forked from pool/grub2
e016790fe1
- Security fixes and hardenings for boothole 3 / boothole 2022 (bsc#1198581) * 0001-video-Remove-trailing-whitespaces.patch * 0002-loader-efi-chainloader-Simplify-the-loader-state.patch * 0003-commands-boot-Add-API-to-pass-context-to-loader.patch - Fix CVE-2022-28736 (bsc#1198496) * 0004-loader-efi-chainloader-Use-grub_loader_set_ex.patch - Fix CVE-2022-28735 (bsc#1198495) * 0005-kern-efi-sb-Reject-non-kernel-files-in-the-shim_lock.patch * 0006-kern-file-Do-not-leak-device_name-on-error-in-grub_f.patch * 0007-video-readers-png-Abort-sooner-if-a-read-operation-f.patch * 0008-video-readers-png-Refuse-to-handle-multiple-image-he.patch - Fix CVE-2021-3695 (bsc#1191184) * 0009-video-readers-png-Drop-greyscale-support-to-fix-heap.patch - Fix CVE-2021-3696 (bsc#1191185) * 0010-video-readers-png-Avoid-heap-OOB-R-W-inserting-huff-.patch * 0011-video-readers-png-Sanity-check-some-huffman-codes.patch * 0012-video-readers-jpeg-Abort-sooner-if-a-read-operation-.patch * 0013-video-readers-jpeg-Do-not-reallocate-a-given-huff-ta.patch * 0014-video-readers-jpeg-Refuse-to-handle-multiple-start-o.patch - Fix CVE-2021-3697 (bsc#1191186) * 0015-video-readers-jpeg-Block-int-underflow-wild-pointer-.patch * 0016-normal-charset-Fix-array-out-of-bounds-formatting-un.patch - Fix CVE-2022-28733 (bsc#1198460) * 0017-net-ip-Do-IP-fragment-maths-safely.patch * 0018-net-netbuff-Block-overly-large-netbuff-allocs.patch * 0019-net-dns-Fix-double-free-addresses-on-corrupt-DNS-res.patch * 0020-net-dns-Don-t-read-past-the-end-of-the-string-we-re-.patch * 0021-net-tftp-Prevent-a-UAF-and-double-free-from-a-failed.patch * 0022-net-tftp-Avoid-a-trivial-UAF.patch * 0023-net-http-Do-not-tear-down-socket-if-it-s-already-bee.patch OBS-URL: https://build.opensuse.org/request/show/981228 OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=416
43 lines
1.4 KiB
Diff
43 lines
1.4 KiB
Diff
From bbbb410d5d7d29d935e7108c77a0368e4e007a43 Mon Sep 17 00:00:00 2001
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From: Daniel Axtens <dja@axtens.net>
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Date: Tue, 6 Jul 2021 19:19:11 +1000
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Subject: [PATCH 11/32] video/readers/png: Sanity check some huffman codes
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ASAN picked up two OOB global reads: we weren't checking if some code
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values fit within the cplens or cpdext arrays. Check and throw an error
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if not.
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Signed-off-by: Daniel Axtens <dja@axtens.net>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/video/readers/png.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/grub-core/video/readers/png.c b/grub-core/video/readers/png.c
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index d7ed5aa6cf..7f2ba7849b 100644
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--- a/grub-core/video/readers/png.c
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+++ b/grub-core/video/readers/png.c
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@@ -753,6 +753,9 @@ grub_png_read_dynamic_block (struct grub_png_data *data)
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int len, dist, pos;
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n -= 257;
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+ if (((unsigned int) n) >= ARRAY_SIZE (cplens))
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+ return grub_error (GRUB_ERR_BAD_FILE_TYPE,
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+ "png: invalid huff code");
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len = cplens[n];
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if (cplext[n])
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len += grub_png_get_bits (data, cplext[n]);
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@@ -760,6 +763,9 @@ grub_png_read_dynamic_block (struct grub_png_data *data)
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return grub_errno;
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n = grub_png_get_huff_code (data, &data->dist_table);
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+ if (((unsigned int) n) >= ARRAY_SIZE (cpdist))
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+ return grub_error (GRUB_ERR_BAD_FILE_TYPE,
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+ "png: invalid huff code");
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dist = cpdist[n];
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if (cpdext[n])
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dist += grub_png_get_bits (data, cpdext[n]);
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--
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2.34.1
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