bgpd: Fix for session reset issue caused by malformed core attributes in update message (backport #14129) #14132
Conversation
This file contains 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
![mergify[bot]](https://avatars.githubusercontent.com/in/10562?s=60&v=4){kind=small}
RCA: On encountering any attribute error for core attributes in update message, the error handling is set to 'treat as withdraw' and further parsing of the remaining attributes is skipped. But the stream pointer is not being correctly adjusted to point to the next NLRI field skipping the rest of the attributes. This leads to incorrect parsing of the NLRI field, which causes BGP session to reset. Fix: The stream pointer offset is rightly adjusted to point to the NLRI field correctly when the malformed attribute is encountered and remaining attribute parsing is skipped. Signed-off-by: Samanvitha B Bhargav <[email protected]> (cherry picked from commit 70ff940)
Continuous Integration Result: SUCCESSFULCongratulations, this patch passed basic tests Tested-by: NetDEF / OpenSourceRouting.org CI System CI System Testrun URL: https://ci1.netdef.org/browse/FRR-PULLREQ2-13258/ This is a comment from an automated CI system. Warnings Generated during build:Checkout code: Successful with additional warnings |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
This is an automatic backport of pull request #14129 done by Mergify.
Mergify commands and options
More conditions and actions can be found in the documentation.
You can also trigger Mergify actions by commenting on this pull request:
@Mergifyio refreshwill re-evaluate the rules@Mergifyio rebasewill rebase this PR on its base branch@Mergifyio updatewill merge the base branch into this PR@Mergifyio backport <destination>will backport this PR on<destination>branchAdditionally, on Mergify dashboard you can:
Finally, you can contact us on https://mergify.com