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Prevent OOB access on corrupted msdos directories.
Submitted by: Veo Zhang <veo live com> MFC after: 2 weeks
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parent
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commit
aa031ef4a3
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=326391
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@ -621,7 +621,7 @@ readDosDirSection(int f, struct bootblock *boot, struct fatEntry *fat,
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dirent.name[8] = '\0';
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for (k = 7; k >= 0 && dirent.name[k] == ' '; k--)
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dirent.name[k] = '\0';
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if (dirent.name[k] != '\0')
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if (k < 0 || dirent.name[k] != '\0')
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k++;
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if (dirent.name[0] == SLOT_E5)
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dirent.name[0] = 0xe5;
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