7.8

CVE-2017-7645: canonical ubuntu_linux Improper Input Validation

Modified
AliasesUBUNTU-CVE-2017-7645DEBIAN-CVE-2017-7645
Published 18-04-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-7645 is a high (CVSS 7.8) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 5.91% chance of exploitation in the next 30 days, higher than 93.2% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 6% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
5.91%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 44 · Related 35
DLA-993-1DSA-3886-1MGASA-2017-0147MGASA-2017-0148MGASA-2017-0149RHSA-2017:1615

Timeline

  1. 18-04-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel through 4.10.11 allows remote attackers to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c, fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c.

CVSS metrics

5 scores · 3 sources · 3 versions

EPSS trend

Probability

5.91%

Chance of exploitation in the next 30 days

Percentile

93%

Versus all other CVEs

30-day change

No change 0.00 pp

From 5.91% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu17 products
  • linux< 3.13.0-157.207 | < 4.4.0-79.100
  • linux-aws< 4.4.0-1018.27
  • linux-azure-6.11All versions (No fix recorded)
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-azure-fde-5.15All versions (No fix recorded)
Debian2 products
Canonical1 product
Linux1 product
  • linux_kernel< 3.2.89 | ≥ 3.3, < 3.10.107 | ≥ 3.11, < 3.12.74 | ≥ 3.13, < 3.16.44 | ≥ 3.17, < 3.18.52 | ≥ 3.19, < 4.1.40 | ≥ 4.2, < 4.4.66 | ≥ 4.5, < 4.9.26 | ≥ 4.10, < 4.10.14

4 vendors · 21 products

References

22 links
Show all 22 references