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Workaround
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Thu, 28 May 2026 14:15:00 +0000
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ssvc
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Wed, 27 May 2026 20:15:00 +0000
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| Description | pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/conf.c allocates heap memory proportional to n_devices, a count derived from libxml2 XPath evaluation of the config file, without first enforcing an upper bound. On 32-bit targets (armv7l, i686 -- both listed in the project Makefile), the multiplication n_devices * sizeof(t_pusb_device) wraps around size_t, causing xmalloc() to receive a very small size. Because xmalloc() only calls abort() on NULL return, a small-but-non-NULL allocation is accepted, and subsequent array writes overflow the heap. This vulnerability is fixed in 0.9.1. | |
| Title | pam_usb: Unchecked integer multiplication before xmalloc() in conf.c allows heap-based buffer overflow on 32-bit targets | |
| Weaknesses | CWE-122 CWE-190 |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-28T13:44:27.440Z
Reserved: 2026-05-20T18:25:25.707Z
Link: CVE-2026-48065
Updated: 2026-05-28T13:39:50.119Z
Status : Deferred
Published: 2026-05-27T20:16:40.380
Modified: 2026-05-28T13:57:25.390
Link: CVE-2026-48065
No data.
OpenCVE Enrichment
Updated: 2026-05-27T22:45:44Z