CVE catalog
CVE-2026-58374
In hostapd before 2.12, a missing bounds check in AP-mode Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing allows an unauthenticated attacker within wireless range to
- Severity
- High · CVSS 7.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.29% · Oct 25, 2026
In hostapd before 2.12, a missing bounds check in AP-mode Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing allows an unauthenticated attacker within wireless range to send a crafted management frame containing a malformed Multi-Link Element or Per-STA Profile subelement. In hostapd_process_ml_assoc_req() in src/ap/ieee802_11_eht.c, the received link_id field can be parsed as value 15, but the corresponding links[] storage only has valid entries for lower link IDs (0 through 14). This causes an out-of-bounds write / small memory corruption during association processing before the 4-way handshake. The attack does not require network credentials, prior authentication, or user interaction. The confirmed practical impact is denial of service through hostapd process termination. This affects hostapd v2.11 and newer development snapshots before v2.12 when built with CONFIG_IEEE80211BE enabled. The issue is fixed in hostapd v2.12 and the upstream 2026-1 fixes.
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 | wpa | sid | 2:2.11-4 | not affected |
| Debian | wpa | forky | 2:2.11-4 | not affected |
| Debian | wpa | trixie | 2:2.10-24 | not affected |
| Debian | wpa | bookworm | 2:2.10-12+deb12u3 | not affected |
| Debian | wpa | bookworm-security | 2:2.10-12+deb12u2 | not affected |
| Cpe | hostapd | Not reported | Not reported | unknown |
| Suse | wpa_supplicant | linux micro 6.2 | 2.11-160000.4.1 | fixed |
| Suse | wpa_supplicant | linux enterprise server 16.0 | 2.11-160000.4.1 | fixed |
| Suse | wpa_supplicant | linux enterprise server for sap applications 16.0 | 2.11-160000.4.1 | fixed |
| Opensuse | wpa_supplicant | leap 16.0 | 2.11-160000.4.1 | fixed |
| Opensuse | hostapd | leap 16.0 | 2.11-bp160.3.1 | fixed |
| Opensuse | hostapd | tumbleweed | 2.11-4.1 | fixed |
| Opensuse | wpa_supplicant | tumbleweed | 2.11-7.1 | fixed |
| Cpe | hostapd | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | wpa | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | wpa | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | wpa | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | wpa | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Suse | wpa_supplicant | rpm | linux micro 6.2 | 2.11-160000.4.1 | Not reported | SUSE-SU-2026:22931-1 | Not reported |
| Suse | wpa_supplicant | rpm | linux enterprise server 16.0 | 2.11-160000.4.1 | Not reported | SUSE-SU-2026:22851-1 | Not reported |
| Suse | wpa_supplicant | rpm | linux enterprise server for sap applications 16.0 | 2.11-160000.4.1 | Not reported | SUSE-SU-2026:22851-1 | Not reported |
| Opensuse | wpa_supplicant | rpm | leap 16.0 | 2.11-160000.4.1 | Not reported | OPENSUSE-SU-2026:21415-1 | Not reported |
| Opensuse | hostapd | rpm | leap 16.0 | 2.11-bp160.3.1 | Not reported | OPENSUSE-SU-2026:21360-1 | Not reported |
| Opensuse | hostapd | rpm | tumbleweed | 2.11-4.1 | Not reported | OPENSUSE-SU-2026:11278-1 | Not reported |
| Opensuse | wpa_supplicant | rpm | tumbleweed | 2.11-7.1 | Not reported | OPENSUSE-SU-2026:11253-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [wpa_supplicant-gui]Unknown
Source package: [wpa_supplicant]
Details (1)
2.12-1.1· x86_64 · tumbleweedUnknown · Fixed:
2.11-7.1Version impact unknown
nvd · wpa_supplicant · opensuse · tumbleweed
- [hostapd]Fixed
Source package: [hostapd]
Details (1)
2.11-5.1· x86_64 · tumbleweedFixed · Fixed:
2.11-4.1nvd · hostapd · opensuse · tumbleweed
- [wpa_supplicant]Fixed
Source package: [wpa_supplicant]
Details (1)
2.12-1.1· x86_64 · tumbleweedFixed · Fixed:
2.11-7.1nvd · wpa_supplicant · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [eapoltest]Not affected
Source package: [wpa]
Details (4)
2:2.10-12+deb12u3· amd64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u3· arm64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· amd64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· arm64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
- [hostapd]Not affected
Source package: [wpa]
Details (4)
2:2.10-12+deb12u3· amd64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u3· arm64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· amd64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· arm64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
- [libwpa-client-dev]Not affected
Source package: [wpa]
Details (4)
2:2.10-12+deb12u3· amd64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u3· arm64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· amd64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· arm64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
- [wpagui]Not affected
Source package: [wpa]
Details (4)
2:2.10-12+deb12u3· amd64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u3· arm64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· amd64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· arm64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
- [wpasupplicant]Not affected
Source package: [wpa]
Details (4)
2:2.10-12+deb12u3· amd64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u3· arm64 · bookwormNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· amd64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
2:2.10-12+deb12u2· arm64 · bookworm-securityNot affected
nvd · wpa · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11253-1.json]
- [https://git.w1.fi/cgit/hostap/commit/?id=46dd5a4ffc9bcf44cf8fc45120b3e1e5ec922187]
- [https://git.w1.fi/cgit/hostap/commit/?id=aa9d345887389a251c63a3781d2ad2940d079193]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-58374]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-58374]
- [https://osv.dev/vulnerability/SUSE-SU-2026:22851-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:22931-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-58374]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11253-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11278-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21360-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21415-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-58374]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-58374.json]
- [https://w1.fi/security/2026-1/]
- [https://w1.fi/security/2026-1/missing-ml-parsing-validation.txt]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2154.json]
- [https://www.openwall.com/lists/oss-security/2026/06/30/1]
[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]