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Bug 1919215
Summary: | double free in ex_argdelete() when input craft vimscript file | ||||||||
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Product: | [Fedora] Fedora | Reporter: | 1vanChen <houyunsong> | ||||||
Component: | vim | Assignee: | Red Hat Product Security <security-response-team> | ||||||
Status: | CLOSED ERRATA | QA Contact: | |||||||
Severity: | high | Docs Contact: | |||||||
Priority: | unspecified | ||||||||
Version: | rawhide | CC: | gchamoul, mcascell, zdohnal | ||||||
Target Milestone: | --- | ||||||||
Target Release: | --- | ||||||||
Hardware: | All | ||||||||
OS: | Linux | ||||||||
Whiteboard: | |||||||||
Fixed In Version: | vim-8.2.2529-1.fc33 vim-8.2.2541-1.fc33 vim-8.2.2541-1.fc32 | Doc Type: | If docs needed, set a value | ||||||
Doc Text: | Story Points: | --- | |||||||
Clone Of: | Environment: | ||||||||
Last Closed: | 2021-02-20 01:26:01 UTC | Type: | Bug | ||||||
Regression: | --- | Mount Type: | --- | ||||||
Documentation: | --- | CRM: | |||||||
Verified Versions: | Category: | --- | |||||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
Cloudforms Team: | --- | Target Upstream Version: | |||||||
Embargoed: | |||||||||
Attachments: |
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Hi, thank you for reporting the issue! I'll pass the issue to security team and report it upstream. Created attachment 1750766 [details]
reduced poc file
Simplified sample is provided
Please refer to https://bugzilla.redhat.com/show_bug.cgi?id=1919212#c4. FEDORA-2021-164265f25a has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-164265f25a FEDORA-2021-01b3981cc5 has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2021-01b3981cc5 FEDORA-2021-01b3981cc5 has been pushed to the Fedora 32 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-01b3981cc5` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-01b3981cc5 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2021-164265f25a has been pushed to the Fedora 33 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-164265f25a` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-164265f25a See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2021-164265f25a has been pushed to the Fedora 33 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-2021-5be90ab004 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-5be90ab004 FEDORA-2021-fb090f432a has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2021-fb090f432a FEDORA-2021-fb090f432a has been pushed to the Fedora 32 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-fb090f432a` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-fb090f432a See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2021-5be90ab004 has been pushed to the Fedora 33 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-5be90ab004` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-5be90ab004 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2021-5be90ab004 has been pushed to the Fedora 33 stable repository. If problem still persists, please make note of it in this bug report. FEDORA-2021-fb090f432a has been pushed to the Fedora 32 stable repository. If problem still persists, please make note of it in this bug report. |
Created attachment 1749723 [details] poc To Reproduce ```shell vim -u NONE -X -Z -e -s -S poc -c :qa! ``` Debug Info ```shell /src/vim# src/vim -u NONE -X -Z -e -s -S ../poc -c :qa! ================================================================= ==18589==ERROR: AddressSanitizer: attempting double-free on 0x602000009630 in thread T0: #0 0x49733d in free (/src/vim/src/vim+0x49733d) #1 0x6cfd9b in vim_free /src/vim/src/misc2.c:1807:2 #2 0x4cac5e in ex_argdelete /src/vim/src/arglist.c:807:3 #3 0x5d277b in do_one_cmd /src/vim/src/ex_docmd.c:2588:2 #4 0x5cc8b8 in do_cmdline /src/vim/src/ex_docmd.c:1003:17 #5 0x4d14d2 in apply_autocmds_group /src/vim/src/autocmd.c:2109:2 #6 0x4d363d in apply_autocmds /src/vim/src/autocmd.c:1621:12 #7 0x5bd62e in do_ecmd /src/vim/src/ex_cmds.c:2726:6 #8 0x4ca0a2 in do_argfile /src/vim/src/arglist.c:692:6 #9 0x4c9c1d in ex_next /src/vim/src/arglist.c:727:2 #10 0x5d277b in do_one_cmd /src/vim/src/ex_docmd.c:2588:2 #11 0x5cc8b8 in do_cmdline /src/vim/src/ex_docmd.c:1003:17 #12 0x7ec3ee in do_source /src/vim/src/scriptfile.c:1401:5 #13 0x7eb03d in cmd_source /src/vim/src/scriptfile.c:971:14 #14 0x7eaf1e in ex_source /src/vim/src/scriptfile.c:997:2 #15 0x5d277b in do_one_cmd /src/vim/src/ex_docmd.c:2588:2 #16 0x5cc8b8 in do_cmdline /src/vim/src/ex_docmd.c:1003:17 #17 0x5cf181 in do_cmdline_cmd /src/vim/src/ex_docmd.c:592:12 #18 0x9c0df7 in exe_commands /src/vim/src/main.c:3056:2 #19 0x9bfc44 in vim_main2 /src/vim/src/main.c:760:2 #20 0x9bd071 in main /src/vim/src/main.c:412:12 #21 0x7ffff6cba83f in __libc_start_main /build/glibc-e6zv40/glibc-2.23/csu/../csu/libc-start.c:291 #22 0x41d768 in _start (/src/vim/src/vim+0x41d768) 0x602000009630 is located 0 bytes inside of 2-byte region [0x602000009630,0x602000009632) freed by thread T0 here: #0 0x49733d in free (/src/vim/src/vim+0x49733d) #1 0x6cfd9b in vim_free /src/vim/src/misc2.c:1807:2 #2 0x4cac5e in ex_argdelete /src/vim/src/arglist.c:807:3 #3 0x5d277b in do_one_cmd /src/vim/src/ex_docmd.c:2588:2 #4 0x5cc8b8 in do_cmdline /src/vim/src/ex_docmd.c:1003:17 #5 0x4d14d2 in apply_autocmds_group /src/vim/src/autocmd.c:2109:2 #6 0x4d363d in apply_autocmds /src/vim/src/autocmd.c:1621:12 #7 0x4de4c9 in buflist_new /src/vim/src/buffer.c:2215:6 #8 0x4e5012 in buflist_add /src/vim/src/buffer.c:3501:11 #9 0x4c7e54 in alist_add /src/vim/src/arglist.c:188:6 #10 0x4c7cb0 in alist_set /src/vim/src/arglist.c:157:6 #11 0x4c8aa0 in do_arglist /src/vim/src/arglist.c:458:6 #12 0x4c9bc2 in ex_next /src/vim/src/arglist.c:721:10 #13 0x5d277b in do_one_cmd /src/vim/src/ex_docmd.c:2588:2 #14 0x5cc8b8 in do_cmdline /src/vim/src/ex_docmd.c:1003:17 #15 0x7ec3ee in do_source /src/vim/src/scriptfile.c:1401:5 #16 0x7eb03d in cmd_source /src/vim/src/scriptfile.c:971:14 #17 0x7eaf1e in ex_source /src/vim/src/scriptfile.c:997:2 #18 0x5d277b in do_one_cmd /src/vim/src/ex_docmd.c:2588:2 #19 0x5cc8b8 in do_cmdline /src/vim/src/ex_docmd.c:1003:17 #20 0x5cf181 in do_cmdline_cmd /src/vim/src/ex_docmd.c:592:12 #21 0x9c0df7 in exe_commands /src/vim/src/main.c:3056:2 #22 0x9bfc44 in vim_main2 /src/vim/src/main.c:760:2 #23 0x9bd071 in main /src/vim/src/main.c:412:12 #24 0x7ffff6cba83f in __libc_start_main /build/glibc-e6zv40/glibc-2.23/csu/../csu/libc-start.c:291 previously allocated by thread T0 here: #0 0x4975bd in malloc (/src/vim/src/vim+0x4975bd) #1 0x6ce307 in lalloc /src/vim/src/misc2.c:925:11 #2 0x6ce2dd in alloc /src/vim/src/misc2.c:828:12 #3 0x623668 in addfile /src/vim/src/filepath.c:3948:9 #4 0x62203b in gen_expand_wildcards /src/vim/src/filepath.c #5 0x6216ef in expand_wildcards /src/vim/src/filepath.c:3018:14 #6 0x4c89a8 in do_arglist /src/vim/src/arglist.c:443:6 #7 0x4c9bc2 in ex_next /src/vim/src/arglist.c:721:10 #8 0x5d277b in do_one_cmd /src/vim/src/ex_docmd.c:2588:2 #9 0x5cc8b8 in do_cmdline /src/vim/src/ex_docmd.c:1003:17 #10 0x7ec3ee in do_source /src/vim/src/scriptfile.c:1401:5 #11 0x7eb03d in cmd_source /src/vim/src/scriptfile.c:971:14 #12 0x7eaf1e in ex_source /src/vim/src/scriptfile.c:997:2 #13 0x5d277b in do_one_cmd /src/vim/src/ex_docmd.c:2588:2 #14 0x5cc8b8 in do_cmdline /src/vim/src/ex_docmd.c:1003:17 #15 0x5cf181 in do_cmdline_cmd /src/vim/src/ex_docmd.c:592:12 #16 0x9c0df7 in exe_commands /src/vim/src/main.c:3056:2 #17 0x9bfc44 in vim_main2 /src/vim/src/main.c:760:2 #18 0x9bd071 in main /src/vim/src/main.c:412:12 #19 0x7ffff6cba83f in __libc_start_main /build/glibc-e6zv40/glibc-2.23/csu/../csu/libc-start.c:291 SUMMARY: AddressSanitizer: double-free (/src/vim/src/vim+0x49733d) in free ==18589==ABORTING ``` Environment: - version : commit e2edc2ed4a9a229870b1e1811b0ecf045b84e429 - OS: Ubuntu 16.04 Additional context compile argument: ```shell #!/bin/bash -eux export CC="clang-11" export CXX="clang-11++" export LDFLAGS="-fsanitize=address" export CFLAGS="-O1 -g -fsanitize=address -fno-omit-frame-pointer" export CXXFLAGS="-O1 -g -fsanitize=address -fno-omit-frame-pointer" cd /src/vim/ && ./configure --with-features=huge --enable-gui=none && make ``` Credit: 1vanChen of NSFOCUS Security Team