Bug 1652628 - There is an illegal WRITE memory access at caca/file.c:207 (function:caca_file_read )in libcaca latest version.
Summary: There is an illegal WRITE memory access at caca/file.c:207 (function:caca_fil...
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: libcaca (Show other bugs)
(Show other bugs)
Version: rawhide
Hardware: All All
unspecified
urgent
Target Milestone: ---
Assignee: Matthias Saou
QA Contact: Fedora Extras Quality Assurance
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-11-22 13:28 UTC by shuitao gan
Modified: 2018-12-29 14:21 UTC (History)
5 users (show)

Fixed In Version:
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Attachments (Terms of Use)
./img2txt POC7 (30.67 KB, image/bmp)
2018-11-22 13:28 UTC, shuitao gan
no flags Details

Description shuitao gan 2018-11-22 13:28:41 UTC
Created attachment 1507965 [details]
./img2txt POC7

version: libcaca0.99beta19
Summary: 

There is an illegal WRITE memory access at caca/file.c:207 (function:caca_file_read  )in libcaca latest version.

Description:

The asan debug is as follows:

$./img2txt POC7
=================================================================
==91389==ERROR: AddressSanitizer: SEGV on unknown address 0x7ff7361f3f50 (pc 0x7ff642451611 bp 0x7ffeef5624d0 sp 0x7ffeef561c38 T0)
==91389==The signal is caused by a WRITE memory access.
    #0 0x7ff642451610  (/lib/x86_64-linux-gnu/libc.so.6+0xb2610)
    #1 0x7ff642aec6ce  (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x796ce)
    #2 0x7ff6412c3ccf in gzread (/lib/x86_64-linux-gnu/libz.so.1+0x12ccf)
    #3 0x7ff6427a61fa in caca_file_read /home/company/real/libcaca-master/caca/file.c:207
    #4 0x56440379828a in load_image /home/company/real/libcaca-master/src/common-image.c:209
    #5 0x5644037967c7 in main /home/company/real/libcaca-master/src/img2txt.c:171
    #6 0x7ff6423c01c0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x211c0)
    #7 0x564403796f09 in _start (/home/company/real/libcaca-master/install_asan/bin/img2txt+0x2f09)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/lib/x86_64-linux-gnu/libc.so.6+0xb2610) 
==91389==ABORTING

Comment 1 Leonardo Taccari 2018-12-28 22:42:09 UTC
Hello shuitao!
Was this reported upstream?  If not, can you please share this problem also with them?


Thank you!

Comment 2 Henri Salo 2018-12-29 03:29:41 UTC
Reported to upstream https://github.com/cacalabs/libcaca/issues/41

Comment 3 Leonardo Taccari 2018-12-29 14:21:28 UTC
Thank you very much Henri!


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