Bug 1852014 (CVE-2020-14311)
| Summary: | CVE-2020-14311 grub2: Integer overflow in grub_ext2_read_link leads to heap-based buffer overflow | ||
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| Product: | [Other] Security Response | Reporter: | Marco Benatto <mbenatto> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | bootloader-eng-team, fmartine, lkundrak, pjones, security-response-team |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | grub 2.06 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in grub2 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow, leading to a zero-sized memory allocation with a subsequent heap-based buffer overflow. The highest threat from this vulnerability is to integrity and system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-07-29 19:27:49 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: | 1854446, 1854447, 1854448, 1854449, 1854450, 1854451, 1854452, 1854453, 1854454, 1854455, 1854456, 1863018 | ||
| Bug Blocks: | 1852004 | ||
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Description
Marco Benatto
2020-06-29 15:27:39 UTC
Acknowledgments: Name: Chris Coulson (Ubuntu Security Team) This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:3216 https://access.redhat.com/errata/RHSA-2020:3216 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-2020-14311 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:3217 https://access.redhat.com/errata/RHSA-2020:3217 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2020:3223 https://access.redhat.com/errata/RHSA-2020:3223 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions Via RHSA-2020:3227 https://access.redhat.com/errata/RHSA-2020:3227 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.2 Advanced Update Support Via RHSA-2020:3273 https://access.redhat.com/errata/RHSA-2020:3273 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-2020:3275 https://access.redhat.com/errata/RHSA-2020:3275 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.6 Extended Update Support Via RHSA-2020:3271 https://access.redhat.com/errata/RHSA-2020:3271 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.3 Advanced Update Support Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions Red Hat Enterprise Linux 7.3 Telco Extended Update Support Via RHSA-2020:3276 https://access.redhat.com/errata/RHSA-2020:3276 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.7 Extended Update Support Via RHSA-2020:3274 https://access.redhat.com/errata/RHSA-2020:3274 Created grub2 tracking bugs for this issue: Affects: fedora-all [bug 1863018] |