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Fencer Intel
medium 5.0

CVE-2014-4611 json

Integer overflow in the LZ4 algorithm implementation, as used in Yann Collet LZ4 before r118 and in the lz4_uncompress function in lib/lz4/…

published 2014-07-03 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-4538

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.9%
EPSS 8.9% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

Integer overflow in the LZ4 algorithm implementation, as used in Yann Collet LZ4 before r118 and in the lz4_uncompress function in lib/lz4/lz4_decompress.c in the Linux kernel before 3.15.2, on 32-bit platforms might allow context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted Literal Run that would be improperly handled by programs not complying with an API limitation, a different vulnerability than CVE-2014-4715.

Patch / fix

  • linux linux_kernel 3.15.2
  • lz4 Debian 14, Debian 13, Debian 12 0.0~r119-1
  • linux Debian 14, Debian 13, Debian 12 3.14.9-1

debian advisories DEBIAN-CVE-2014-4611

  • linux Ubuntu 14.04 LTS 3.13.0-32.57
  • lz4 Ubuntu Pro 14.04 LTS 0.0~r114-2ubuntu1+esm1

ubuntu advisories UBUNTU-CVE-2014-4611

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-4611 updated cvss 6.0

lz4: LZ4_decompress_generic() integer overflow

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, python-perf, kernel-kdump, kernel-tools, +3 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

8.87% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.