CVE-2024-10041

Hashed-password disclosure via speculative ROP execution

Published Oct 23, 2024 · Updated Jun 29, 2026

Information disclosure in Linux-PAM before 1.6.0 allows local users to read hashed passwords through speculative execution. In pam_unix password verification, get_account_info loads the shadow entry into the authenticating process instead of always delegating retrieval to the unix_chkpwd helper. A low-privileged local user must drive the victim through standard input and train the branch predictor; RHEL 8 and 9 are not exposed while SELinux is enforcing.

CVSS severity4.7
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Linux-PAM before 1.6.0 allows local users to read hashed passwords through speculative execution. In pam_unix password verification, get_account_info loads the shadow entry into the authenticating process instead of always delegating retrieval to the unix_chkpwd helper. A low-privileged local user must drive the victim through standard input and train the branch predictor; RHEL 8 and 9 are not exposed while SELinux is enforcing.

The record

CVE
CVE-2024-10041
Published
Oct 23, 2024
Updated
Jun 29, 2026
Vendor
Red Hat
Product
Red Hat Enterprise Linux 8
Classifications
CWE-922, T1003.008
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Red Hat · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Linux-PAM Project · Linux-PAMversion=1.6.0 <1.6.0
Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportAffected versions are unavailable in this record.

Published CVSS scores

4.7Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-922Insecure Storage of Sensitive Information
T1003.008OS Credential Dumping: /etc/passwd and /etc/shadow

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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