In the Linux kernel, the following vulnerability has been resolved:
scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done()
A malicious or compromised VIO server can return a num_written value in the
discover targets MAD response that exceeds max_targets. This value is
stored directly in vhost->num_targets without validation, and is then used
as the loop bound in ibmvfc_alloc_targets() to index into disc_buf[], which
is only allocated for max_targets entries. Indices at or beyond max_targets
access kernel memory outside the DMA-coherent allocation. The
out-of-bounds data is subsequently embedded in Implicit Logout and PLOGI
MADs that are sent back to the VIO server, leaking kernel memory.
Fix by clamping num_written to max_targets before storing it.
References
Configurations
Configuration 1 (hide)
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History
07 May 2026, 18:28
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/394a1cac3c12fdd7d77f19ccfd222ab5ff87ef89 - Patch | |
| References | () https://git.kernel.org/stable/c/4ed727e35b0ab17d3eeeb1e8023768396e2be161 - Patch | |
| References | () https://git.kernel.org/stable/c/61d099ac4a7a8fb11ebdb6e2ec8d77f38e77362f - Patch | |
| References | () https://git.kernel.org/stable/c/786f10b1966e485046839f992e89f2c18cbd1983 - Patch | |
| References | () https://git.kernel.org/stable/c/a007246cb6c9ebdc93dafbf63cc2d43d98f402cc - Patch | |
| References | () https://git.kernel.org/stable/c/bae4df0a643fa7f84663473aa3082a9c2ed139db - Patch | |
| References | () https://git.kernel.org/stable/c/d1466bf991b2343cf2ba8336e440c8faf3cbb780 - Patch | |
| References | () https://git.kernel.org/stable/c/d842348f8a00d5b1d7358f207eb34ffcf5b16df3 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
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| CWE | CWE-125 | |
| First Time |
Linux linux Kernel
Linux |
27 Apr 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 8.1 |
22 Apr 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-22 14:16
Updated : 2026-05-07 18:28
NVD link : CVE-2026-31464
Mitre link : CVE-2026-31464
CVE.ORG link : CVE-2026-31464
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-125
Out-of-bounds Read