CVE-2017-16995: canonical ubuntu_linux
Vulnerability summary
CVE-2017-16995 is a high (CVSS 7.8) vulnerability in canonical ubuntu_linux. EPSS estimates a 30.05% chance of exploitation in the next 30 days, higher than 98.2% of scored vulnerabilities. 4 public exploits are recorded.
Weaponized exploit (exploit-database, 19-07-2018)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 5Timeline
- 22-12-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.
CVSS metrics
5 scores · 3 sources · 3 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
30.05%
Chance of exploitation in the next 30 days
Percentile
98%
Versus all other CVEs
30-day change
No change 0.00 pp
From 30.05% 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
4 foundLinux - BPF Sign Extension Local Privilege Escalation (Metasploit)
Maturity: weaponized
Linux Kernel < 4.13.9 (Ubuntu 16.04 / Fedora 27) - Local Privilege Escalation
Maturity: weaponized
Linux Kernel < 4.4.0-116 (Ubuntu 16.04.4) - Local Privilege Escalation
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu18 products
- linux< 4.4.0-119.143
- linux-aws< 4.4.0-1016.16 | < 4.4.0-1054.63
- linux-azure< 4.13.0-1005.7
- linux-azure-fdeAll versions (No fix recorded)
- linux-euclid< 4.4.0-9026.28
Debian2 products
- linux< 4.14.7-1
- debian_linuxEOL9.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04
Linux1 product
- linux_kernel≥ 4.9, < 4.9.72 | ≥ 4.10, < 4.14.9
4 vendors · 22 products
References
23 links- github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6fX Refsource MISCThird Party Advisory
