Home/CVE/linux-pam (aka Linux PAM) before 1.6.0 allows attackers to cause a denial of service (blocked login process) via mkfifo
CVE

CVE-2024-22365

linux-pam (aka Linux PAM) before 1.6.0 allows attackers to cause a denial of service (blocked login process) via mkfifo

linux-pam (aka Linux PAM) before 1.6.0 allows attackers to cause a denial of service (blocked login process) via mkfifo because the openat call (for protect_dir) lacks O_DIRECTORY.

MEDIUM · CVSS 5.5 EPSS 0.00088
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-664Improper Control of a Resource Through its Lifetime
▤

Affected Products & Versions

1
linux-pam< 1.6.0
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Feb 2024 · 08:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

14
cisa-aa-advisoriesicsa-26-134-16
siemens-csafSSA-577017
msrcCVE-2024-22365
suse-csafopenSUSE-SU-2024:13616-1
usnUSN-6588-2
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2024/01/18/3ExploitMailing ListPatchRelease Notes
https://github.com/linux-pam/linux-pamProduct
https://github.com/linux-pam/linux-pam/commit/031bb5a5d0d950253b68138b498dc93be69a64cbPatch
https://github.com/linux-pam/linux-pam/releases/tag/v1.6.0Release Notes
https://lists.debian.org/debian-lts-announce/2025/09/msg00021.html
https://cert-portal.siemens.com/productcert/html/ssa-577017.html
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