AZL-59892
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-59892.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-59892
- Upstream
- Published
- 2025-04-02T13:15:43Z
- Modified
- 2026-04-01T05:19:33.861929Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- CVE-2025-21993 affecting package kernel for versions less than 6.6.85.1-2
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iscsiibft: Fix UBSAN shift-out-of-bounds warning in ibftattrshownic()
When performing an iSCSI boot using IPv6, iscsistart still reads the /sys/firmware/ibft/ethernetX/subnet-mask entry. Since the IPv6 prefix length is 64, this causes the shift exponent to become negative, triggering a UBSAN warning. As the concept of a subnet mask does not apply to IPv6, the value is set to ~0 to suppress the warning message.
- References