Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-97569
Published: September 28, 2026
Vulnerability identifier: #VU152641
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97569
CWE-ID: CWE-703
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 improper handling of deferred completions in the bnxt_en transmit ring when handling transmit traffic with deferred completions. A remote attacker can send a burst of packets that fills the ring followed by a large software UDP segmentation offload packet that cannot fit to cause a denial of service.
Exploitation is possible with rings containing 457 or fewer descriptors under the default CONFIG_MAX_SKB_FRAGS configuration.
Affected software
Linux kernel
How to mitigate CVE-2026-97569
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3