CVE-2019-11477 vulnerability in F5 Networks and Other Products
Published on June 19, 2019
Integer overflow in TCP_SKB_CB(skb)->tcp_gso_segs
Weakness Type
Integer Overflow or Wraparound
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. An integer overflow or wraparound occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may wrap to become a very small or negative number. While this may be intended behavior in circumstances that rely on wrapping, it can have security consequences if the wrap is unexpected. This is especially the case if the integer overflow can be triggered using user-supplied inputs. This becomes security-critical when the result is used to control looping, make a security decision, or determine the offset or size in behaviors such as memory allocation, copying, concatenation, etc.
Products Associated with CVE-2019-11477
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Affected Versions
Linux kernel:- Version 4.4 and below 4.4.182 is affected.
- Version 4.9 and below 4.9.182 is affected.
- Version 4.14 and below 4.14.127 is affected.
- Version 4.19 and below 4.19.52 is affected.
- Version 5.1 and below 5.1.11 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.