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NixOS Security Triage

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Coordination and triage of security issues in nixpkgs217 Servers

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17 Jun 2025
@hexa:lossy.networkhexa * https://insinuator.net/2025/06/disclosure-multiple-vulnerabilities-xserver-xwayland/ K900 Emantor 14:52:04
@k900:0upti.meK900Woo14:56:19
@k900:0upti.meK900On it14:56:22
@k900:0upti.meK900xwayland: https://github.com/NixOS/nixpkgs/pull/41756815:00:26
@k900:0upti.meK900And xorgserver (staging): https://github.com/NixOS/nixpkgs/pull/41756915:03:29
@hexa:lossy.networkhexahttps://github.com/linux-pam/linux-pam/security/advisories/GHSA-f9p8-gjr4-j9gx unmaintained 😕 22:02:13
@hexa:lossy.networkhexa* https://github.com/linux-pam/linux-pam/security/advisories/GHSA-f9p8-gjr4-j9gx unmaintained in nixpkgs 😕 22:02:17
@hexa:lossy.networkhexa

Systems are vulnerable if they use pam_namespace to polyinstantiate a directory

22:02:49
@hexa:lossy.networkhexa https://www.openwall.com/lists/oss-security/2025/06/17/5 libblockdev/udisks Jan Tojnar 22:06:45
18 Jun 2025
@jtojnar:matrix.orgJan Tojnarthanks, opened https://github.com/NixOS/nixpkgs/pull/41776307:20:55
@leona:leona.isleonacan look in around 8 hours if no one beats me to that07:51:03
@h0nig2k:matrix.orgh0nig2khttps://github.com/NixOS/nixpkgs/pull/417898 for CVE-2025-46727 (please backport to 25.05 as well, thank you)15:52:17
@vcunat:matrix.orgvcunat

updated X too soon

A fix will be issued in xorg-server-21.1.18 and xwayland-24.1.8 shortly.

https://lists.x.org/archives/xorg-announce/2025-June/003611.html

16:08:45
@hexa:lossy.networkhexaRedacted or Malformed Event16:23:13
@hexa:lossy.networkhexaRedacted or Malformed Event16:23:39

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