bccabcf0bd
CVE-2025-15279 GUtils BMP File Parsing Heap-based Buffer Overflow - Resolves: RHEL-138228 CVE-2025-15275 SFD File Parsing Heap-based Buffer Overflow - Resolves: RHEL-138158 CVE-2025-15269 SFD File Parsing Use-After-Free
36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
From a0eedb850e1216cece0f9be61bfd45ddfc4a719d Mon Sep 17 00:00:00 2001
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From: Ahmet Furkan Kavraz <kavraz@amazon.com>
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Date: Fri, 9 Jan 2026 13:39:17 +0000
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Subject: [PATCH] Fix CVE-2025-15279: Move bounds check inside cnt >= 3 block
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Move the bounds check to inside the 'if (cnt >= 3)' block. This fixes
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the issue where cnt == 0, cnt == 1, and cnt == 2 require different ii
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calculations (end-of-line, end-of-bitmap, delta) and the bounds check
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before the conditional would incorrectly reject valid operations.
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CVE-2025-15279
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CVSS: 7.8 (High)
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ZDI-CAN-27517
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---
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gutils/gimagereadbmp.c | 6 +++---
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1 file changed, 3 insertions(+), 3 deletions(-)
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diff --git a/gutils/gimagereadbmp.c b/gutils/gimagereadbmp.c
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index 133336787c..ad365158cc 100644
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--- a/gutils/gimagereadbmp.c
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+++ b/gutils/gimagereadbmp.c
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@@ -190,10 +190,10 @@ static int readpixels(FILE *file,struct bmpheader *head) {
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head->byte_pixels[ii++] = ch;
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} else {
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cnt = getc(file);
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- if (cnt < 0 || ii + cnt > head->height * head->width) {
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- return 0;
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- }
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if ( cnt>= 3 ) {
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+ if (ii + cnt > head->height * head->width) {
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+ return 0;
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+ }
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int odd = cnt&1;
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while ( --cnt>=0 )
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head->byte_pixels[ii++] = getc(file);
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