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082bc48c32
https://review.lineageos.org/q/topic:P_asb_2022-05 https://review.lineageos.org/q/topic:P_asb_2022-06 https://review.lineageos.org/q/topic:P_asb_2022-07 https://review.lineageos.org/q/topic:P_asb_2022-08 https://review.lineageos.org/q/topic:P_asb_2022-09 https://review.lineageos.org/q/topic:P_asb_2022-10 https://review.lineageos.org/q/topic:P_asb_2022-11 https://review.lineageos.org/q/topic:P_asb_2022-12 https://review.lineageos.org/q/topic:P_asb_2023-01 https://review.lineageos.org/q/topic:P_asb_2023-02 https://review.lineageos.org/q/topic:P_asb_2023-03 https://review.lineageos.org/q/topic:P_asb_2023-04 https://review.lineageos.org/q/topic:P_asb_2023-05 https://review.lineageos.org/q/topic:P_asb_2023-06 https://review.lineageos.org/q/topic:P_asb_2023-07 accounted for via manifest change: https://review.lineageos.org/c/LineageOS/android_external_freetype/+/361250 https://review.lineageos.org/q/topic:P_asb_2023-08 accounted for via manifest change: https://review.lineageos.org/c/LineageOS/android_external_freetype/+/364606 accounted for via patches: https://review.lineageos.org/c/LineageOS/android_system_ca-certificates/+/365328 https://review.lineageos.org/q/topic:P_asb_2023-09 https://review.lineageos.org/q/topic:P_asb_2023-10 https://review.lineageos.org/q/topic:P_asb_2023-11 accounted for via patches: https://review.lineageos.org/c/LineageOS/android_system_ca-certificates/+/374916 https://review.lineageos.org/q/topic:P_asb_2023-12 https://review.lineageos.org/q/topic:P_asb_2024-01 https://review.lineageos.org/q/topic:P_asb_2024-02 https://review.lineageos.org/q/topic:P_asb_2024-03 https://review.lineageos.org/q/topic:P_asb_2024-04 Signed-off-by: Tavi <tavi@divested.dev>
42 lines
1.3 KiB
Diff
42 lines
1.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Pierre-Cl=C3=A9ment=20Tosi?= <ptosi@google.com>
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Date: Tue, 13 Sep 2022 16:58:15 +0100
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Subject: [PATCH] libfdt: fdt_path_offset_namelen: Reject empty paths
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Make empty paths result in FDT_ERR_BADPATH.
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Per the specification (v0.4-rc4):
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> The convention for specifying a device path is:
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> /node-name-1/node-name-2/node-name-N
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>
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> The path to the root node is /.
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>
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> A unit address may be omitted if the full path to the
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> node is unambiguous.
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Bug: 246465319
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Test: libfdt_fuzzer # clusterfuzz/testcase-detail/4530863420604416
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Change-Id: I14ab0a074ab994c1f598243d2d5795d2cd9a853a
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(cherry picked from commit 3c28f3e3a1724c288d19f1b1a139cf57bfe1af33)
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(cherry picked from commit d10c84c4bc78e8ebd8c6ebf70126ad3cb0ba1c46)
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Merged-In: I14ab0a074ab994c1f598243d2d5795d2cd9a853a
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---
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libfdt/fdt_ro.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/libfdt/fdt_ro.c b/libfdt/fdt_ro.c
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index 08de2cc..3b65f16 100644
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--- a/libfdt/fdt_ro.c
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+++ b/libfdt/fdt_ro.c
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@@ -188,6 +188,9 @@ int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
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FDT_CHECK_HEADER(fdt);
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+ if (namelen < 1)
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+ return -FDT_ERR_BADPATH;
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+
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/* see if we have an alias */
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if (*path != '/') {
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const char *q = memchr(path, '/', end - p);
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