CVE-2017-12193: linux linux_kernel NULL Pointer Dereference
Vulnerability summary
CVE-2017-12193 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 39.2% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 18 · Related 9Timeline
- 22-11-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.45%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.45% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu16 products
- linux< 3.13.0-153.203 | < 4.4.0-103.126
- linux-aws< 4.4.0-1005.5 | < 4.4.0-1043.52
- linux-azure< 4.13.0-1005.7
- linux-azure-fdeAll versions (No fix recorded)
- linux-gcp< 4.13.0-1002.5
Debian1 product
- linux< 4.13.13-1
Linux1 product
- linux_kernel< 4.13.11
3 vendors · 18 products
References
18 links- github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2bX Refsource CONFIRMPatchVendor Advisory
