Medium severity6.5NVD Advisory· Published May 27, 2026· Updated Oct 14, 2026
CVE-2026-2340
CVE-2026-2340
Description
A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
91- osv-coords84 versionspkg:apk/wolfi/libsmbclientpkg:apk/chainguard/libsmbclientpkg:apk/chainguard/samba-clientpkg:apk/chainguard/samba-common-toolspkg:apk/chainguard/samba-devpkg:apk/chainguard/samba-libnss-winbindpkg:apk/chainguard/samba-libs-py3pkg:apk/chainguard/samba-pam-winbindpkg:apk/chainguard/samba-serverpkg:apk/chainguard/samba-testpkg:apk/chainguard/samba-winbind-clientspkg:apk/wolfi/libwbclientpkg:apk/wolfi/py3.13-sambapkg:apk/wolfi/samba-commonpkg:apk/wolfi/samba-devpkg:apk/wolfi/samba-libnss-winbindpkg:apk/wolfi/samba-libspkg:apk/wolfi/samba-pam-winbindpkg:apk/wolfi/samba-server-libspkg:apk/wolfi/samba-testpkg:apk/wolfi/samba-util-libspkg:apk/wolfi/samba-winbind-clientspkg:apk/wolfi/samba-winbind-krb5-locatorpkg:apk/wolfi/winbindpkg:rpm/almalinux/ldb-toolspkg:rpm/almalinux/samba-client-libspkg:apk/chainguard/libwbclientpkg:apk/chainguard/winbindpkg:apk/wolfi/samba-clientpkg:apk/wolfi/samba-common-server-libspkg:rpm/almalinux/samba-usersharespkg:apk/wolfi/libauth-sambapkg:apk/wolfi/sambapkg:apk/wolfi/samba-common-toolspkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/samba&distro=SUSE%20Linux%20Micro%206.2pkg:rpm/almalinux/samba-test-libspkg:apk/chainguard/samba-common-server-libspkg:apk/chainguard/samba-libspkg:apk/chainguard/samba-winbind-krb5-locatorpkg:rpm/almalinux/samba-commonpkg:rpm/almalinux/sambapkg:rpm/almalinux/samba-gpupdatepkg:rpm/almalinux/samba-pidlpkg:rpm/opensuse/samba&distro=openSUSE%20Leap%2016.0pkg:rpm/almalinux/python3-samba-testpkg:rpm/almalinux/samba-clientpkg:rpm/almalinux/samba-develpkg:rpm/almalinux/samba-vfs-iouringpkg:rpm/almalinux/libldb-develpkg:rpm/almalinux/python3-samba-dcpkg:rpm/almalinux/samba-common-toolspkg:rpm/almalinux/samba-winbind-clientspkg:rpm/almalinux/samba-winexepkg:apk/chainguard/samba-util-libspkg:rpm/opensuse/samba&distro=openSUSE%20Tumbleweedpkg:rpm/almalinux/libnetapi-develpkg:rpm/almalinux/libwbclientpkg:rpm/almalinux/libwbclient-develpkg:rpm/almalinux/samba-dcerpcpkg:rpm/almalinux/samba-winbindpkg:rpm/almalinux/samba-winbind-krb5-locatorpkg:rpm/almalinux/samba-winbind-modulespkg:apk/chainguard/samba-server-libspkg:apk/wolfi/samba-libs-py3pkg:rpm/almalinux/libldbpkg:rpm/almalinux/python3-sambapkg:rpm/almalinux/samba-common-libspkg:rpm/almalinux/samba-libspkg:rpm/almalinux/samba-testpkg:rpm/almalinux/samba-toolspkg:rpm/almalinux/libnetapipkg:rpm/almalinux/libsmbclientpkg:rpm/almalinux/libsmbclient-develpkg:rpm/almalinux/python3-ldbpkg:rpm/almalinux/samba-dc-libspkg:apk/chainguard/samba-commonpkg:apk/chainguard/py3.13-sambapkg:apk/chainguard/sambapkg:rpm/almalinux/samba-krb5-printingpkg:apk/chainguard/libauth-sambapkg:apk/wolfi/samba-serverpkg:rpm/almalinux/samba-ldb-ldap-modules
< 4.24.3-r0+ 83 more
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.22.9+git.506.22c03ce0781-160000.1.1
- (no CPE)range: < 4.22.9+git.506.22c03ce0781-160000.1.1
- (no CPE)range: < 4.22.9+git.506.22c03ce0781-160000.1.1
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.22.9+git.506.22c03ce0781-160000.1.1
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.23.8+git.477.f78166bceed-1.1
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.23.5-109.el10_2
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.24.3-r0
- (no CPE)range: < 4.23.5-109.el10_2
(expand)+ 1 more
- (no CPE)
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*range: >=4.1.0
- cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
26- access.redhat.com/security/cve/CVE-2026-2340nvdMitigationThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- bugzilla.samba.org/show_bug.cginvdIssue TrackingVendor Advisory
- access.redhat.com/errata/RHSA-2026:22644nvd
- access.redhat.com/errata/RHSA-2026:22963nvd
- access.redhat.com/errata/RHSA-2026:25049nvd
- access.redhat.com/errata/RHSA-2026:25979nvd
- access.redhat.com/errata/RHSA-2026:28053nvd
- access.redhat.com/errata/RHSA-2026:28054nvd
- access.redhat.com/errata/RHSA-2026:28055nvd
- access.redhat.com/errata/RHSA-2026:28056nvd
- access.redhat.com/errata/RHSA-2026:28057nvd
- access.redhat.com/errata/RHSA-2026:29863nvd
- access.redhat.com/errata/RHSA-2026:56786nvd
- access.redhat.com/errata/RHSA-2026:56853nvd
- access.redhat.com/errata/RHSA-2026:56911nvd
- access.redhat.com/errata/RHSA-2026:57483nvd
- access.redhat.com/errata/RHSA-2026:59831nvd
- access.redhat.com/errata/RHSA-2026:60019nvd
- access.redhat.com/errata/RHSA-2026:62409nvd
- access.redhat.com/errata/RHSA-2026:62549nvd
- access.redhat.com/errata/RHSA-2026:65839nvd
- access.redhat.com/errata/RHSA-2026:65851nvd
- access.redhat.com/errata/RHSA-2026:65907nvd
- access.redhat.com/errata/RHSA-2026:67857nvd
- access.redhat.com/errata/RHSA-2026:70586nvd
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