blamed commits, the two rate limiters are applied in this order:
host wide ratelimit (icmp_global_allow())
Per destination ratelimit (inetpeer based)
In order to avoid side-channels attacks, we need to apply the per destination check first.
This patch makes the following change :
icmp_global_allow() checks if the host wide limit is reached. But credits are not yet consumed. This is deferred to 3)
The per destination limit is checked/updated. This might add a new node in inetpeer tree.
icmp_global_consume() consumes tokens if prior operations succeeded.
This means that host wide ratelimit is still effective in keeping inetpeer tree small even under DDOS.
As a bonus, I removed icmp_global.lock as the fast path can use a lock-free operation.