Show threadd@nny disc@ mc²Mar 22

this fucking guy thinks he's really cute https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git because he puts his work on filesystem shit in the same clone url. i think master seems to have more than keys-next but i'm not sure

he's a REALLY funny guy too

git show 645427b7a6c59e0074df29bf939aec2e9d6f2819
commit 645427b7a6c59e0074df29bf939aec2e9d6f2819
Author: David Howells <[email protected]>
Date: Wed Dec 17 09:42:22 2025 +0000

cifs: SMB1 split: Separate out SMB1 decls into smb1proto.h

Separate out SMB1 declarations scriptedly into smb1proto.h. Script below:

#!/usr/bin/perl -w
use strict;

perl? you think perl is enough to stop me?

kernel/git/dhowells/linux-fs.git - VFS and Filesystem bits

Show threadd@nny disc@ mc²Mar 22
git show 645427b7a6c59e0074df29bf939aec2e9d6f2819 | wc -l
1049

sir i use emacs not sure if you've heard of it we just added package-review for people like you

here's some really representative stuff that was what turned me on to the possibility that he was overreaching in the crypto api. i think this was when i realized it was on master

GIT_PAGER='grep -F -C 3 OPENSSL_VERSION_NUMBER' git show 0ad9a71933e73c8a2af101d28e9a1dc35bae02d5
#include <openssl/pem.h>
#include <openssl/err.h>
-#if OPENSSL_VERSION_MAJOR >= 3
+#if OPENSSL_VERSION_NUMBER >= 0x30000000L
# define USE_PKCS11_PROVIDER
# include <openssl/provider.h>
# include <openssl/store.h>

this is word for word the cpython playbook. i spent so many hours trying to parse what the hell was happening with openssl cause i didn't change anything. oh man. here's an example of a change you should not be seeing someone make to cryptographic apis in ring 0
[image]

Show threadd@nny disc@ mc²Mar 22
if you see that hexadecimal openssl version number in a diff oh man your life is about to get a lot worse
Show threadd@nny disc@ mc²Mar 22

https://github.com/python/cpython/blob/8d21aa21f2cbc6d50aab3f420bb23be1d081dac4/setup.py#L884-L922 this is why cpython 2.7 up to 3.6 won't build with newer openssl

# find out which version of OpenSSL we have
openssl_ver = 0
openssl_ver_re = re.compile(
'^\s*#\s*define\s+OPENSSL_VERSION_NUMBER\s+(0x[0-9a-fA-F]+)' )


# look for the openssl version header on the compiler search path.
opensslv_h = find_file('openssl/opensslv.h', [],
inc_dirs + search_for_ssl_incs_in)
if opensslv_h:
name = os.path.join(opensslv_h[0], 'openssl/opensslv.h')
if host_platform == 'darwin' and is_macosx_sdk_path(name):
name = os.path.join(macosx_sdk_root(), name[1:])
try:
incfile = open(name, 'r')
for line in incfile:
m = openssl_ver_re.match(line)
if m:
openssl_ver = eval(m.group(1))
except IOError, msg:
print "IOError while reading opensshv.h:", msg
pass


min_openssl_ver = 0x00907000
have_any_openssl = ssl_incs is not None and ssl_libs is not None
have_usable_openssl = (have_any_openssl and
openssl_ver >= min_openssl_ver)


if have_any_openssl:
if have_usable_openssl:
# The _hashlib module wraps optimized implementations
# of hash functions from the OpenSSL library.
exts.append( Extension('_hashlib', ['_hashopenssl.c'],
include_dirs = ssl_incs,
library_dirs = ssl_libs,
libraries = ['ssl', 'crypto']) )
else:
print ("warning: openssl 0x%08x is too old for _hashlib" %
openssl_ver)
missing.append('_hashlib')
Show threadd@nny disc@ mc²Mar 22

that is regex matching on the content of a c header file....and!

print ("warning: openssl 0x%08x is too old for _hashlib" %
openssl_ver)

"too old". sicko shit

Show threadd@nny disc@ mc²Mar 22
i just thought to check git blame and ahahahaahahahahahaahahahahaahahah
Show threadd@nny disc@ mc²Mar 22

so then you find the commit that set it off

git show 91db696adea4d76017b1e1f45915a5cbf04e8da3
commit 91db696adea4d76017b1e1f45915a5cbf04e8da3
Author: David Howells <[email protected]>
Date: Mon Jan 26 11:46:58 2026 +0000

pkcs7: Allow authenticatedAttributes for ML-DSA

Allow the rejection of authenticatedAttributes in PKCS#7 (signedAttrs in
CMS) to be waived in the kernel config for ML-DSA when used for module
signing. This reflects the issue that openssl < 4.0 cannot do this and
openssl-4 has not yet been released.

This does not permit RSA, ECDSA or ECRDSA to be so waived (behaviour
unchanged).

(1) when people blame a project for not having functionality that's one thing
(2) when this fuckin guy says yeah backdoor in the kernel sounds like the right way to solve this that's another thing
(3) READ this shit "Allow authenticatedAttributes" => "Allow the rejection of authenticatedAttributes"
(4) WHEN USED FOR MODULE SIGNING!!!!!!!!!!

(5) oh i bet i'm about to see some behaviour that's so unchanged

Show threadd@nny disc@ mc²Mar 22
oh hey reproducible builds had a different thing they were doing which required the kernel to disable signatures https://lwn.net/Articles/1012946/ sorry for insulting you by assuming a google plant was the worst thing you could be
Hash-based module integrity checking

On January 20, Thomas Weißschuh shared a new patch set implementing an alternate method for c [...]

LWN.net
Show threadd@nny disc@ mc²Mar 22
it's reproducible when you do it and i don't make any tooling to help you with it
Show threadd@nny disc@ mc²Mar 22

It's tempting to search for a clever cryptographic solution, but nobody has yet proposed one.

not a cryptographic problem, fuckboy. diffoscope is the problem. 'oh i can calculate granular diffs but can't ignore a specified list of files"

Show threadd@nny disc@ mc²Mar 22
+config PKCS7_WAIVE_AUTHATTRS_REJECTION_FOR_MLDSA
+ bool "Waive rejection of authenticatedAttributes for ML-DSA"
+ depends on PKCS7_MESSAGE_PARSER
+ depends on CRYPTO_MLDSA
+ help
+ Due to use of CMS_NOATTR with ML-DSA not being supported in
+ OpenSSL < 4.0 (and thus any released version), enabling this
+ allows authenticatedAttributes to be used with ML-DSA for
+ module signing. Use of authenticatedAttributes in this
+ context is normally rejected.

why is this considered a normal thing to push

Use of authenticatedAttributes in this context is normally rejected.

do people think when they pull in kernel kconfig they learn about new ways to hack people and then try to run this and get hacked

Show threadd@nny disc@ mc²Mar 22

do you think linus has done the full kconfig cannonball run recently

i have

Show threadd@nny disc@ mc²Mar 22

insane shit

+#ifdef CONFIG_PKCS7_WAIVE_AUTHATTRS_REJECTION_FOR_MLDSA
+ bool authattrs_rej_waivable; /* T if authatts rejection can be waived */
+#endif

"authatts" what is the purpose of this typo besides signaling a typo

Show threadd@nny disc@ mc²Mar 22

this one is low-effort. get a real job

git show 965e9a2cf23b066d8bdeb690dff9cd7089c5f667
commit 965e9a2cf23b066d8bdeb690dff9cd7089c5f667 (tag: keys-next-20260206, dhowells/keys-next)
Author: David Howells <[email protected]>
Date: Thu Feb 5 13:02:41 2026 +0000

pkcs7: Change a pr_warn() to pr_warn_once()

Only display the "PKCS7: Waived invalid module sig (has authattrs)" once.

Suggested-by: Lenny Szubowicz <[email protected]>
Signed-off-by: David Howells <[email protected]>
Tested-by: Lenny Szubowicz <[email protected]>
cc: Lukas Wunner <[email protected]>
cc: Ignat Korchagin <[email protected]>
cc: Jarkko Sakkinen <[email protected]>
cc: Stephan Mueller <[email protected]>
cc: Eric Biggers <[email protected]>
cc: Herbert Xu <[email protected]>
cc: [email protected]
cc: [email protected]

diff --git a/crypto/asymmetric_keys/pkcs7_verify.c b/crypto/asymmetric_keys/pkcs7_verify.c
index 519eecfe6778..474e2c1ae21b 100644
--- a/crypto/asymmetric_keys/pkcs7_verify.c
+++ b/crypto/asymmetric_keys/pkcs7_verify.c
@@ -427,7 +427,7 @@ int pkcs7_verify(struct pkcs7_message *pkcs7,
if (pkcs7->have_authattrs) {
#ifdef CONFIG_PKCS7_WAIVE_AUTHATTRS_REJECTION_FOR_MLDSA
if (pkcs7->authattrs_rej_waivable) {
- pr_warn("Waived invalid module sig (has authattrs)\n");
+ pr_warn_once("Waived invalid module sig (has authattrs)\n");
break;
}
#endif
Show threadd@nny disc@ mc²Mar 22
cloudflare is expected, but linux-crypto is not
Show threadd@nny disc@ mc²Mar 22
thanks lenny for testing
Show threadd@nny disc@ mc²Mar 22
that's definitely not all i saw but it's all that's from the one branch. then he throws in several weeks worth of other work on cifs. TWO FUCKING PERL SCRIPTS IN THE COMMIT MESSAGES yeah that's something normal to see
Show threadd@nny disc@ mc²Mar 22
mr president a third perl script has hit the git log
Show threadd@nny disc@ mc²Mar 22
ah! i had forgotten that git lets you time travel
........hence the linus email..........
anyway this is all still up of course
Show threadd@nny disc@ mc²Mar 22
i'm upset about linus
Show threadd@nny disc@ mc²Mar 22
he was mean to an incredibly kind and devoted maintainer who cares........more than him
Show threadd@nny disc@ mc²Mar 22

this is the one that had me reading that brain destroying nist spec

git show f3eccecd782dbaf33d5ad0d1fd22ea277300acdb
commit f3eccecd782dbaf33d5ad0d1fd22ea277300acdb
Author: David Howells <[email protected]>
Date: Wed Jan 21 12:41:42 2026 +0000

pkcs7: Allow the signing algo to do whatever digestion it wants itself

this one is SO close to sounding like a real commit message. except for all the specifics

Allow the data to be verified in a PKCS#7 or CMS message to be passed
directly to an asymmetric cipher algorithm (e.g. ML-DSA) if it wants to do
whatever passes for hashing/digestion itself.

so GODDAMN pissed he would create a capability that does not exist like this

this is, btw, one intended result of NIST's document that frames a "signature" as distinct from "hashing"

these people don't deserve to work for the government

The normal digestion of the
data is then skipped as that would be ignored unless another signed info in
the message has some other algorithm that needs it.

The normal digestion of the data is then skipped

nope! nope. not something that you would ever allow in the real world

Show threadd@nny disc@ mc²Mar 22

Note that whilst ML-DSA does allow for an "external mu", CMS doesn't yet
have that standardised.

i didn't actually spend any time looking this up because i assumed it was completely made up

Show threadd@nny disc@ mc²Mar 22
this shit is just funny. no, that's not how any of this works, why is this on master
Show threadd@nny disc@ mc²Mar 22

no fucking way am i adding an early return 0 to my real crypto because someone thinks quantum computing is real and can hurt you. pascal's wager

+ if (!sinfo->authattrs && sig->algo_takes_data) {
+ /* There's no intermediate digest and the signature algo
+ * doesn't want the data prehashing.
+ */
+ sig->m = (void *)pkcs7->data;
+ sig->m_size = pkcs7->data_len;
+ sig->m_free = false;
+ return 0;
+ }
+
Show threadd@nny disc@ mc²Mar 22
i guess there's another problem which is that ML-DSA most definitely does not do a checksum for you. symmetric and asymmetric crypto are not like easy <=> hard
Show threadd@nny disc@ mc²Mar 22
it's called ML because it uses machine learning, so it was developed by an AI
Show threadd@nny disc@ mc²Mar 22

oh yeah this is where i started screaming and saying this is all completely insane shit to be doing in the kernel

this would be headline on lwn if it was in a gnu project

Show threadd@nny disc@ mc²Mar 22
+ if (!sinfo->sig->m_free) {
+ pr_notice_once("%s: No digest available\n", __func__);
+ return -EINVAL; /* TODO: MLDSA doesn't necessarily calculate an
+ * intermediate digest. */
+ }

none of this shit makes any sense btw. you can just type shit. IETF material

Show threadd@nny disc@ mc²Mar 22

this is i think when i became convinced oh this is for real like this is gonna be released with signed modules upon 7.0

diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h
index bd38ba4d217d..4c5199b20338 100644
--- a/include/crypto/public_key.h
+++ b/include/crypto/public_key.h
@@ -46,6 +46,8 @@ struct public_key_signature {
u8 *m; /* Message data to pass to verifier */
u32 s_size; /* Number of bytes in signature */
u32 m_size; /* Number of bytes in ->m */
+ bool m_free; /* T if ->m needs freeing */
+ bool algo_takes_data; /* T if public key algo operates on data, not a hash */
const char *pkey_algo;
const char *hash_algo;
const char *encoding;

the fuck are you doing in public_key.h asshole?????

Show threadd@nny disc@ mc²Mar 22

i'm going backwards so this comes before the previous

git show f728074f1f577565c97e465652c3d4afb0964013
commit f728074f1f577565c97e465652c3d4afb0964013
Author: David Howells <[email protected]>
Date: Mon Jan 26 09:49:24 2026 +0000

pkcs7, x509: Rename ->digest to ->m

went into a brief fugue state

diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c
index 348966ea2175..2326743310b1 100644
--- a/crypto/asymmetric_keys/asymmetric_type.c
+++ b/crypto/asymmetric_keys/asymmetric_type.c
@@ -593,10 +593,10 @@ static int asymmetric_key_verify_signature(struct kernel_pkey_params *params,
{
struct public_key_signature sig = {
.s_size = params->in2_len,
- .digest_size = params->in_len,
+ .m_size = params->in_len,
.encoding = params->encoding,
.hash_algo = params->hash_algo,
- .digest = (void *)in,
+ .m = (void *)in,
.s = (void *)in2,
};

this is very pythonic

Show threadd@nny disc@ mc²Mar 22
this is a much bigger change than adding the fields
Show threadd@nny disc@ mc²Mar 22
diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h
index 81098e00c08f..bd38ba4d217d 100644
--- a/include/crypto/public_key.h
+++ b/include/crypto/public_key.h
@@ -43,9 +43,9 @@ extern void public_key_free(struct public_key *key);
struct public_key_signature {
struct asymmetric_key_id *auth_ids[3];
u8 *s; /* Signature */
- u8 *digest;
+ u8 *m; /* Message data to pass to verifier */
u32 s_size; /* Number of bytes in signature */
- u32 digest_size; /* Number of bytes in digest */
+ u32 m_size; /* Number of bytes in ->m */
const char *pkey_algo;
const char *hash_algo;
const char *encoding;

no. no. that's not real. that's not a thing

Show threadd@nny disc@ mc²Mar 22

he keeps getting his boys to rizz him up

Signed-off-by: David Howells <[email protected]>
Reviewed-by: Jarkko Sakkinen <[email protected]>
cc: Lukas Wunner <[email protected]>
cc: Ignat Korchagin <[email protected]>
cc: Stephan Mueller <[email protected]>
cc: Eric Biggers <[email protected]>
cc: Herbert Xu <[email protected]>
cc: [email protected]
cc: [email protected]
Show threadd@nny disc@ mc²Mar 22

this one's where he acts like people think that going back through time in git is more invisible?

git show 2c62068ac86bdd917a12eef49ba82ec8b091208b
commit 2c62068ac86bdd917a12eef49ba82ec8b091208b
Author: David Howells <[email protected]>
Date: Wed Jan 21 13:33:37 2026 +0000

x509: Separately calculate sha256 for blacklist

Calculate the SHA256 hash for blacklisting purposes independently of the
signature hash (which may be something other than SHA256).

This is necessary because when ML-DSA is used, no digest is calculated.

Note that this represents a change of behaviour in that the hash used for
the blacklist check would previously have been whatever digest was used
for, say, RSA-based signatures. It may be that this is inadvisable.

This is necessary because when ML-DSA is used, no digest is calculated.

yeah figured that out after wasting an hour of my life

Note that this represents a change of behaviour

yeah i mean the only thing i don't know is why you would say this out loud. i was literally reading the kbuild docs should i keep going

It may be that this is inadvisable.

i can't understand the theory of this process? like you can act like the IETF in the linux kernel? the place where people do close review?

Show threadd@nny disc@ mc²Mar 22
specifically until linus said his maintainers can't change gitignore files during the california surveillance bill during the fascism
Show threadd@nny disc@ mc²Mar 22
do we wanna keep going through cpython and rust
Show threadd@nny disc@ mc²Mar 22
this is fucked up and appears ready to be merged/shipped/whatever. it will make module signing broken and will be just in time to comply with the california surveillance bill. i have stopped thinking it looks fake i can show you so much more shit in cpython
Show threadd@nny disc@ mc²Mar 22
what power structure can stop people from being immediately harmed
Show threadd@nny disc@ mc²Mar 22
i actually would love to chat with people working on build systems about checksum-based invalidation as like an interesting field of research with many avenues to reify the implicit graph structure and not because people are editing public_key.h in ring 0 like it's a fucking joke (it has to be a joke for long enough until it's real)
Show threadd@nny disc@ mc²
yeah man call 911 tell them about module signing and post-quantum-crypto being a ruse to crack ring 0
Mar 22 at 5:29amWeb
Show threadd@nny disc@ mc²Mar 22

noticed another completely insane thing https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit/?h=keys-pqc&id=d3b6dd90e23ef1b57143e60668175ecd890948d1

+config CRYPTO_MLDSA
+ tristate "ML-DSA (Module-Lattice-Based Digital Signature Algorithm)"
+ select CRYPTO_SIG
+ select CRYPTO_LIB_MLDSA
+ help
+ ML-DSA (Module-Lattice-Based Digital Signature Algorithm) (FIPS-204).
+
+ Only signature verification is implemented.
+

actually i guess that's the reason for the hackneyed openssl stuff if openssl can sign or something? but anyway only implementing verification is the weirdest way to implement asymmetric crypto

i was gonna say also the code looks wrong bc how does that implement the brain destroying nist standard but ohohoho https://www.phoronix.com/news/Linux-7.0-Crypto-ML-DSA (note: phoronix posted genuine reiser apologia like two years ago. this is not a link because phoronix is good to link to)

This ML-DSA introduction for signing within the kernel comes in the same release of Linux finally removing SHA-1 module signing support.

it is TEXTBOOK fucking IETF to pull this shit

crypto: Add ML-DSA crypto_sig support - kernel/git/dhowells/linux-fs.git - VFS and Filesystem bits

Show threadd@nny disc@ mc²Mar 22

In addition to that initial ML-DSA support is also AES library updates in the now-merged crypto library pull.

yeah that's a normal way to talk about things in a pull request

Show threadd@nny disc@ mc²Mar 22

lol at other links on that phoronix page

Scoped User Access In Linux 6.19 To Reduce Speculation Barriers & Its Performance Hit

Show threadd@nny disc@ mc²Mar 22

CVE-2026-0915: GNU C Library Fixes A Security Issue Present Since 1996

i will literally become a hurd contributor

Show threadd@nny disc@ mc²Mar 22
i considered feeling helpless but i didn't see what that did for me
Show threadd@nny disc@ mc²Mar 22
i did read IBM and the Holocaust
Show threadd@nny disc@ mc²Mar 22

a single alternate email address for our friend david howells used to write a single commit dated 15 years ago (and from the nearby tags, not likely backdated) weird

git show dcd42ed3ea829aa99cf00d34c61e082ce575b193
Author: David Howells <[email protected]>
AuthorDate: Wed Oct 27 17:28:34 2010 +0100
Show threadd@nny disc@ mc²Mar 22
still so mad i didn't know about --filter=blob:none until today thanks to @Gaelan who is a powerful demigod. the git cli should do this and "commit" changes to file contents. so easy
Show threadd@nny disc@ mc²Mar 22
there's no way openssl is the only way to generate signatures
Show threadd@nny disc@ mc²Mar 22
bet rust has 30 ml-dsa impls all of which inherently cracked by virtue of using cargo
Show threadd@nny disc@ mc²Mar 22

that phoronix page has so many headlines

Ubuntu's AppArmor Hit By Several Security Issues - Can Yield Local Privilege Escalation

"yield"? like if you were to exploit it? there's no sympathetic way to "yield" that. is that super effective or just super cynical

Show threadd@nny disc@ mc²Mar 22
https://xapian.org/ this is a sick as hell project
The Xapian Project

Show threadBredrollMar 22
@hipsterelectron the python hazmat thing has one too
Show threadmoth bitchMar 22
@hipsterelectron I do not have the awakeness to read your entire Odysseus level thread but. God. Is the Linux kernel becoming more and more cooked every day now??? Am I going to become one of those people who uses FreeBSD in protest of Linux?????
Show threadd@nny disc@ mc²Mar 22
@kebokyo i do not believe the BSDs are where resistance lies
Show threadd@nny disc@ mc²Mar 22
@kebokyo hm that was very quick judgement
Show threadd@nny disc@ mc²Mar 22
@kebokyo "the BSDs". that's uneducated
Show threadd@nny disc@ mc²Mar 22
@kebokyo well, the licensing is the thing
Show threadmoth bitchMar 22
@hipsterelectron the joke is right there and I have to hold myself back like Norman Osborne fighting the goblin mask
Show threadmoth bitchMar 22
@hipsterelectron realistically I know I'm probably not brave enough to do this. But this whole thread about potentially dangerous commits being pushed to main on top of the little bit of AI stuff going on... It's not *cooked*, far from it, but the temperature is slooooowly rising and I am scared it will continue to rise