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Bug 1837367 - nfnl_osf fails to load signatures
Summary: nfnl_osf fails to load signatures
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: iptables
Version: 8.3
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: rc
: 8.0
Assignee: Phil Sutter
QA Contact: Jiri Peska
URL:
Whiteboard:
Depends On: 1829820
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-05-19 11:03 UTC by Phil Sutter
Modified: 2020-11-04 01:55 UTC (History)
6 users (show)

Fixed In Version: iptables-1.8.4-12.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1829820
Environment:
Last Closed: 2020-11-04 01:54:58 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:4518 0 None None None 2020-11-04 01:55:11 UTC

Comment 1 Phil Sutter 2020-05-19 11:04:58 UTC 
Upstream commits to backport:

commit c8332553caf48132403895bae750b3cd09a2efd8
Author: Phil Sutter <phil>
Date:   Sat May 9 13:36:49 2020 +0200

    nfnl_osf: Fix broken conversion to nfnl_query()
    
    Due to missing NLM_F_ACK flag in request, nfnetlink code in kernel
    didn't create an own ACK message but left it upon subsystem to ACK or
    not. Since nfnetlink_osf doesn't ACK by itself, nfnl_query() got stuck
    waiting for a reply.
    
    Whoever did the conversion from deprecated nfnl_talk() obviously didn't
    even test basic functionality of the tool.
    
    Fixes: 52aa15098ebd6 ("nfnl_osf: Replace deprecated nfnl_talk() by nfnl_query()")
    Signed-off-by: Phil Sutter <phil>

commit 3e09bd1888575cfec136574d2b0e810ba33f1cfb
Author: Phil Sutter <phil>
Date:   Sat May 9 13:42:56 2020 +0200

    nfnl_osf: Improve error handling
    
    For some error cases, no log message was created - hence apart from the
    return code there was no indication of failing execution.
    
    If a line load fails, don't abort but continue with the remaining
    file contents. The current pf.os file in this repository serves as
    proof-of-concept:
    
    Lines 700 and 701: Duplicates of lines 698 and 699 because 'W*' and 'W0'
    parse into the same data.
    
    Line 704: Duplicate of line 702 because apart from 'W*' and 'W0', only
    the first three fields on right-hand side are sent to the kernel.
    
    When loading, these dups are ignored (they would bounce if NLM_F_EXCL
    was given). Upon deletion, they cause ENOENT response from kernel. In
    order to align duplicate-tolerance in both modes, just ignore that
    ENOENT.
    
    Signed-off-by: Phil Sutter <phil>
Comment 9 errata-xmlrpc 2020-11-04 01:54:58 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (iptables bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:4518
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