Bug 88099
| Summary: | buffer underrun in read_input_file/gencat.c | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | John Reiser <jreiser> |
| Component: | glibc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 9 | CC: | fweimer |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2003-04-09 19:21:39 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2003-136.html |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020529 Description of problem: gencat -H references memory just below a malloc()ed block. act_len can get decremented to zero, not tested, yet used to index buf[act_len -1]. Version-Release number of selected component (if applicable): glibc-2.3.2-11.9 How reproducible: Always Steps to Reproduce: 1.Run catgets testcase: gencat -H test-gencat.h < sample.SJIS with a breakpoint at gencat.c:336: ----- if (buf[act_len - 1] == '\n') { --act_len; /* There might be more than one backslash at the end of the line. Only if there is an odd number of them is the line continued. */ if (buf[act_len - 1] == '\\') ### act_len can be 0 ----- 2. Observe the case when 0==act_len and a reference is made to buf[act_len -1]. 3. Actual Results: 'buf' is referenced at index -1, which is outside the bounds of a malloc()ed block. Expected Results: No reference outside the bounds of a malloc()ed block. Additional info: