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Gyorgy Sarvari
713739da29
Details: https://nvd.nist.gov/vuln/detail/CVE-2025-15270 Pick the patch that mentions this vulnerbaility explicitly in its description. Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com> Signed-off-by: Khem Raj <raj.khem@gmail.com>
46 lines
1.7 KiB
Diff
46 lines
1.7 KiB
Diff
From 99067ccd695619686646905e637993f0654abb41 Mon Sep 17 00:00:00 2001
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From: Gyorgy Sarvari <skandigraun@gmail.com>
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Date: Sat, 31 Jan 2026 21:23:41 +0100
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Subject: [PATCH] Fix CVE-2025-15270: Heap buffer overflow in SFD kern class
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parsing (#5743)
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From: Ahmet Furkan Kavraz <55850855+ahmetfurkankavraz@users.noreply.github.com>
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Fixes: CVE-2025-15270 | ZDI-25-1194 | ZDI-CAN-28563
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Co-authored-by: Ahmet Furkan Kavraz <kavraz@amazon.com>
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CVE: CVE-2025-15270
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Upstream-Status: Backport [https://github.com/fontforge/fontforge/commit/d01333a5bfa2ac4ed698c24b323d02107deacad7]
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Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
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---
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fontforge/sfd.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/fontforge/sfd.c b/fontforge/sfd.c
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index be4220515..d550f02fb 100644
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--- a/fontforge/sfd.c
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+++ b/fontforge/sfd.c
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@@ -8147,6 +8147,10 @@ bool SFD_GetFontMetaData( FILE *sfd,
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for ( i=classstart; i<kc->first_cnt; ++i ) {
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if (kernclassversion < 3) {
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getint(sfd,&temp);
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+ if (temp < 0) {
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+ LogError(_("Corrupted SFD file: Invalid kern class name length %d. Aborting load."), temp);
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+ return false;
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+ }
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kc->firsts[i] = malloc(temp+1); kc->firsts[i][temp] = '\0';
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nlgetc(sfd); /* skip space */
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fread(kc->firsts[i],1,temp,sfd);
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@@ -8164,6 +8168,10 @@ bool SFD_GetFontMetaData( FILE *sfd,
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for ( i=1; i<kc->second_cnt; ++i ) {
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if (kernclassversion < 3) {
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getint(sfd,&temp);
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+ if (temp < 0) {
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+ LogError(_("Corrupted SFD file: Invalid kern class name length %d. Aborting load."), temp);
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+ return false;
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+ }
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kc->seconds[i] = malloc(temp+1); kc->seconds[i][temp] = '\0';
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nlgetc(sfd); /* skip space */
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fread(kc->seconds[i],1,temp,sfd);
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