critical
CVE-2026-40468
gawk: gawk: Memory corruption via integer overflow
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Red Hat4.4CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Julia2.1CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L
Trivy's own label is CRITICAL. Rated critical by NVD, Photon OS. Rated lower by Amazon (high), Red Hat (medium), AlmaLinux (medium), Oracle (medium), Rocky Linux (medium), Ubuntu (medium), Azure Linux (low), Julia (low).
Description
Integer overflow vulnerability has been found in "builtin.c" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affects gawk in versions 5.4.0 and below.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 5.0 | gawk, gawk-all-langpacks, gawk-bin and 3 more | 5.3.2-5.ph5 |
| alma 10 | gawk, gawk-all-langpacks | 5.3.0-6.el10_2.1 |
| alma 8 | gawk | 4.2.1-5.el8_10 |
| alma 9 | gawk, gawk-all-langpacks | 5.1.0-6.el9_8.1 |
| amazon linux 2023 | gawk, gawk-all-langpacks, gawk-debuginfo and 3 more | 5.1.0-3.amzn2023.0.4 |
| Azure Linux 3.0 | gawk | 0:5.2.2-2.azl3 |
| debian 11 | gawk | no fix listed |
| debian 12 | gawk | no fix listed |
| debian 13 | gawk | no fix listed |
| debian 14 | gawk | no fix listed |
| echo | gawk | 1:5.2.1-2+e1 |
| julia::Julia Ecosystem Security Advisories | gawk_jll | 5.4.1+0 |
Show all 88 entries from 46 sources
| Source | Package | Fixed in |
|---|---|---|
| Photon OS 5.0 | gawk | 5.3.2-5.ph5 |
| Photon OS 5.0 | gawk-all-langpacks | 5.3.2-5.ph5 |
| Photon OS 5.0 | gawk-bin | 5.3.2-5.ph5 |
| Photon OS 5.0 | gawk-devel | 5.3.2-5.ph5 |
| Photon OS 5.0 | gawk-doc | 5.3.2-5.ph5 |
| Photon OS 5.0 | gawk-extras | 5.3.2-5.ph5 |
| alma 10 | gawk | 5.3.0-6.el10_2.1 |
| alma 10 | gawk-all-langpacks | 5.3.0-6.el10_2.1 |
| alma 8 | gawk | 4.2.1-5.el8_10 |
| alma 9 | gawk | 5.1.0-6.el9_8.1 |
| alma 9 | gawk-all-langpacks | 5.1.0-6.el9_8.1 |
| amazon linux 2023 | gawk | 5.1.0-3.amzn2023.0.4 |
| amazon linux 2023 | gawk-all-langpacks | 5.1.0-3.amzn2023.0.4 |
| amazon linux 2023 | gawk-debuginfo | 5.1.0-3.amzn2023.0.4 |
| amazon linux 2023 | gawk-debugsource | 5.1.0-3.amzn2023.0.4 |
| amazon linux 2023 | gawk-devel | 5.1.0-3.amzn2023.0.4 |
| amazon linux 2023 | gawk-doc | 5.1.0-3.amzn2023.0.4 |
| Azure Linux 3.0 | gawk | 0:5.2.2-2.azl3 |
| debian 11 | gawk | no fix listed |
| debian 12 | gawk | no fix listed |
| debian 13 | gawk | no fix listed |
| debian 14 | gawk | no fix listed |
| echo | gawk | 1:5.2.1-2+e1 |
| julia::Julia Ecosystem Security Advisories | gawk_jll | 5.4.1+0 |
| Oracle Linux 8 | gawk | 4.2.1-5.el8_10 |
| Oracle Linux 9 | gawk | 5.1.0-6.el9_8.1 |
| Oracle Linux 9 | gawk-all-langpacks | 5.1.0-6.el9_8.1 |
| rapidfort alma 10 | gawk | 0:5.3.0-6.el10_2.1 |
| rapidfort alma 10 | gawk-all-langpacks | 5.3.0-6.el10_2.1 |
| rapidfort alma 9 | gawk | 0:5.1.0-6.el9_8.1 |
| rapidfort alma 9 | gawk-all-langpacks | 5.1.0-6.el9_8.1 |
| rapidfort alpine 3.20 | gawk | no fix listed |
| rapidfort alpine 3.21 | gawk | no fix listed |
| rapidfort alpine 3.22 | gawk | no fix listed |
| rapidfort alpine 3.23 | gawk | no fix listed |
| rapidfort alpine 3.24 | gawk | no fix listed |
| rapidfort amazon linux 2023 | gawk | 0:5.1.0-3.amzn2023.0.4 |
| rapidfort amazon linux 2023 | gawk-all-langpacks | 5.1.0-3.amzn2023.0.4 |
| rapidfort amazon linux 2023 | gawk-devel | 5.1.0-3.amzn2023.0.4 |
| rapidfort amazon linux 2023 | gawk-doc | 5.1.0-3.amzn2023.0.4 |
| rapidfort amazon linux 2023 | rf-gawk | 0:5.1.0-3.amzn2023.0.4 |
| rapidfort amazon linux 2023 | rf-gawk-all-langpacks | 5.1.0-3.amzn2023.0.4 |
| rapidfort amazon linux 2023 | rf-gawk-devel | 5.1.0-3.amzn2023.0.4 |
| rapidfort amazon linux 2023 | rf-gawk-doc | 5.1.0-3.amzn2023.0.4 |
| rapidfort debian 12 | gawk | no fix listed |
| rapidfort debian 13 | gawk | no fix listed |
| rapidfort fedora 41 | gawk | 0:5.3.0-5.fc41 |
| rapidfort fedora 41 | rf-gawk | 0:5.3.0-5.fc41 |
| rapidfort fedora 43 | gawk | 0:5.3.2-3.fc43 |
| rapidfort fedora 43 | gawk-all-langpacks | 5.3.2-3.fc43 |
| rapidfort fedora 43 | gawk-devel | 5.3.2-3.fc43 |
| rapidfort fedora 43 | gawk-doc | 5.3.2-3.fc43 |
| rapidfort fedora 43 | rf-gawk | 0:5.3.2-3.fc43 |
| rapidfort fedora 43 | rf-gawk-all-langpacks | 5.3.2-3.fc43 |
| rapidfort fedora 43 | rf-gawk-devel | 5.3.2-3.fc43 |
| rapidfort fedora 43 | rf-gawk-doc | 5.3.2-3.fc43 |
| rapidfort Oracle Linux | rf-gawk | 0:5.4.1-10.rf, 5.4.1-10.rf |
| rapidfort Oracle Linux | rf-gawk-all-langpacks | 5.4.1-10.rf |
| rapidfort Oracle Linux | rf-gawk-devel | 5.4.1-10.rf |
| rapidfort Oracle Linux | rf-gawk-doc | 5.4.1-10.rf |
| rapidfort Oracle Linux 10 | gawk | 0:5.3.0-6.el10_2.1 |
| rapidfort Oracle Linux 10 | gawk-all-langpacks | 0:5.3.0-6.el10_2.1 |
| rapidfort Oracle Linux 9 | gawk | 0:5.1.0-6.el9_8.1 |
| rapidfort Oracle Linux 9 | gawk-all-langpacks | 0:5.1.0-6.el9_8.1 |
| rapidfort Red Hat 10 | gawk | 0:5.3.0-6.el10_2.1 |
| rapidfort Red Hat 10 | rf-gawk | 0:5.3.0-6.el10_2.1 |
| rapidfort rocky | rf-gawk | 0:5.4.1-10.rf |
| rapidfort rocky | rf-gawk-all-langpacks | 0:5.4.1-10.rf |
| rapidfort rocky 9 | gawk | 0:5.1.0-6.el9_8.1 |
| rapidfort rocky 9 | gawk-all-langpacks | 0:5.1.0-6.el9_8.1 |
| rapidfort ubuntu 20.04 | gawk | 1:5.1.0-1ubuntu0.2, 1:5.2.1-2ubuntu0.1, 1:5.3.2-1ubuntu1.1 |
| rapidfort ubuntu 22.04 | gawk | 1:5.1.0-1ubuntu0.2, 1:5.2.1-2ubuntu0.1, 1:5.3.2-1ubuntu1.1 |
| rapidfort ubuntu 24.04 | gawk | 1:5.1.0-1ubuntu0.2, 1:5.2.1-2ubuntu0.1, 1:5.3.2-1ubuntu1.1 |
| Red Hat | gawk | no fix listed |
| Red Hat | openshift/ose-rhel-coreos-8 | no fix listed |
| Red Hat | openshift/ose-rhel-coreos-9 | no fix listed |
| rocky 10 | gawk | 5.3.0-6.el10_2.1 |
| rocky 8 | gawk | 4.2.1-5.el8_10 |
| rocky 9 | gawk | 5.1.0-6.el9_8.1 |
| seal Red Hat 7 | gawk | 4.0.2-4.el7_3.1+sp999 |
| seal Red Hat 7 | seal-gawk | 4.0.2-4.el7_3.1+sp999 |
| seal Red Hat 9 | gawk | 5.1.0-6.el9+sp999 |
| seal Red Hat 9 | seal-gawk | 5.1.0-6.el9+sp999 |
| ubuntu 18.04-ESM | gawk | 1:4.1.4+dfsg-1ubuntu0.1~esm2 |
| ubuntu 20.04-ESM | gawk | 1:5.0.1+dfsg-1ubuntu0.1+esm1 |
| ubuntu 22.04 | gawk | 1:5.1.0-1ubuntu0.2 |
| ubuntu 24.04 | gawk | 1:5.2.1-2ubuntu0.1 |
| ubuntu 26.04 | gawk | 1:5.3.2-1ubuntu1.1 |
References
- https://access.redhat.com/errata/RHSA-2026:73512
- https://access.redhat.com/security/cve/CVE-2026-40468
- https://bugzilla.redhat.com/2499655
- https://bugzilla.redhat.com/2499657
- https://bugzilla.redhat.com/2499658
- https://bugzilla.redhat.com/show_bug.cgi?id=2499655
- https://bugzilla.redhat.com/show_bug.cgi?id=2499657
- https://bugzilla.redhat.com/show_bug.cgi?id=2499658
All 21 references
- https://cert.pl/en/posts/2026/07/CVE-2026-40467
- https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=062f2f2581b991362c046f7f2e238ffa34e6f8c7
- https://creativecommons.org/licenses/by/4.0/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-40467
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-40468
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-40553
- https://errata.almalinux.org/9/ALSA-2026-73512.html
- https://errata.rockylinux.org/RLSA-2026:73512
- https://linux.oracle.com/cve/CVE-2026-40468.html
- https://linux.oracle.com/errata/ELSA-2026-73512.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-40468
- https://ubuntu.com/security/notices/USN-8588-1
- https://www.cve.org/CVERecord?id=CVE-2026-40468