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Merge branch 'sixel-fix-double-free-in-set-palette-size'

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Closes #427
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Daniel Eklöf 2021-03-30 11:19:58 +02:00
commit 1b4b64dca7
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2 changed files with 7 additions and 2 deletions
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3
CHANGELOG.md
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@ -34,6 +34,9 @@
* Reverted _"Consumed modifiers are no longer sent to the client * Reverted _"Consumed modifiers are no longer sent to the client
application"_ (https://codeberg.org/dnkl/foot/issues/425). application"_ (https://codeberg.org/dnkl/foot/issues/425).
* Crash caused by a double free originating in `XTSMGRAPHICS` - set
number of color registers
(https://codeberg.org/dnkl/foot/issues/427).
### Security ### Security

6
sixel.c
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@ -1344,8 +1344,10 @@ sixel_colors_set(struct terminal *term, unsigned count)
unsigned new_palette_size = min(max(2, count), SIXEL_MAX_COLORS); unsigned new_palette_size = min(max(2, count), SIXEL_MAX_COLORS);
LOG_DBG("sixel palette size set to %u", new_palette_size); LOG_DBG("sixel palette size set to %u", new_palette_size);
free(term->sixel.palette); free(term->sixel.private_palette);
term->sixel.palette = NULL; free(term->sixel.shared_palette);
term->sixel.private_palette = NULL;
term->sixel.shared_palette = NULL;
term->sixel.palette_size = new_palette_size; term->sixel.palette_size = new_palette_size;
sixel_colors_report_current(term); sixel_colors_report_current(term);