CVE-2026-75893 Details
Description
In osmo-bsc from 1.0.1 through 1.14.1 a heap based buffer overflow issue was found in the ipaccess_proxy_read_msg() function via IPA frame lengths.
A heap-based buffer overflow vulnerability has been identified in Osmocom's Osmo-BSC (versions 1.0.1 through 1.14.1) within the ipaccess_proxy_read_msg() function. The issue arises from the handling of IPA frame lengths, where the function reads the 16-bit length from the wire header and uses it as the count for the recv() function. This is done without verifying the length against the available buffer space, allowing a peer to send a larger length that could overwrite memory beyond the allocated heap buffer, leading to a heap buffer overflow.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 18, 2026CISA-ADP
Assessed Sep 21, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cgit.osmocom.org/osmo-bsc/commit/?id=2852a03c153cd9418c2a86d0b2193ac41169dbb7 | redhat-cnalr | Source CodeVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | redhat-cnalr |
Affected Products
| Product | Versions |
|---|---|
| OsmoBSC | >= 1.0.1, <= 1.14.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 21, 2026 | CVE Modified | CISA-ADP |
| Sep 18, 2026 | New CVE Received | redhat-cnalr |