Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Description of problem:
Running subscription manager to register a host always end up with SIGSEGV on rhel 6.7.
Executed command: /usr/bin/python -S /usr/sbin/subscription-manager register --org=CATS --activat
Program terminated with signal 11, Segmentation fault.
Version-Release number of selected component (if applicable):
subscription-manager-1.14.10-1.el6.x86_64
libxml2-2.7.6-20.el6.x86_64
How reproducible:
We could not reproduce this internally. But from the code:
2519 if ((xmlInputCallbackTable[i].opencallback == xmlGzfileOpen) &&
2520 (strcmp(URI, "-") != 0)) {
2521 if (((z_stream *)context)->avail_in > 4) {
2522 char *cptr, buff4[4];
2523 cptr = (char *) ((z_stream *)context)->next_in;
2524 if (gzread(context, buff4, 4) == 4) {
2525 if (strncmp(buff4, cptr, 4) == 0)
2526 ret->compressed = 0;
2527 else
2528 ret->compressed = 1;
2529 gzrewind(context);
2530 }
2531 }
2532 }
The ((z_stream *)context)->avail_in seems not to be initialized since the xmlGzfileOpen callback just calls gzopen and there is no read operation done before it is being used. Also gzopen should return gzFile structure where I so not see a way it could be compatible with z_stream structure.
Actual results:
SIGSEGV - cptr = (char *) ((z_stream *)context)->next_in; points out of the allocated memory and it is also being used before any read operation.
Expected results:
The registration attempt will not fail on SIGSEGV
Description of problem: Running subscription manager to register a host always end up with SIGSEGV on rhel 6.7. Executed command: /usr/bin/python -S /usr/sbin/subscription-manager register --org=CATS --activat Program terminated with signal 11, Segmentation fault. Version-Release number of selected component (if applicable): subscription-manager-1.14.10-1.el6.x86_64 libxml2-2.7.6-20.el6.x86_64 How reproducible: We could not reproduce this internally. But from the code: 2519 if ((xmlInputCallbackTable[i].opencallback == xmlGzfileOpen) && 2520 (strcmp(URI, "-") != 0)) { 2521 if (((z_stream *)context)->avail_in > 4) { 2522 char *cptr, buff4[4]; 2523 cptr = (char *) ((z_stream *)context)->next_in; 2524 if (gzread(context, buff4, 4) == 4) { 2525 if (strncmp(buff4, cptr, 4) == 0) 2526 ret->compressed = 0; 2527 else 2528 ret->compressed = 1; 2529 gzrewind(context); 2530 } 2531 } 2532 } The ((z_stream *)context)->avail_in seems not to be initialized since the xmlGzfileOpen callback just calls gzopen and there is no read operation done before it is being used. Also gzopen should return gzFile structure where I so not see a way it could be compatible with z_stream structure. Actual results: SIGSEGV - cptr = (char *) ((z_stream *)context)->next_in; points out of the allocated memory and it is also being used before any read operation. Expected results: The registration attempt will not fail on SIGSEGV