Hi Michael, Hi Security Team

So, I've imported the patches into the LTS repo:
https://salsa.debian.org/lts-team/packages/busybox/-/tree/debian/bookworm

I've prepared CVE-2023-39810 on a dedicated branch, so this would be
ready too:
https://salsa.debian.org/lts-team/packages/busybox/-/tree/debian/bookworm-CVE-2023-39810

However, strictly spoken the fix for this CVE changes busybox behaviour,
as directory traversal was "allowed" before and disallowing it is a
behavioral change.

@security team: I still think we should enable the feature (as it has in
unstable already), but I'd like to RFC if this would be OK.

Cheers,
-- 
tobi

On Sun, Feb 01, 2026 at 03:19:10PM +0100, Tobias Frost wrote:
> Hi Michael,
> 
> thanks for the quick reply!
> 
> On Sun, Feb 01, 2026 at 12:17:12AM +0300, Michael Tokarev wrote:
> > On 1/31/26 19:19, Tobias Frost wrote:
> > > Hi Michael,
> > > 
> > > I'm reaching out in regards of updates of busybox in bookworm.
> > > Around a year ago I've uploaded fixes to LTS (bullseye), but
> > > some of the fixed CVEs are currently unfixed in newer releases,
> > > especially in bookworm and I'd like to close this gap.
> > > 
> > > As "busybox" is listed as one where the maintainers would like
> > > to be involved in LTS updates, I'm reaching out to coordinate this
> > > update.
> > > 
> > > The plan would be to at least close the gap in bookworm and at least fix
> > > everything fixed in bullseye.
> > > What do you think, how should be approach this issue? I can, as part of
> > > the LTS effort, take a look at bullseye, but if you prefer to take a
> > > look yourself that would be appreciated too.
> > 
> > Please definitely do the fixes in bookworm if you're energetic enough
> > to fix them.
> > 
> > Which fixes are they, anyway?  Are you talking about fixes to the 4 CVEs
> > listed for bookworm but not for trixie, -- CVE-2022-48174 (ash),
> > CVE-2023-42363 (uaf xasprintf), CVE-2023-42364 (uaf awk pattern),
> > CVE-2023-42365 (uaf awk copyvar)?  Or is it something else?
> > 
> > Or do you think about the other vulns still listed for trixie and sid too?
> 
> The bookworm update should target at least
> CVE-2022-48174, CVE-2023-42364, CVE-2023-42365 - those are the "gap"
> between bullseye and bookworm.
> It won't hurt to fix CVE-2023-42363, too, as thise one is already fixed
> in trixie and newer.
> 
> So I will primarly target the above.
> 
> CVE-2023-39810 would be nice too, but that will trigger an need to
> update trixie as well. It's triaged as non-dsa by the security team, so
> this would become an stable-proposed-update. (Let me know your thoughts
> about this one.)
> 
> For what I can see (it seems that upstream bug tracker is restricting
> access), the 4 open CVEs in sid/testing doesn't have a resolution
> yet. Do you by chance have an upstream contact to ask about them?
> 
> Cheers,
> tobi
> 
> > Thanks,
> > 
> > /mjt


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