Bug 1930079 (CVE-2021-27363)
| Summary: | CVE-2021-27363 kernel: iscsi: unrestricted access to sessions and handles | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | msiddiqu |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | acaringi, adscvr, airlied, alciregi, bhu, blc, bmasney, brdeoliv, bskeggs, chwhite, cleech, dhoward, dvlasenk, fhrbata, hartsjc, hdegoede, hkrzesin, jarodwilson, jeremy, jforbes, jglisse, jlelli, jonathan, josef, jshortt, jstancek, jwboyer, kcarcia, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mlangsdo, mmilgram, nmurray, pmatouse, psampaio, ptalbert, qzhao, rvrbovsk, security-response-team, steved, tcrider, walters, williams |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
A flaw was found in the way access to sessions and handles was handled in the iSCSI driver in the Linux kernel. A local user could use this flaw to leak iSCSI transport handle kernel address or end arbitrary iSCSI connections on the system.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-04-06 17:35:50 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: | |||
| Bug Depends On: | 1931358, 1931359, 1931360, 1930807, 1930808, 1930809, 1930810, 1930811, 1935903, 1940415, 1940416, 1940417, 1940418, 1940419, 1940420, 1940421, 1940422, 1940423, 1940424, 1940425 | ||
| Bug Blocks: | 1929972 | ||
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Description
msiddiqu
2021-02-18 10:33:42 UTC
Mitigation: The LIBISCSI module will be auto-loaded when required, its use can be disabled by preventing the module from loading with the following instructions: # echo "install libiscsi /bin/true" >> /etc/modprobe.d/disable-libiscsi.conf The system will need to be restarted if the libiscsi modules are loaded. In most circumstances, the libiscsi kernel modules will be unable to be unloaded while any network interfaces are active and the protocol is in use. If the system requires iscsi to work correctly, this mitigation may not be suitable. If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services. Upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1935903] Acknowledgments: Name: Adam Nichols (GRIMM) External References: https://www.openwall.com/lists/oss-security/2021/03/06/1 This was fixed for Fedora with the 5.10.21 stable kernel updates. This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:1070 https://access.redhat.com/errata/RHSA-2021:1070 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2021:1071 https://access.redhat.com/errata/RHSA-2021:1071 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:1081 https://access.redhat.com/errata/RHSA-2021:1081 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:1093 https://access.redhat.com/errata/RHSA-2021:1093 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2021-27363 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2021:1171 https://access.redhat.com/errata/RHSA-2021:1171 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.4 Advanced Update Support Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions Red Hat Enterprise Linux 7.4 Telco Extended Update Support Via RHSA-2021:1267 https://access.redhat.com/errata/RHSA-2021:1267 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:1279 https://access.redhat.com/errata/RHSA-2021:1279 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2021:1272 https://access.redhat.com/errata/RHSA-2021:1272 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.2 Advanced Update Support Via RHSA-2021:1289 https://access.redhat.com/errata/RHSA-2021:1289 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.3 Advanced Update Support Via RHSA-2021:1373 https://access.redhat.com/errata/RHSA-2021:1373 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.6 Extended Update Support Via RHSA-2021:1376 https://access.redhat.com/errata/RHSA-2021:1376 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.7 Extended Update Support Via RHSA-2021:1531 https://access.redhat.com/errata/RHSA-2021:1531 |