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Filename Latest commit message Latest commit date
Ignat Korchagin 95c4e20adc crypto: akcipher - default implementation for setting a private key 
[ Upstream commit bc155c6c188c2f0c5749993b1405673d25a80389 ]

Changes from v1:
  * removed the default implementation from set_pub_key: it is assumed that
    an implementation must always have this callback defined as there are
    no use case for an algorithm, which doesn't need a public key

Many akcipher implementations (like ECDSA) support only signature
verifications, so they don't have all callbacks defined.

Commit 78a0324f4a ("crypto: akcipher - default implementations for
request callbacks") introduced default callbacks for sign/verify
operations, which just return an error code.

However, these are not enough, because before calling sign the caller would
likely call set_priv_key first on the instantiated transform (as the
in-kernel testmgr does). This function does not have a default stub, so the
kernel crashes, when trying to set a private key on an akcipher, which
doesn't support signature generation.

I've noticed this, when trying to add a KAT vector for ECDSA signature to
the testmgr.

With this patch the testmgr returns an error in dmesg (as it should)
instead of crashing the kernel NULL ptr dereference.

Fixes: 78a0324f4a ("crypto: akcipher - default implementations for request callbacks")
Signed-off-by: Ignat Korchagin <ignat@cloudflare.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-10-26 13:22:45 +02:00
arch powerpc: Fix SPE Power ISA properties for e500v1 platforms 2022-10-26 13:22:45 +02:00
block
certs
crypto crypto: akcipher - default implementation for setting a private key 2022-10-26 13:22:45 +02:00
Documentation iio: ABI: Fix wrong format of differential capacitance channel ABI. 2022-10-26 13:22:34 +02:00
drivers iommu/omap: Fix buffer overflow in debugfs 2022-10-26 13:22:45 +02:00
fs nfsd: Fix a memory leak in an error handling path 2022-10-26 13:22:22 +02:00
include ata: fix ata_id_has_dipm() 2022-10-26 13:22:39 +02:00
init
ipc
kernel cgroup/cpuset: Enable update_tasks_cpumask() on top_cpuset 2022-10-26 13:22:45 +02:00
lib dyndbg: let query-modname override actual module name 2022-10-26 13:22:37 +02:00
LICENSES
mm mm: pagewalk: Fix race between unmap and page walker 2022-10-15 07:54:36 +02:00
net once: add DO_ONCE_SLOW() for sleepable contexts 2022-10-26 13:22:27 +02:00
samples
scripts selinux: use "grep -E" instead of "egrep" 2022-10-26 13:22:21 +02:00
security efi: Correct Macmini DMI match in uefi cert quirk 2022-10-15 07:54:39 +02:00
sound ALSA: hda/hdmi: Don't skip notification handling during PM operation 2022-10-26 13:22:31 +02:00
tools bpftool: Fix a wrong type cast in btf_dumper_int 2022-10-26 13:22:22 +02:00
usr
virt KVM: Add infrastructure and macro to mark VM as bugged 2022-08-25 11:18:16 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: add Chandan as xfs maintainer for 5.4.y 2022-09-28 11:03:58 +02:00
Makefile Linux 5.4.219 2022-10-17 17:24:32 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.