ACK: [SRU][F][PATCH 0/1] CVE-2024-42229

[Mehmet Basaran]

Acked-by: Mehmet Basaran <mehmet.basaran at canonical.com>

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Bethany Jamison <bethany.jamison at canonical.com> writes:

> [Impact]
>
> crypto: aead,cipher - zeroize key buffer after use
>
> I.G 9.7.B for FIPS 140-3 specifies that variables temporarily holding
> cryptographic information should be zeroized once they are no longer
> needed. Accomplish this by using kfree_sensitive for buffers that
> previously held the private key.
>
> [Fix]
>
> Noble:	pending (6.8.0-46.46)
> Jammy:	released
> Focal:	Backported from linux-5.10.y - ignored context conflict from 
> 	neighboring line, missing commit (e8cfed5); changed 
> 	'kfree_sensitive' to 'kzfree' to fix conflict
> Bionic:	fix sent to esm ML
> Xenial:	fix sent to esm ML
> Trusty:	won't fix
>
> [Test Case]
>
> Compile tested.
>
> [Where problems could occur]
>
> This fix affects those who use AEAD algorithms or single-block cipher 
> operations, an issue with this fix would be visible to the user if 
> sensitive information was found after use on the buffer.
>
> Hailey Mothershead (1):
>   crypto: aead,cipher - zeroize key buffer after use
>
>  crypto/aead.c   | 3 +--
>  crypto/cipher.c | 3 +--
>  2 files changed, 2 insertions(+), 4 deletions(-)
>
> -- 
> 2.34.1
>
>
> -- 
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team
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