CVE-2025-21927
Critical
Description
In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() nvme_tcp_recv_pdu() doesn't check the validity of the header length. When header digests are enabled, a target might send a packet with an invalid header length (e.g. 255), causing nvme_tcp_verify_hdgst() to access memory outside the allocated area and cause memory corruptions by overwriting it with the calculated digest. Fix this by rejecting packets with an unexpected header length.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Linux Kernel
PublishedApr 1, 2025
First seenApr 1, 2025
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- linux linux_kernel6.12.19, 6.13.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.0 ≤ v < 6.12.19, 6.13 ≤ v < 6.13.7, 6.14 | 6.12.19, 6.13.7 |
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