CVE-2017-18249: debian debian_linux
Vulnerability summary
CVE-2017-18249 is a high (CVSS 7.0) vulnerability in debian debian_linux. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 23.5% of scored vulnerabilities.
Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 8Timeline
- 26-03-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The add_free_nid function in fs/f2fs/node.c in the Linux kernel before 4.12 does not properly track an allocated nid, which allows local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.0HighCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.0HighCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.31%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.31% 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.
Ubuntu21 products
- linuxAll versions (No fix recorded) | < 4.4.0-145.171
- linux-aws< 4.4.0-1040.43 | < 4.4.0-1079.89
- linux-azure< 4.13.0-1005.7
- linux-azure-6.11All versions (No fix recorded)
- linux-azure-fdeAll versions (No fix recorded)
Debian2 products
- linux< 4.12.6-1
- debian_linuxEOL8.0
Linux1 product
- linux_kernel< 4.12
3 vendors · 24 products
References
11 links- github.com/torvalds/linux/commit/30a61ddf8117c26ac5b295e1233eaa9629a94ca3X Refsource MISCPatchThird Party AdvisoryREPORT
lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing ListX Refsource MLISTThird Party Advisory