CVE-2025-21993
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic()
In the Linux kernel, the following vulnerability has been resolved: iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic() 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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 138fe4e069798d9aa948a5402ff15e58f483ee4e | affected | git | a858cd58dea06cf85b142673deea8c5d87f11e70 | Unavailable | None listed |
| 138fe4e069798d9aa948a5402ff15e58f483ee4e | affected | git | f763c82db8166e28f45b7cc4a5398a7859665940 | Unavailable | None listed |
| 138fe4e069798d9aa948a5402ff15e58f483ee4e | affected | git | b388e185bfad32bfed6a97a6817f74ca00a4318f | Unavailable | None listed |
| 138fe4e069798d9aa948a5402ff15e58f483ee4e | affected | git | 9bfa80c8aa4e06dff55a953c3fffbfc68a3a3b1c | Unavailable | None listed |
| 138fe4e069798d9aa948a5402ff15e58f483ee4e | affected | git | 2d1eef248107bdf3d5a69d0fde04c30a79a7bf5d | Unavailable | None listed |
| 138fe4e069798d9aa948a5402ff15e58f483ee4e | affected | git | b253660fac5e0e9080d2c95e3a029e1898d49afb | Unavailable | None listed |
| 138fe4e069798d9aa948a5402ff15e58f483ee4e | affected | git | c1c6e527470e5eab0b2d57bd073530fbace39eab | Unavailable | None listed |
| 138fe4e069798d9aa948a5402ff15e58f483ee4e | affected | git | 07e0d99a2f701123ad3104c0f1a1e66bce74d6e5 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.26 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.26 | Unavailable | None listed |
| 5.4.292 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.236 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.180 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.132 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.84 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.20 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.13.8 | unaffected | semver | Unavailable | 6.13.* | None listed |
| 6.14 | unaffected | original_commit_for_fix | Unavailable | * | None listed |