Vulnerability Details : CVE-2017-17856
kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging the lack of stack-pointer alignment enforcement.
Vulnerability category: OverflowMemory CorruptionDenial of service
Products affected by CVE-2017-17856
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-17856
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 22 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-17856
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2017-17856
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-17856
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a5ec6ae161d72f01411169a938fa5f8baea16e8f
kernel/git/torvalds/linux.git - Linux kernel source treeVendor Advisory
-
http://www.openwall.com/lists/oss-security/2017/12/21/2
oss-security - Linux >=4.9: eBPF memory corruption bugsMailing List;Third Party Advisory
-
https://github.com/torvalds/linux/commit/a5ec6ae161d72f01411169a938fa5f8baea16e8f
bpf: force strict alignment checks for stack pointers · torvalds/linux@a5ec6ae · GitHubPatch;Third Party Advisory
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