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Fencer Intel
high 8.1

CVE-2015-8983 json

Integer overflow in the _IO_wstr_overflow function in libio/wstrops.c in the GNU C Library (aka glibc or libc6) before 2.22 allows context-…

published 9y ago modified 4mo ago also EUVD-2015-8837

cvss
8.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.0%
EPSS 4.0% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Integer overflow in the _IO_wstr_overflow function in libio/wstrops.c in the GNU C Library (aka glibc or libc6) before 2.22 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors related to computing a size in bytes, which triggers a heap-based buffer overflow.

Patch / fix

  • glibc Debian 14, Debian 13, Debian 12 2.21-1

debian advisories DEBIAN-CVE-2015-8983

  • eglibc Ubuntu 14.04 LTS 2.19-0ubuntu6.10

ubuntu advisories UBUNTU-CVE-2015-8983

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

  • glibc SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 2.11.3-17.110.40.1

suse advisories SUSE-SU-2022:14923-1

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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-2015-8983 updated cvss 4.4

glibc: _IO_wstr_overflow integer overflow

  • Red Hat Enterprise Linux 5 glibc Red Hat Enterprise Linux 6 nscd, glibc, glibc-utils, glibc-common
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 7 nscd, glibc, glibc-utils, glibc-common
    affected: no fix available

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

4.01% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

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.