| Summary: | [abrt] claws-mail-3.7.9-2.fc14: g_slist_free out of bounds / imap folder ok_flags (SIGSEGV) | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Patrick C. F. Ernzer <pcfe> | ||||
| Component: | claws-mail | Assignee: | Andreas Bierfert <andreas.bierfert> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 14 | CC: | andreas.bierfert, bugs.michael, tomspur | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | abrt_hash:d06a13030fe696bb376aef6cf022ae2a53603120 | ||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-08-16 12:06:28 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Attachments: |
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Description
Patrick C. F. Ernzer
2011-05-09 13:40:14 UTC
Created attachment 497795 [details]
File: backtrace
> #0 g_slice_free_chain_with_offset (mem_size=16, mem_chain=<value optimized
> out>, next_offset=8) at gslice.c:942
> current = 0x2ba47 <Address 0x2ba47 out of bounds>
Failure to free a GSList like that smells like heap corruption - and this crash in glib2's memory slice deallocator just being a side-effect. [Note that some bug reporters also see crashes in glibc's malloc, affecting various parts of Claws Mail.]
imap.c:
3377 g_slist_free(IMAP_FOLDER_ITEM(item)->ok_flags);
3378 IMAP_FOLDER_ITEM(item)->ok_flags = NULL;
^ This makes a double-free unlikely, IMO.
etpan/imap.c:
1427 GSList *t_flags = NULL;
...
1471 if (c_flag != 0) {
1472 t_flags = g_slist_prepend(t_flag
s,
1473 GUINT_TO_POINTER(c_flag)
);
1474 }
1475 }
1476 }
1477 if (ok_flags)
1478 *ok_flags = t_flags;
1479 }
^ This is where it created and filled the GSList.
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