CVE catalog
CVE-2026-11774
An integer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasl_io_start_packet(), adding sizeof(uint32_t) to a crafted SASL packet length prefix of 0xFFFFFFFC
- Severity
- High · CVSS 7.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.68% · Oct 25, 2026
An integer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasl_io_start_packet(), adding sizeof(uint32_t) to a crafted SASL packet length prefix of 0xFFFFFFFC causes unsigned wraparound to zero, bypassing the nsslapd-maxsasliosize limit and leading to a heap buffer overflow of up to approximately 2 megabytes of attacker-controlled data. After a successful SASL bind with integrity protection (SSF > 0), a remote attacker can cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, enrolled host, or service account can trigger this vulnerability over the network. This flaw is independent of CVE-2025-14905, which patched schema.c only and did not modify sasl_io.c.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | 389-ds-base | sid | 3.3.1-3 | fixed |
| Debian | 389-ds-base | trixie | 3.1.2+dfsg1-1+deb13u1 | vulnerable |
| Debian | 389-ds-base | bookworm | 2.3.1+dfsg1-1+deb12u1 | vulnerable |
| Cpe | 389-ds-base | Not reported | Not reported | vulnerable |
| Suse | 389-ds | linux enterprise high performance computing 15 sp5-espos | 2.2.10~git272.fd28f95da-150500.3.51.1 | fixed |
| Suse | 389-ds | linux enterprise high performance computing 15 sp5-ltss | 2.2.10~git272.fd28f95da-150500.3.51.1 | fixed |
| Suse | 389-ds | linux enterprise server 15 sp5-ltss | 2.2.10~git272.fd28f95da-150500.3.51.1 | fixed |
| Suse | 389-ds | linux enterprise server for sap applications 15 sp5 | 2.2.10~git272.fd28f95da-150500.3.51.1 | fixed |
| Suse | 389-ds | linux enterprise server 15 sp6-ltss | 2.2.10~git272.fd28f95da-150600.8.35.1 | fixed |
| Suse | 389-ds | linux enterprise server for sap applications 15 sp6 | 2.2.10~git272.fd28f95da-150600.8.35.1 | fixed |
| Suse | 389-ds | linux enterprise module for server applications 15 sp7 | 2.7.0~git234.0afa2e38b-150700.3.22.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | 389-ds-base | source | sid | 3.3.1-1 | not yet assigned | Not reported | [1139809] |
| Debian | 389-ds-base | source | trixie | (unfixed) | not yet assigned | Not reported | [1139809] |
| Debian | 389-ds-base | source | bookworm | (unfixed) | not yet assigned | Not reported | [1139809] |
| Suse | 389-ds | rpm | linux enterprise high performance computing 15 sp5-espos | 2.2.10~git272.fd28f95da-150500.3.51.1 | Not reported | SUSE-SU-2026:3687-1 | Not reported |
| Suse | 389-ds | rpm | linux enterprise high performance computing 15 sp5-ltss | 2.2.10~git272.fd28f95da-150500.3.51.1 | Not reported | SUSE-SU-2026:3687-1 | Not reported |
| Suse | 389-ds | rpm | linux enterprise server 15 sp5-ltss | 2.2.10~git272.fd28f95da-150500.3.51.1 | Not reported | SUSE-SU-2026:3687-1 | Not reported |
| Suse | 389-ds | rpm | linux enterprise server for sap applications 15 sp5 | 2.2.10~git272.fd28f95da-150500.3.51.1 | Not reported | SUSE-SU-2026:3687-1 | Not reported |
| Suse | 389-ds | rpm | linux enterprise server 15 sp6-ltss | 2.2.10~git272.fd28f95da-150600.8.35.1 | Not reported | SUSE-SU-2026:3686-1 | Not reported |
| Suse | 389-ds | rpm | linux enterprise server for sap applications 15 sp6 | 2.2.10~git272.fd28f95da-150600.8.35.1 | Not reported | SUSE-SU-2026:3686-1 | Not reported |
| Suse | 389-ds | rpm | linux enterprise module for server applications 15 sp7 | 2.7.0~git234.0afa2e38b-150700.3.22.1 | Not reported | SUSE-SU-2026:3678-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [389-ds]Affected
Source package: [389-ds-base]
Details (2)
2.3.1+dfsg1-1+deb12u1· all · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
2.3.1+dfsg1-1+deb12u1· all · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- [389-ds-base]Affected
Details (2)
2.3.1+dfsg1-1+deb12u1· amd64 · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
2.3.1+dfsg1-1+deb12u1· arm64 · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- [389-ds-base-dev]Affected
Source package: [389-ds-base]
Details (2)
2.3.1+dfsg1-1+deb12u1· amd64 · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
2.3.1+dfsg1-1+deb12u1· arm64 · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- [389-ds-base-libs]Affected
Source package: [389-ds-base]
Details (2)
2.3.1+dfsg1-1+deb12u1· amd64 · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
2.3.1+dfsg1-1+deb12u1· arm64 · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- [cockpit-389-ds]Affected
Source package: [389-ds-base]
Details (2)
2.3.1+dfsg1-1+deb12u1· all · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
2.3.1+dfsg1-1+deb12u1· all · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
- [python3-lib389]Affected
Source package: [389-ds-base]
Details (2)
2.3.1+dfsg1-1+deb12u1· all · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
2.3.1+dfsg1-1+deb12u1· all · bookwormAffected
nvd · 389-ds-base · debian · bookworm; nvd · 389-ds-base · debian · 12
[Debian 13 (Trixie)]
- [389-ds]Affected
Source package: [389-ds-base]
Details (2)
3.1.2+dfsg1-1+deb13u1· all · trixieAffected
nvd · 389-ds-base · debian · 13
3.1.2+dfsg1-1+deb13u1· all · trixieAffected
nvd · 389-ds-base · debian · 13
- [389-ds-base]Affected
Details (2)
3.1.2+dfsg1-1+deb13u1· amd64 · trixieAffected
nvd · 389-ds-base · debian · 13
3.1.2+dfsg1-1+deb13u1· arm64 · trixieAffected
nvd · 389-ds-base · debian · 13
- [389-ds-base-dev]Affected
Source package: [389-ds-base]
Details (2)
3.1.2+dfsg1-1+deb13u1· amd64 · trixieAffected
nvd · 389-ds-base · debian · 13
3.1.2+dfsg1-1+deb13u1· arm64 · trixieAffected
nvd · 389-ds-base · debian · 13
- [389-ds-base-libs]Affected
Source package: [389-ds-base]
Details (2)
3.1.2+dfsg1-1+deb13u1· amd64 · trixieAffected
nvd · 389-ds-base · debian · 13
3.1.2+dfsg1-1+deb13u1· arm64 · trixieAffected
nvd · 389-ds-base · debian · 13
- [cockpit-389-ds]Affected
Source package: [389-ds-base]
Details (2)
3.1.2+dfsg1-1+deb13u1· all · trixieAffected
nvd · 389-ds-base · debian · 13
3.1.2+dfsg1-1+deb13u1· all · trixieAffected
nvd · 389-ds-base · debian · 13
- [python3-lib389]Affected
Source package: [389-ds-base]
Details (2)
3.1.2+dfsg1-1+deb13u1· all · trixieAffected
nvd · 389-ds-base · debian · 13
3.1.2+dfsg1-1+deb13u1· all · trixieAffected
nvd · 389-ds-base · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_3136-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-11774]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-11774]
- [https://osv.dev/vulnerability/SUSE-SU-2026:3678-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:3686-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:3687-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-11774]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-11774.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2225.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]