[pkg-cryptsetup-devel] Security issue (CVE-2021-4122) in cryptsetup 2:2.3.5-1

Yves-Alexis Perez corsac at debian.org
Thu Feb 10 14:54:27 GMT 2022


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On Thu, 2022-02-10 at 09:53 +0100, Guilhem Moulin wrote:
> Unfortunately I only have the d/changelog summary, plus the NEWS entry
> for the truncation issue:
> 
>     This release fixes a key truncation issue for standalone dm-integrity
>     devices using HMAC integrity protection.  For existing such devices
>     with extra long HMAC keys (typically >106 bytes of length, see
>     https://bugs.debian.org/949336#78 for the various corner cases), one
>     might need to manually truncate the key using integritysetup(8)'s
>     `--integrity-key-size` option in order to properly map the device
>     under 2:2.3.7-1+deb11u1 and later.
> 
>     Only standalone dm-integrity devices are affected.  dm-crypt devices,
>     including those using authenticated disk encryption, are unaffected.
> 
> For CVE-2021-4122 one could summarize the upstream advisory at
> https://seclists.org/oss-sec/2022/q1/34 , if you'd like an entry longer
> than d/changelog.

Yeah no problem, I'll craft something from the various sources :)
- -- 
Yves-Alexis
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