Invoking infinite loop on large channel writes in golang.org/x/crypto/ssh
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.5%
exploitation probability
0.5%top 57% of all CVEs
observed exploitation
nono source reports it
When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress. The size comparison now uses int64 to prevent truncation.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
golang.org/x/crypto · golang.org/x/crypto/ssh