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CVE-2024-22365

19
FAUCET Score

CVE-2024-22365 is a denial-of-service vulnerability affecting Linux PAM (linux-pam) versions prior to 1.6.0. It allows a local attacker to block login processes by exploiting a missing O_DIRECTORY flag in an openat call related to mkfifo. With a CVSS score of 5.5 (Medium), this vulnerability requires local access and low privileges, but does not involve user interaction, leading to high availability impact. Currently, there is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.6.0CPE matchmatch criteria
cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 91st percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (17)

denopatch availablevia llm_extracted
View patch
github_advisorypatch availablevia nvd_reference
View patch
keraspatch availablevia llm_extracted
View patch
microsoftpatch availablevia msrc
Product: azl3 pam 1.5.3-4 on Azure Linux 3.0Fixed in: 1.5.3-2
microsoftpatch availablevia msrc
Product: cbl2 pam 1.5.1-7 on CBL Mariner 2.0Fixed in: 1.5.1-6
microsoftpatch availablevia msrc
Product: azl3 pam 1.5.3-2 on Azure Linux 3.0Fixed in: 1.5.3-2
microsoftpatch availablevia msrc
Product: 17446-16823Fixed in: 1.5.1-6
microsoftpatch availablevia msrc
Product: 19916-17086Fixed in: 1.5.1-6
microsoftpatch availablevia msrc
Product: 17818-17084Fixed in: 1.5.3-2
microsoftpatch availablevia msrc
Product: 17599-17084Fixed in: 1.5.3-2
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 1.5.3-2
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 1.5.3-2
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 1.5.1-6
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 1.5.1-6
microsoftpatch availablevia msrc
Product: cbl2 pam 1.5.1-6 on CBL Mariner 2.0Fixed in: 1.5.1-6
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: pam-0:1.5.1-19.el9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: pam-0:1.3.1-33.el8
View patch

Vendor Advisories (7)

microsoft2024-Nov/CVE-2024-22365

CVE-2024-22365

Nov 12, 2024
denollm-deno-b67a3af2ce0be075CRITICAL

HP ThinPro 8.0 SP 9 Security Updates

Jun 17, 2024
kerasllm-keras-7d8c31fee70361dcCRITICAL

HP ThinPro 8.0 SP 9 Security Updates

Jun 17, 2024
denollm-deno-650ac71876afb4f8CRITICAL

HP ThinPro 8.1 SP 2 Security Updates

Apr 12, 2024
kerasllm-keras-d13bbd8768a57997CRITICAL

HP ThinPro 8.1 SP 2 Security Updates

Apr 12, 2024
microsoft2024-Feb/CVE-2024-22365Moderate

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.

Feb 13, 2024
redhatCVE-2024-22365Moderate

pam: allowing unprivileged user to block another user namespace

Jan 18, 2024

References

cert-portal.siemens.com / productcert/html/ssa-577017.html
cert-portal.siemens.com / productcert/html/ssa-794697.html
lists.debian.org / debian-lts-announce/2025/09/msg00021.html
github.com / linux-pam/linux-pam
Product
github.com / linux-pam/linux-pam/commit/031bb5a5d0d950253b68138b498dc93be69a64cb
Patch
github.com / linux-pam/linux-pam/releases/tag/v1.6.0
Release Notes
openwall.com / lists/oss-security/2024/01/18/3
ExploitMailing ListPatchRelease Notes