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Description of problem:

curl crashes with segm
Version-Release number of selected component (if applicable):

curl-7.29.0-48.el7

How reproducible:

Always

Steps to Reproduce:
1. curl -s --limit-rate 4m http://example.com/somebigfile
2.
3.

Actual results:

*** Error in `curl': free(): invalid pointer: 0x0000000001ea8270 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x81489)[0x7fe0ef8da489]
curl[0x4085dc]
curl[0x40238e]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7fe0ef87b3d5]
curl[0x402412]
======= Memory map: ========
00400000-00425000 r-xp 00000000 fd:01 202452587                          /usr/bin/curl
00624000-00625000 r--p 00024000 fd:01 202452587                          /usr/bin/curl
00625000-00626000 rw-p 00025000 fd:01 202452587                          /usr/bin/curl
01e9c000-01ee0000 rw-p 00000000 00:00 0                                  [heap]
7fe0e0000000-7fe0e0021000 rw-p 00000000 00:00 0
7fe0e0021000-7fe0e4000000 ---p 00000000 00:00 0

or just

Segmentation Fault


Expected results:

rate limited download.

Additional info:

Testing prior releases indicates it is the -47 to -48 patches that introduced the regression.

Thank you for analyzing the issue!  It seems to be caused by:

    0061-curl-7.29.0-CVE-2018-1000122.patch

The following upstream commit triggers it:

    https://github.com/curl/curl/commit/curl-7_54_0-55-gc2ddc12

... and the following upstream commit fixes it:

    https://github.com/curl/curl/commit/curl-7_54_0-70-ge3ed5cb

I need to review all the commits from upstream pull request #1449:

    https://github.com/curl/curl/pull/1449/commits

... as they seem to be tightly dependent on each other.

I have backported additional 11 upstream commits to make the code consistent again:

https://github.com/curl/curl/commit/curl-7_54_0-58-g87eb8d5b3
https://github.com/curl/curl/commit/curl-7_54_0-60-gb8191e975
https://github.com/curl/curl/commit/curl-7_54_0-61-gf2fadf490
https://github.com/curl/curl/commit/curl-7_54_0-62-g40a074f25
https://github.com/curl/curl/commit/curl-7_54_0-63-g0cab3a394
https://github.com/curl/curl/commit/curl-7_54_0-65-g89cf6f38d
https://github.com/curl/curl/commit/curl-7_54_0-66-gc79f4908d
https://github.com/curl/curl/commit/curl-7_54_0-67-ge40e9d7f0
https://github.com/curl/curl/commit/curl-7_54_0-68-g7ee52c25f
https://github.com/curl/curl/commit/curl-7_54_0-70-ge3ed5cb38
https://github.com/curl/curl/commit/curl-7_54_0-72-geab6732fd

*** Bug 1702828 has been marked as a duplicate of this bug. ***

*** Bug 1710180 has been marked as a duplicate of this bug. ***

*** Bug 1724292 has been marked as a duplicate of this bug. ***

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, 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/RHSA-2019:2181