NSS: fix initgroups packet heap disclosure - #9036
Open
alexey-tikhonov wants to merge 1 commit into
Open
Conversation
alexey-tikhonov
marked this pull request as ready for review
August 4, 2026 11:26
sss_nss_protocol_fill_initgr() pre-allocates the reply packet for all group entries in result->count, but groups may be skipped when they are non-POSIX, incomplete, or filtered by the negative cache. Shrink the packet after filling it so it contains exactly the data that was written. :fixes: CVE-2026-68744 Assisted-By: Claude Code (Opus 4.6)
alexey-tikhonov
force-pushed
the
bz_2510309
branch
from
August 4, 2026 12:47
f269339 to
105c536
Compare
pbrezina
approved these changes
Aug 6, 2026
sumit-bose
approved these changes
Aug 13, 2026
sumit-bose
left a comment
sumit-bose
left a comment
Contributor
There was a problem hiding this comment.
Hi,
thank you for the fix, ACK.
bye,
Sumit
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
sss_nss_protocol_fill_initgr() pre-allocates the reply packet for all group entries in result->count, but groups may be skipped when they are non-POSIX, incomplete, or filtered by the negative cache. Shrink the packet after filling it so it contains exactly the data that was written.
Fixes: CVE-2026-68744
Assisted-By: Claude Code (Opus 4.6)
RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=2510309