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@Abdullah-Ebryx Abdullah-Ebryx commented Aug 12, 2025

Summary by Sourcery

Prevent buffer overflow when creating UNIX domain socket by validating the path length before copying into sun_path in seccomp-receiver.

Bug Fixes:

  • Add check to ensure the socket path length is less than sun_path capacity before strcpy
  • Return error if the provided path is too long

Signed-off-by: Abdullah-Ebryx <abdullah.shahbaz@ebryx.com>
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sourcery-ai bot commented Aug 12, 2025

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Ensure the UNIX domain socket path cannot overflow its buffer by validating its length before copying and exiting with an error on failure.

File-Level Changes

Change Details Files
Validate path length to prevent BOF in UNIX socket path
  • Inserted a check that strlen(path) must be less than sizeof(addr.sun_path)
  • Call error(EXIT_FAILURE, 0, "invalid path") when the path is too long
contrib/seccomp-receiver/seccomp-receiver.c

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Hey @Abdullah-Ebryx - I've reviewed your changes and they look great!

Prompt for AI Agents
Please address the comments from this code review:
## Individual Comments

### Comment 1
<location> `contrib/seccomp-receiver/seccomp-receiver.c:52` </location>
<code_context>
-
+  
+  if (strlen (path) >= sizeof (addr.sun_path))
+    error (EXIT_FAILURE, 0, "invalid path");
+    
   strcpy (addr.sun_path, path);
</code_context>

<issue_to_address>
The error message for an invalid path could be more descriptive.

Consider adding the invalid path or its length to the error message for better debugging context.
</issue_to_address>

<suggested_fix>
<<<<<<< SEARCH
  if (strlen (path) >= sizeof (addr.sun_path))
    error (EXIT_FAILURE, 0, "invalid path");
=======
  if (strlen (path) >= sizeof (addr.sun_path))
    error (EXIT_FAILURE, 0, "invalid path: '%s' (length: %zu, max: %zu)", path, strlen(path), sizeof(addr.sun_path) - 1);
>>>>>>> REPLACE

</suggested_fix>

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Comment on lines +51 to +52
if (strlen (path) >= sizeof (addr.sun_path))
error (EXIT_FAILURE, 0, "invalid path");
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suggestion: The error message for an invalid path could be more descriptive.

Consider adding the invalid path or its length to the error message for better debugging context.

Suggested change
if (strlen (path) >= sizeof (addr.sun_path))
error (EXIT_FAILURE, 0, "invalid path");
if (strlen (path) >= sizeof (addr.sun_path))
error (EXIT_FAILURE, 0, "invalid path: '%s' (length: %zu, max: %zu)", path, strlen(path), sizeof(addr.sun_path) - 1);

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@giuseppe giuseppe left a comment

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LGTM

@giuseppe giuseppe merged commit 819af63 into containers:main Aug 25, 2025
43 checks passed
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2 participants