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proc/devname.c: Prevent off-by-one overflow in dev_to_tty().

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Qualys Security Advisory 1970-01-01 00:00:00 +00:00 committed by Craig Small
parent 9f59bd5c52
commit 730bdc33e7
1 changed files with 1 additions and 1 deletions
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proc/devname.c
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@ -348,7 +348,7 @@ abbrev:
if((flags&ABBREV_TTY) && !strncmp(tmp,"tty", 3) && tmp[3]) tmp += 3; if((flags&ABBREV_TTY) && !strncmp(tmp,"tty", 3) && tmp[3]) tmp += 3;
if((flags&ABBREV_PTS) && !strncmp(tmp,"pts/", 4) && tmp[4]) tmp += 4; if((flags&ABBREV_PTS) && !strncmp(tmp,"pts/", 4) && tmp[4]) tmp += 4;
/* gotta check before we chop or we may chop someone else's memory */ /* gotta check before we chop or we may chop someone else's memory */
if(chop + (unsigned long)(tmp-buf) <= sizeof buf) if(chop + (unsigned long)(tmp-buf) < sizeof buf)
tmp[chop] = '\0'; tmp[chop] = '\0';
/* replace non-ASCII characters with '?' and return the number of chars */ /* replace non-ASCII characters with '?' and return the number of chars */
for(;;){ for(;;){