Oracle Linux 8 : glibc (ELSA-2026-42733)

high Nessus Plugin ID 330358

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-42733 advisory.

- CVE-2026-5435 Out-of-bounds write via TSIG record processing (RHEL-181724)
- CVE-2026-5928: Fix ungetwc operating on byte stream (RHEL-181725)
- CVE-2026-5450: Fix buffer overflow in scanf (RHEL-172700)
- Add tests for CVE-2026-4437 and CVE-2026-4438 (RHEL-173358)
- CVE-2026-4046: Fix assertion failure in IBM1390 and IBM1399 iconv modules (RHEL-162891)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-42733.html

Plugin Details

Severity: High

ID: 330358

File Name: oraclelinux_ELSA-2026-42733.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/28/2026

Updated: 7/28/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-5435

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, cpe:/o:oracle:linux:8:10:baseos_patch, p-cpe:/a:oracle:linux:compat-libpthread-nonshared, p-cpe:/a:oracle:linux:glibc-all-langpacks, p-cpe:/a:oracle:linux:glibc-benchtests, p-cpe:/a:oracle:linux:glibc-common, p-cpe:/a:oracle:linux:glibc-devel, p-cpe:/a:oracle:linux:glibc-doc, p-cpe:/a:oracle:linux:glibc-gconv-extra, p-cpe:/a:oracle:linux:glibc-headers, p-cpe:/a:oracle:linux:glibc-langpack-aa, p-cpe:/a:oracle:linux:glibc-langpack-af, p-cpe:/a:oracle:linux:glibc-langpack-agr, p-cpe:/a:oracle:linux:glibc-langpack-ak, p-cpe:/a:oracle:linux:glibc-langpack-am, p-cpe:/a:oracle:linux:glibc-langpack-an, p-cpe:/a:oracle:linux:glibc-langpack-anp, p-cpe:/a:oracle:linux:glibc-langpack-ar, p-cpe:/a:oracle:linux:glibc-langpack-as, p-cpe:/a:oracle:linux:glibc-langpack-ast, p-cpe:/a:oracle:linux:glibc-langpack-ayc, p-cpe:/a:oracle:linux:glibc-langpack-az, p-cpe:/a:oracle:linux:glibc-langpack-be, p-cpe:/a:oracle:linux:glibc-langpack-bem, p-cpe:/a:oracle:linux:glibc-langpack-ber, p-cpe:/a:oracle:linux:glibc-langpack-bg, p-cpe:/a:oracle:linux:glibc-langpack-bhb, p-cpe:/a:oracle:linux:glibc-langpack-bho, p-cpe:/a:oracle:linux:glibc-langpack-bi, p-cpe:/a:oracle:linux:glibc-langpack-bn, p-cpe:/a:oracle:linux:glibc-langpack-bo, p-cpe:/a:oracle:linux:glibc-langpack-br, p-cpe:/a:oracle:linux:glibc-langpack-brx, p-cpe:/a:oracle:linux:glibc-langpack-bs, p-cpe:/a:oracle:linux:glibc-langpack-byn, p-cpe:/a:oracle:linux:glibc-langpack-ca, p-cpe:/a:oracle:linux:glibc-langpack-ce, p-cpe:/a:oracle:linux:glibc-langpack-chr, p-cpe:/a:oracle:linux:glibc-langpack-cmn, p-cpe:/a:oracle:linux:glibc-langpack-crh, p-cpe:/a:oracle:linux:glibc-langpack-cs, p-cpe:/a:oracle:linux:glibc-langpack-csb, p-cpe:/a:oracle:linux:glibc-langpack-cv, p-cpe:/a:oracle:linux:glibc-langpack-cy, p-cpe:/a:oracle:linux:glibc-langpack-da, p-cpe:/a:oracle:linux:glibc-langpack-de, p-cpe:/a:oracle:linux:glibc-langpack-doi, p-cpe:/a:oracle:linux:glibc-langpack-dsb, p-cpe:/a:oracle:linux:glibc-langpack-dv, p-cpe:/a:oracle:linux:glibc-langpack-dz, p-cpe:/a:oracle:linux:glibc-langpack-el, p-cpe:/a:oracle:linux:glibc-langpack-en, p-cpe:/a:oracle:linux:glibc-langpack-eo, p-cpe:/a:oracle:linux:glibc-langpack-es, p-cpe:/a:oracle:linux:glibc-langpack-et, p-cpe:/a:oracle:linux:glibc-langpack-eu, p-cpe:/a:oracle:linux:glibc-langpack-fa, p-cpe:/a:oracle:linux:glibc-langpack-ff, p-cpe:/a:oracle:linux:glibc-langpack-fi, p-cpe:/a:oracle:linux:glibc-langpack-fil, p-cpe:/a:oracle:linux:glibc-langpack-fo, p-cpe:/a:oracle:linux:glibc-langpack-fr, p-cpe:/a:oracle:linux:glibc-langpack-fur, p-cpe:/a:oracle:linux:glibc-langpack-fy, p-cpe:/a:oracle:linux:glibc-langpack-ga, p-cpe:/a:oracle:linux:glibc-langpack-gd, p-cpe:/a:oracle:linux:glibc-langpack-gez, p-cpe:/a:oracle:linux:glibc-langpack-gl, p-cpe:/a:oracle:linux:glibc-langpack-gu, p-cpe:/a:oracle:linux:glibc-langpack-gv, p-cpe:/a:oracle:linux:glibc-langpack-ha, p-cpe:/a:oracle:linux:glibc-langpack-hak, p-cpe:/a:oracle:linux:glibc-langpack-he, p-cpe:/a:oracle:linux:glibc-langpack-hi, p-cpe:/a:oracle:linux:glibc-langpack-hif, p-cpe:/a:oracle:linux:glibc-langpack-hne, p-cpe:/a:oracle:linux:glibc-langpack-hr, p-cpe:/a:oracle:linux:glibc-langpack-hsb, p-cpe:/a:oracle:linux:glibc-langpack-ht, p-cpe:/a:oracle:linux:glibc-langpack-hu, p-cpe:/a:oracle:linux:glibc-langpack-hy, p-cpe:/a:oracle:linux:glibc-langpack-ia, p-cpe:/a:oracle:linux:glibc-langpack-id, p-cpe:/a:oracle:linux:glibc-langpack-ig, p-cpe:/a:oracle:linux:glibc-langpack-ik, p-cpe:/a:oracle:linux:glibc-langpack-is, p-cpe:/a:oracle:linux:glibc-langpack-it, p-cpe:/a:oracle:linux:glibc-langpack-iu, p-cpe:/a:oracle:linux:glibc-langpack-ja, p-cpe:/a:oracle:linux:glibc-langpack-ka, p-cpe:/a:oracle:linux:glibc-langpack-kab, p-cpe:/a:oracle:linux:glibc-langpack-kk, p-cpe:/a:oracle:linux:glibc-langpack-kl, p-cpe:/a:oracle:linux:glibc-langpack-km, p-cpe:/a:oracle:linux:glibc-langpack-kn, p-cpe:/a:oracle:linux:glibc-langpack-ko, p-cpe:/a:oracle:linux:glibc-langpack-kok, p-cpe:/a:oracle:linux:glibc-langpack-ks, p-cpe:/a:oracle:linux:glibc-langpack-ku, p-cpe:/a:oracle:linux:glibc-langpack-kw, p-cpe:/a:oracle:linux:glibc-langpack-ky, p-cpe:/a:oracle:linux:glibc-langpack-lb, p-cpe:/a:oracle:linux:glibc-langpack-lg, p-cpe:/a:oracle:linux:glibc-langpack-li, p-cpe:/a:oracle:linux:glibc-langpack-lij, p-cpe:/a:oracle:linux:glibc-langpack-ln, p-cpe:/a:oracle:linux:glibc-langpack-lo, p-cpe:/a:oracle:linux:glibc-langpack-lt, p-cpe:/a:oracle:linux:glibc-langpack-lv, p-cpe:/a:oracle:linux:glibc-langpack-lzh, p-cpe:/a:oracle:linux:glibc-langpack-mag, p-cpe:/a:oracle:linux:glibc-langpack-mai, p-cpe:/a:oracle:linux:glibc-langpack-mfe, p-cpe:/a:oracle:linux:glibc-langpack-mg, p-cpe:/a:oracle:linux:glibc-langpack-mhr, p-cpe:/a:oracle:linux:glibc-langpack-mi, p-cpe:/a:oracle:linux:glibc-langpack-miq, p-cpe:/a:oracle:linux:glibc-langpack-mjw, p-cpe:/a:oracle:linux:glibc-langpack-mk, p-cpe:/a:oracle:linux:glibc-langpack-ml, p-cpe:/a:oracle:linux:glibc-langpack-mn, p-cpe:/a:oracle:linux:glibc-langpack-mni, p-cpe:/a:oracle:linux:glibc-langpack-mr, p-cpe:/a:oracle:linux:glibc-langpack-ms, p-cpe:/a:oracle:linux:glibc-langpack-mt, p-cpe:/a:oracle:linux:glibc-langpack-my, p-cpe:/a:oracle:linux:glibc-langpack-nan, p-cpe:/a:oracle:linux:glibc-langpack-nb, p-cpe:/a:oracle:linux:glibc-langpack-nds, p-cpe:/a:oracle:linux:glibc-langpack-ne, p-cpe:/a:oracle:linux:glibc-langpack-nhn, p-cpe:/a:oracle:linux:glibc-langpack-niu, p-cpe:/a:oracle:linux:glibc-langpack-nl, p-cpe:/a:oracle:linux:glibc-langpack-nn, p-cpe:/a:oracle:linux:glibc-langpack-nr, p-cpe:/a:oracle:linux:glibc-langpack-nso, p-cpe:/a:oracle:linux:glibc-langpack-oc, p-cpe:/a:oracle:linux:glibc-langpack-om, p-cpe:/a:oracle:linux:glibc-langpack-or, p-cpe:/a:oracle:linux:glibc-langpack-os, p-cpe:/a:oracle:linux:glibc-langpack-pa, p-cpe:/a:oracle:linux:glibc-langpack-pap, p-cpe:/a:oracle:linux:glibc-langpack-pl, p-cpe:/a:oracle:linux:glibc-langpack-ps, p-cpe:/a:oracle:linux:glibc-langpack-pt, p-cpe:/a:oracle:linux:glibc-langpack-quz, p-cpe:/a:oracle:linux:glibc-langpack-raj, p-cpe:/a:oracle:linux:glibc-langpack-ro, p-cpe:/a:oracle:linux:glibc-langpack-ru, p-cpe:/a:oracle:linux:glibc-langpack-rw, p-cpe:/a:oracle:linux:glibc-langpack-sa, p-cpe:/a:oracle:linux:glibc-langpack-sah, p-cpe:/a:oracle:linux:glibc-langpack-sat, p-cpe:/a:oracle:linux:glibc-langpack-sc, p-cpe:/a:oracle:linux:glibc-langpack-sd, p-cpe:/a:oracle:linux:glibc-langpack-se, p-cpe:/a:oracle:linux:glibc-langpack-sgs, p-cpe:/a:oracle:linux:glibc-langpack-shn, p-cpe:/a:oracle:linux:glibc-langpack-shs, p-cpe:/a:oracle:linux:glibc-langpack-si, p-cpe:/a:oracle:linux:glibc-langpack-sid, p-cpe:/a:oracle:linux:glibc-langpack-sk, p-cpe:/a:oracle:linux:glibc-langpack-sl, p-cpe:/a:oracle:linux:glibc-langpack-sm, p-cpe:/a:oracle:linux:glibc-langpack-so, p-cpe:/a:oracle:linux:glibc-langpack-sq, p-cpe:/a:oracle:linux:glibc-langpack-sr, p-cpe:/a:oracle:linux:glibc-langpack-ss, p-cpe:/a:oracle:linux:glibc-langpack-st, p-cpe:/a:oracle:linux:glibc-langpack-sv, p-cpe:/a:oracle:linux:glibc-langpack-sw, p-cpe:/a:oracle:linux:glibc-langpack-szl, p-cpe:/a:oracle:linux:glibc-langpack-ta, p-cpe:/a:oracle:linux:glibc-langpack-tcy, p-cpe:/a:oracle:linux:glibc-langpack-te, p-cpe:/a:oracle:linux:glibc-langpack-tg, p-cpe:/a:oracle:linux:glibc-langpack-th, p-cpe:/a:oracle:linux:glibc-langpack-the, p-cpe:/a:oracle:linux:glibc-langpack-ti, p-cpe:/a:oracle:linux:glibc-langpack-tig, p-cpe:/a:oracle:linux:glibc-langpack-tk, p-cpe:/a:oracle:linux:glibc-langpack-tl, p-cpe:/a:oracle:linux:glibc-langpack-tn, p-cpe:/a:oracle:linux:glibc-langpack-to, p-cpe:/a:oracle:linux:glibc-langpack-tpi, p-cpe:/a:oracle:linux:glibc-langpack-tr, p-cpe:/a:oracle:linux:glibc-langpack-ts, p-cpe:/a:oracle:linux:glibc-langpack-tt, p-cpe:/a:oracle:linux:glibc-langpack-ug, p-cpe:/a:oracle:linux:glibc-langpack-uk, p-cpe:/a:oracle:linux:glibc-langpack-unm, p-cpe:/a:oracle:linux:glibc-langpack-ur, p-cpe:/a:oracle:linux:glibc-langpack-uz, p-cpe:/a:oracle:linux:glibc-langpack-ve, p-cpe:/a:oracle:linux:glibc-langpack-vi, p-cpe:/a:oracle:linux:glibc-langpack-wa, p-cpe:/a:oracle:linux:glibc-langpack-wae, p-cpe:/a:oracle:linux:glibc-langpack-wal, p-cpe:/a:oracle:linux:glibc-langpack-wo, p-cpe:/a:oracle:linux:glibc-langpack-xh, p-cpe:/a:oracle:linux:glibc-langpack-yi, p-cpe:/a:oracle:linux:glibc-langpack-yo, p-cpe:/a:oracle:linux:glibc-langpack-yue, p-cpe:/a:oracle:linux:glibc-langpack-yuw, p-cpe:/a:oracle:linux:glibc-langpack-zh, p-cpe:/a:oracle:linux:glibc-langpack-zu, p-cpe:/a:oracle:linux:glibc-locale-source, p-cpe:/a:oracle:linux:glibc-minimal-langpack, p-cpe:/a:oracle:linux:glibc-nss-devel, p-cpe:/a:oracle:linux:glibc-static, p-cpe:/a:oracle:linux:glibc-utils, p-cpe:/a:oracle:linux:glibc, p-cpe:/a:oracle:linux:libnsl, p-cpe:/a:oracle:linux:nscd, p-cpe:/a:oracle:linux:nss_db, p-cpe:/a:oracle:linux:nss_hesiod

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/23/2026

Vulnerability Publication Date: 4/16/2026

Reference Information

CVE: CVE-2026-5435, CVE-2026-5928, CVE-2026-6238