CVE-2018-25020: linux linux_kernel
Vulnerability summary
CVE-2018-25020 is a high (CVSS 7.8) vulnerability in linux linux_kernel. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 45.1% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 19 · Related 18Timeline
- 08-12-2021PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The BPF subsystem in the Linux kernel before 4.17 mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions, leading to an overflow. This affects kernel/bpf/core.c and net/core/filter.c.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.53%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.52% 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.
Ubuntu40 products
- linux< 4.15.0-166.174
- linux-aws< 4.15.0-1118.125
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.8All versions (No fix recorded)
Debian1 product
- linux< 4.17.3-1
Linux1 product
- linux_kernel< 4.17
4 vendors · 51 products
References
7 links- github.com/torvalds/linux/commit/050fad7c4534c13c8eb1d9c2ba66012e014773cbX Refsource MISCPatchThird Party AdvisoryREPORT
- packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.htmlX Refsource MISCThird Party AdvisoryVDB Entry
