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authorYuli Wang <wangyuli@uniontech.com>2025-02-13 12:02:40 +0800
committerHuacai Chen <chenhuacai@loongson.cn>2025-02-13 12:02:40 +0800
commit6287f1a8c16138c2ec750953e35039634018c84a (patch)
tree7a1eb325bfca1266fa967bad1dff386c0c91fd4a
parentLoongArch: Remove the deprecated notifier hook mechanism (diff)
downloadwireguard-linux-6287f1a8c16138c2ec750953e35039634018c84a.tar.xz
wireguard-linux-6287f1a8c16138c2ec750953e35039634018c84a.zip
LoongArch: csum: Fix OoB access in IP checksum code for negative lengths
Commit 69e3a6aa6be2 ("LoongArch: Add checksum optimization for 64-bit system") would cause an undefined shift and an out-of-bounds read. Commit 8bd795fedb84 ("arm64: csum: Fix OoB access in IP checksum code for negative lengths") fixes the same issue on ARM64. Fixes: 69e3a6aa6be2 ("LoongArch: Add checksum optimization for 64-bit system") Co-developed-by: Wentao Guan <guanwentao@uniontech.com> Signed-off-by: Wentao Guan <guanwentao@uniontech.com> Signed-off-by: Yuli Wang <wangyuli@uniontech.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to '')
-rw-r--r--arch/loongarch/lib/csum.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/loongarch/lib/csum.c b/arch/loongarch/lib/csum.c
index a5e84b403c3b..df309ae4045d 100644
--- a/arch/loongarch/lib/csum.c
+++ b/arch/loongarch/lib/csum.c
@@ -25,7 +25,7 @@ unsigned int __no_sanitize_address do_csum(const unsigned char *buff, int len)
const u64 *ptr;
u64 data, sum64 = 0;
- if (unlikely(len == 0))
+ if (unlikely(len <= 0))
return 0;
offset = (unsigned long)buff & 7;