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Subject[PATCH 0/1] s390: fix initrd corruption in decompressor with new zstd version
The new version of zstd library integrated in the kernel since v6.2-rc1
contains commit
which introduces a side effect for historical usage of __decompress() function,
i.e. not specifying "out_len" parameter and expecting that no writes beyond
uncompressed kernel image are performed. More details are in follow up fix.

From architectures which claim HAVE_KERNEL_ZSTD, s390 and MIPS use
__decompress() without specifying "out_len". On s390 this leads to
initrd corruption.

I haven't looked in details for MIPS but I've added Thomas as the
maintainer and MIPS list in Cc.

The follow up fix addresses that for s390.

Vasily Gorbik (1):
s390/decompressor: specify __decompress() buf len to avoid overflow

arch/s390/boot/decompressor.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)


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