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Description of problem:

Curl segfaults in our CI setup after updating everything to the latest rhel-7-9 release.

Most notable upgrade related to curl was: nss (3.67.0-4.el7_9 -> 3.79.0-2.el7_9)

Version-Release number of selected component (if applicable):

curl-7.29.0-59.el7_9.1.x86_64
nss-3.79.0-2.el7_9.x86_64

A coredupm and backtrace is available in the link under additional information.

How reproducible:

Always in our CI setup.

Steps to Reproduce:

1. Execute curl with an custom CA TLS certificate

Actual results:

+ curl --insecure -s https://10.111.112.100:8443/candlepin
sh: line 3:  1601 Segmentation fault      (core dumped) curl --insecure -s https://10.111.112.100:8443/candlepin

Expected results:

curl should not segfault

Additional info:

https://github.com/cockpit-project/bots/pull/3487#issuecomment-1172224587

Sounds like a regression in NSS.  Bob, are you aware of any related change in the recent 7.9.z update of NSS?

The backtrace is available here:

    https://github.com/cockpit-project/bots/pull/3487#issuecomment-1172224587

Hmm, that backtrace matches a known bug that should be fixed in the -2 release of NSS.

Looking closer at the backtrace, it's the same kind of issue that was fixed in -2, but a different path. This is clearly an NSS bug, and will need a patch in RHEL 7.9 (Probably in RHEL-8 and RHEL-9 if another application triggers the curl path for this bug, but curl doesn't use NSS on those platforms).

Thank you for taking this over, Bob!

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (nss, nss-softokn, nss-util, and nspr bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:6712