CVE-2026-68742— Sssd: sssd: nss responder out-of-bounds read via unchecked addrlen in gethostbyaddr
Quick assessment
Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Red Hat SSSD是美国Red Hat公司的一款身份认证与权限管理软件。 Red Hat SSSD存在缓冲区错误漏洞，该漏洞源于sss_nss_protocol_parse_addr()函数未验证addrlen字段与剩余数据包体大小，可能导致本地攻击者通过向NSS responder套接字发送特制GETHOSTBYADDR请求，造成越界读取和进程崩溃，导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 7
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 6 | any |
unaffected |
| Red Hat | Red Hat Enterprise Linux 7 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 8 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 9 | any |
affected |
| Red Hat | Red Hat OpenShift Container Platform 4 | any |
affected |
any |
affected |
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-68742
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Sssd: sssd: nss responder out-of-bounds read via unchecked addrlen in gethostbyaddr
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate the addrlen field against the remaining packet body size. A local attacker can exploit this via a crafted GETHOSTBYADDR request to the NSS responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat SSSD 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat SSSD是美国Red Hat公司的一款身份认证与权限管理软件。 Red Hat SSSD存在缓冲区错误漏洞，该漏洞源于sss_nss_protocol_parse_addr()函数未验证addrlen字段与剩余数据包体大小，可能导致本地攻击者通过向NSS responder套接字发送特制GETHOSTBYADDR请求，造成越界读取和进程崩溃，导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | - |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 | - |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 | - |
cpe:/a:redhat:openshift:4
|
|
II. Public POCs for CVE-2026-68742
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-68742
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-68742 (2)
Same Patch Batch · Red Hat · 2026-08-03 · 6 CVEs total
| CVE-2026-6695 | 5.5 MEDIUM | Gimp: gimp: remote code execution via crafted paa file |
| CVE-2026-6694 | 5.5 MEDIUM | Gimp: gimp file-png plugin: denial of service via oversized apng trns chunk |
| CVE-2026-18651 | 5.4 MEDIUM | 389-ds-base: 389-ds-base: sasl plain bind installs connection credentials before account-l |
| CVE-2026-18477 | 4.4 MEDIUM | Tar: tar: toctou in incremental dumpdir 'x' rename handling allows restore path escape |
| CVE-2026-18508 | 4.4 MEDIUM | Tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling ar |
IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 10
-
CVE-2026-103641
Gegl: gegl04: gegl: out-of-bounds read in the radiance hdr u -
CVE-2026-103399
Libsoup: soupserver: http/1 request smuggling via undrained -
CVE-2026-103242
Rpm: heap-based buffer overflow write in hex2binv() via a mi -
CVE-2026-102560
Libsoup: libsoup: heap buffer overflow during outgoing perme -
CVE-2026-102559
Libsoup: libsoup: heap buffer overflow during websocket clie
Same vendor: Red Hat
-
CVE-2026-104988
Pki-core: dogtag-pki: redhat-pki: pki: est fullcmc authentic -
CVE-2026-95512
Freetype: freetype: denial of service via repeated subroutin -
CVE-2026-86345
389-ds-base: 389-ds-base: starttls plaintext-buffer retentio -
CVE-2026-86344
389-ds-base: 389-ds-base: unauthenticated worker-thread-pool -
CVE-2026-103884
Keycloak-services: keycloak-services: path traversal in x.50
Same weakness: CWE-125
-
CVE-2026-104433
Mooncake before 0.3.12 Out-of-Bounds Read via P2P Handshake -
CVE-2026-79896
Fortra BoKS Manager boks_portmux TLS ClientHello out-of-boun -
CVE-2026-103678
Tnef: heap out-of-bounds read in get_rtf_data_from_buf() via -
CVE-2026-103641
Gegl: gegl04: gegl: out-of-bounds read in the radiance hdr u -
CVE-2026-47544
NVIDIA vGPU Linux越界读取致代码执行漏洞
V. Comments for CVE-2026-68742
No comments yet