fix: CVE-2026-50593 integer underflow in slotat macro#3
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TAG Bot TAG: 1.3.14-2deepin1 |
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[APPROVALNOTIFIER] This PR is NOT APPROVED This pull-request has been approved by: The full list of commands accepted by this bot can be found here. DetailsNeeds approval from an approver in each of these files:Approvers can indicate their approval by writing |
UTsweetyfish
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Jun 9, 2026
| @@ -1,3 +1,13 @@ | |||
| graphite2 (1.3.14-2+deepin1) unstable; urgency=medium | |||
UTsweetyfish
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Jun 9, 2026
| prior to the slotmap. Add upstream patch to add bounds checking to | ||
| the slotat macro. | ||
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| -- 胡登 <ut000081@golf66work> Tue, 09 Jun 2026 09:48:53 +0800 |
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Crafted Graphite actions can induce an integer underflow in the slotat macro, leading to an out-of-bounds write prior to the slotmap. Add upstream patch to add bounds checking to the slotat macro. Co-Authored-By: hudeng <hudeng@deepin.org> Generated-By: deepseek-v4-flash
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Summary
CVE-2026-50593: Graphite before 1.3.15 has an integer underflow and resultant out-of-bounds write via Graphite actions, because slotat does not ensure that an offset is within the allowed slot-map range.
Changes
slotatmacro insrc/inc/opcodes.hPatch
Upstream commit: silnrsi/graphite@ad78c6b