kernel: fs/ext4/extents.c leads to information disclosure
Published May 15, 2019
5.5
MEDIUMCVSS 3.1
EPSS 0.65%
Description
fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.
Affected products
No data.
Configuration 1
- ≤ 5.1.2
Configuration 2
- 29
Configuration 3
- 8.0
- 9.0
Configuration 4
- 14.04
- 16.04
- 18.04
- 19.04
Configuration 5
- 8.0
- 7.0
- 8.1
- 8.2
- 8.4
- 8.6
- 7
- 8.0
- 7
- 8.0
- 8.2
- 8.4
- 8.6
- 8.2
- 8.4
- 8.6
- 7.0
- 8.2
- 8.4
- 8.6
- 8.2
- 8.4
- 8.6
- 7.0
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-1062.el7
Fixed · RHSA-2019:2029
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1062.rt56.1022.el7
Fixed · RHSA-2019:2043
Red Hat Enterprise Linux 8
kernel-0:4.18.0-147.el8
Fixed · RHSA-2019:3517
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-147.rt24.93.el8
Fixed · RHSA-2019:3309
Red Hat Enterprise Linux 5
kernel
Out of support scope
Red Hat Enterprise Linux 6
kernel
Will not fix
Red Hat Enterprise Linux 7
kernel-alt
Will not fix
Red Hat Enterprise MRG 2
kernel-rt
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1062.el7 | Fixed | RHSA-2019:2029 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1062.rt56.1022.el7 | Fixed | RHSA-2019:2043 |
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-147.el8 | Fixed | RHSA-2019:3517 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-147.rt24.93.el8 | Fixed | RHSA-2019:3309 |
| Red Hat Enterprise Linux 5 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Will not fix | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This is a possible information leak of data that existed in the extent tree blocks. While the attacker does not have control of what exists in the blocks prior to this point they may be able to glean confidential information or possibly information that could be used to further another attack.
References (27)
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html vendor-advisoryx_refsource_SUSEBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html vendor-advisoryx_refsource_SUSEBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html vendor-advisoryx_refsource_SUSEBroken Link
- http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html x_refsource_MISCThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/108372 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2019:2029 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2043 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3309 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3517 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-11833 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1712072 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-3496 Advisory
- https://github.com/torvalds/linux/commit/592acbf16821288ecdc4192c47e3774a4c48bb64 x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/06/msg00010.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/06/msg00011.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJGZIMGB72TL7OGWRMHIL43WHXFQWU4X/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2019-11833
- https://seclists.org/bugtraq/2019/Jun/26 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://usn.ubuntu.com/4068-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4068-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4069-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4069-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4076-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4095-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/4118-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-11833
- https://www.debian.org/security/2019/dsa-4465 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.
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