Vulnerability Details : CVE-2018-11412
Potential exploit
In the Linux kernel 4.13 through 4.16.11, ext4_read_inline_data() in fs/ext4/inline.c performs a memcpy with an untrusted length value in certain circumstances involving a crafted filesystem that stores the system.data extended attribute value in a dedicated inode.
Products affected by CVE-2018-11412
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-11412
11.51%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 93 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-11412
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2018-11412
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-11412
-
http://www.securityfocus.com/bid/104291
Linux kernel CVE-2018-11412 Out-of-Bounds Security VulnerabilityThird Party Advisory;VDB Entry
-
https://bugzilla.kernel.org/show_bug.cgi?id=199803
199803 – out-of-bounds memcpy via non-inline system.data xattrExploit;Issue Tracking;Third Party Advisory
-
https://usn.ubuntu.com/3752-2/
USN-3752-2: Linux kernel (HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3752-1/
USN-3752-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3752-3/
USN-3752-3: Linux kernel (Azure, GCP, OEM) vulnerabilities | Ubuntu security noticesThird Party Advisory
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https://access.redhat.com/errata/RHSA-2019:0525
RHSA-2019:0525 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.exploit-db.com/exploits/44832/
Linux Kernel < 4.16.11 - 'ext4_read_inline_data()' Memory CorruptionExploit;Third Party Advisory;VDB Entry
-
https://bugs.chromium.org/p/project-zero/issues/detail?id=1580
1580 - Linux ext4: out-of-bounds memcpy via non-inline system.data xattr - project-zero - MonorailExploit;Third Party Advisory
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