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NixOS Security Triage

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Coordination and triage of security issues in nixpkgs228 Servers

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30 Apr 2026
@vcunat:matrix.orgvcunat(I can have a look later to update.)07:34:44
@vcunat:matrix.orgvcunatI don't see this mentioned in nixpkgs issues+PRs yet: https://copy.fail08:17:44
@vcunat:matrix.orgvcunat(kernel, CVE-2026-31431)08:18:01
@leona:leona.isleona it's discussed heavly over in #security-discuss:nixos.org 08:18:05
@leona:leona.isleona(we wait for the 6.12 release, greg will do sometime today likely)08:18:20
@vcunat:matrix.orgvcunathttps://github.com/NixOS/nixpkgs/pull/51501609:20:14
@autra:trancart.euautra joined the room.10:20:43
@autra:trancart.euautraI'm not on the ML, but I could reproduce the copy.fail issue10:36:45
@hexa:lossy.networkhexa #security-discuss:nixos.org 10:38:54
@hexa:lossy.networkhexaRedacted or Malformed Event10:39:06
@sigmasquadron:matrix.orgFernando Rodrigues * 10:58:37
@enzime:nixos.dev@enzime:nixos.dev joined the room.12:52:46
@enzime:nixos.dev@enzime:nixos.dev hexa could you take a look at this PR? it removes DHE from nginx: https://github.com/NixOS/nixpkgs/pull/515057 12:54:04
@hexa:lossy.networkhexawe're in breaking changes freeze unfortunately12:54:31
@hexa:lossy.networkhexaRedacted or Malformed Event12:54:41
@enzime:nixos.dev@enzime:nixos.dev
In reply to @hexa:lossy.network
we're in breaking changes freeze unfortunately, so removing the option now is not ok.
should we merge the first commit now?
12:56:37
@enzime:nixos.dev@enzime:nixos.devand then leave the dropping the NixOS option till after the freeze?12:56:59
@enzime:nixos.dev@enzime:nixos.dev* and then leave dropping the NixOS option till after the freeze?12:57:05
@hexa:lossy.networkhexaDHE will only be used with dhparams anyway, so I hoped the warning would be sufficient12:59:03
@enzime:nixos.dev@enzime:nixos.devjust investigated further, it doesn't matter if the first commit is merged now as nginx will just disable DHE if DH params are not configured https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_dhparam13:22:10
@hxr404:tchncs.de@hxr404:tchncs.de left the room.13:40:15
@vinetos:matrix.orgVinetos joined the room.13:47:34
@samuel.dionne-riel:cyberus-technology.deSamuel Dionne-Rielhttps://github.com/NixOS/nixpkgs/pull/51460316:01:44
1 May 2026
@leona:leona.isleona

https://gstreamer.freedesktop.org/ 1.28.2 fixes a few high score vulnerabilities.

We already have an open PR but it’s not ready and we are on an unsupported version

06:41:45
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4 May 2026
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2 May 2026
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3 May 2026
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@joerg:thalheim.ioMic92https://github.com/NixOS/nixpkgs/pull/516109 vaultwarden13:33:05
6 May 2026
@arcayr:mischief.expertarcayrhttps://github.com/NixOS/nixpkgs/pull/517132 apacheHttpd 2.4.66 -> 2.4.67 fixing cve-2026-23918 - https://httpd.apache.org/security/vulnerabilities_24.html / https://www.cve.org/CVERecord?id=CVE-2026-2391804:52:22

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