CVE-2026-48983Disclosure

LOWCVSS 5.8 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-user pad directory creation. pam_usb uses a check-then-act pattern: it calls lstat() to test for existence and then calls mkdir() separately to create the directory. A local attacker can win the race between these calls by replacing the target path with a symlink to a directory they control. If successful, one-time pad files may be written to an attacker-controlled location, potentially exposing future pad values before use or disrupting authentication. This issue has been fixed in version 0.9.2.

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0.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-367

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

Patch or workaround signal is available
2 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 2 signals
Disclosure: 2 classified signals
2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Infoflowcloud@infoflowcloud136d
Disclosure
🚨*CVE* CVE-2026-48983 pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-u… https://www.cve.org/CVERecord?id=CVE-2026-48983 ----- Traducción: CVE-2026-48983 pam… http://infoflow.cloud`
Post summary
The post announces CVE-2026-48983 as a symlink race condition in pam_usb, but does not provide any PoC, exploit code, or evidence of active exploitation.
0000033
82 followersView on X
CVE@CVEnew136d
Disclosure
CVE-2026-48983 pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-u… https://www.cve.org/CVERecord?id=CVE-2026-48983
Post summary
A symlink race condition in pam_usb affecting versions before 0.9.2 was disclosed, with the issue fixed in 0.9.2; no PoC, exploit, or active exploitation is reported.
00000178
57.6K followersView on X

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