Allocation of Resources Without Limits or Throttling in Linux kernel - CVE-2026-80788
Published: September 5, 2026
Vulnerability identifier: #VU147139
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80788
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource allocation in nvmet_tcp_map_data() when processing a command containing an oversized SGL. A remote attacker can send a command with an oversized SGL to cause a denial of service.
Systems configured to panic on kernel warnings can panic when the allocation triggers a page-allocator warning.
Affected software
Linux kernel
How to mitigate CVE-2026-80788
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/737a3b535247226f6e1a7988fd9d6e63e7d6fc71
- https://git.kernel.org/stable/c/7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e
- https://git.kernel.org/stable/c/7fd6da0f28932442b51658bac4ff55565ca9b377
- https://git.kernel.org/stable/c/86cc450022473c4a29b43a09f3ec22a9ef566dac
- https://git.kernel.org/stable/c/8d01f0d0e96485e39ad89b859ef85e1dc3020465
- https://git.kernel.org/stable/c/9b770e40bc00381e5ebf53653de5776773415be3
- https://git.kernel.org/stable/c/9c95f7e66c62ee6c6abedcf1c04311f430ff5833
- https://git.kernel.org/stable/c/c509f20be1cabda3087810bb2d658d66b3f31f35
- https://git.kernel.org/stable/c/e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741