The function does not validate that the length parameter is non-negative. If a negative value (e.g. -1) is supplied, the expression length + 1u causes an integer wraparound, resulting in a zero-byte allocation. The subsequent call to getrandom(data, length, GRND_NONBLOCK) passes the original negative value, which is implicitly converted to a large unsigned value (typically SIZE_MAX). This can result in writes beyond the allocated buffer, leading to heap memory corruption and application crash (denial of service).
In common usage, the length argument is typically hardcoded by the caller, which reduces the likelihood of attacker-controlled exploitation. Applications that pass untrusted input to this parameter may be affected.
No advisories yet.
Solution
Update to version 0.55 or later
Workaround
No workaround given by the vendor.
Tue, 17 Feb 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
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Tue, 17 Feb 2026 09:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Ddick
Ddick crypt::urandom |
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| Vendors & Products |
Ddick
Ddick crypt::urandom |
Mon, 16 Feb 2026 21:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Crypt::URandom versions from 0.41 before 0.55 for Perl is vulnerable to a heap buffer overflow in the XS function crypt_urandom_getrandom(). The function does not validate that the length parameter is non-negative. If a negative value (e.g. -1) is supplied, the expression length + 1u causes an integer wraparound, resulting in a zero-byte allocation. The subsequent call to getrandom(data, length, GRND_NONBLOCK) passes the original negative value, which is implicitly converted to a large unsigned value (typically SIZE_MAX). This can result in writes beyond the allocated buffer, leading to heap memory corruption and application crash (denial of service). In common usage, the length argument is typically hardcoded by the caller, which reduces the likelihood of attacker-controlled exploitation. Applications that pass untrusted input to this parameter may be affected. | |
| Title | Crypt::URandom versions from 0.41 before 0.55 for Perl is vulnerable to a heap buffer overflow in the XS function crypt_urandom_getrandom() | |
| Weaknesses | CWE-122 CWE-1284 |
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| References |
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Projects
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Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-02-17T14:48:49.595Z
Reserved: 2026-02-13T15:45:19.206Z
Link: CVE-2026-2474
Updated: 2026-02-17T14:48:44.873Z
Status : Received
Published: 2026-02-16T21:22:18.107
Modified: 2026-02-17T15:16:23.760
Link: CVE-2026-2474
No data.
OpenCVE Enrichment
Updated: 2026-02-17T08:49:00Z