56 lines
1.7 KiB
Diff
56 lines
1.7 KiB
Diff
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From 8a08c34aad61cb59c977212458bf55f5a81186e8 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= <thomas@t-8ch.de>
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Date: Thu, 2 Mar 2023 15:54:39 +0000
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Subject: [PATCH] libblkid: nvidia_raid: validate checksum
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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See #1843
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Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
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---
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libblkid/src/superblocks/nvidia_raid.c | 12 +++++++++++-
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1 file changed, 11 insertions(+), 1 deletion(-)
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diff --git a/libblkid/src/superblocks/nvidia_raid.c b/libblkid/src/superblocks/nvidia_raid.c
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index 35c663c8d..f59a0e100 100644
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--- a/libblkid/src/superblocks/nvidia_raid.c
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+++ b/libblkid/src/superblocks/nvidia_raid.c
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@@ -27,6 +27,14 @@ struct nv_metadata {
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#define NVIDIA_SUPERBLOCK_SIZE 120
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+static int nvraid_verify_checksum(blkid_probe pr, const struct nv_metadata *nv)
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+{
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+ uint32_t csum = le32_to_cpu(nv->chksum);
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+ for (size_t i = 0; i < le32_to_cpu(nv->size); i++)
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+ csum += le32_to_cpu(((uint32_t *) nv)[i]);
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+ return blkid_probe_verify_csum(pr, csum, le32_to_cpu(nv->chksum));
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+}
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+
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static int probe_nvraid(blkid_probe pr,
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const struct blkid_idmag *mag __attribute__((__unused__)))
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{
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@@ -42,7 +50,7 @@ static int probe_nvraid(blkid_probe pr,
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nv = (struct nv_metadata *)
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blkid_probe_get_buffer(pr,
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off,
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- sizeof(struct nv_metadata));
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+ NVIDIA_SUPERBLOCK_SIZE);
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if (!nv)
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return errno ? -errno : 1;
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@@ -50,6 +58,8 @@ static int probe_nvraid(blkid_probe pr,
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return 1;
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if (le32_to_cpu(nv->size) * 4 != NVIDIA_SUPERBLOCK_SIZE)
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return 1;
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+ if (!nvraid_verify_checksum(pr, nv))
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+ return 1;
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if (blkid_probe_sprintf_version(pr, "%u", le16_to_cpu(nv->version)) != 0)
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return 1;
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if (blkid_probe_set_magic(pr, off, sizeof(nv->vendor),
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--
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2.27.0
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