1ae04e3511
* gnu/packages/patches/vim-CVE-2017-5953.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/vim.scm (vim)[source]: Use it.
25 lines
710 B
Diff
25 lines
710 B
Diff
Fix CVE-2017-5953:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5953
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https://groups.google.com/forum/#!topic/vim_dev/t-3RSdEnrHY
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Patch adapted from upstream commit, correcting the transcription error
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in the bounds check:
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https://github.com/vim/vim/commit/399c297aa93afe2c0a39e2a1b3f972aebba44c9d
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diff --git a/src/spellfile.c b/src/spellfile.c
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index c7d87c6..8b1a3a6 100644
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--- a/src/spellfile.c
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+++ b/src/spellfile.c
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@@ -1595,6 +1595,9 @@ spell_read_tree(
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len = get4c(fd);
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if (len < 0)
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return SP_TRUNCERROR;
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+ if (len >= 0x3fffffff)
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+ /* Invalid length, multiply with sizeof(int) would overflow. */
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+ return SP_FORMERROR;
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if (len > 0)
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{
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/* Allocate the byte array. */
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