CVE-2026-53176: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
IB/isert: Reject login PDUs shorter than ISERHEADERSLEN
Other sources
In the Linux kernel, the following vulnerability has been resolved:
— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.143.1-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.187-1Fixed in 6.12.107-1Fixed in 7.2.6-1Fixed in 7.2.7-1 - Compensating control
In drivers/infiniband/ulp/isert/ib_isert.c, update isert_login_recv_done() to reject any login PDU shorter than ISER_HEADERS_LEN (76 bytes) before subtracting ISER_HEADERS_LEN from wc->byte_len.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53176?
CVE-2026-53176 has a critical severity rating of 9.8.
How do I fix CVE-2026-53176?
To fix CVE-2026-53176, upgrade to the latest patched version of the Linux kernel that addresses this vulnerability.
What systems are affected by CVE-2026-53176?
CVE-2026-53176 affects the Linux kernel and specifically the Microsoft azl3 kernel 6.6.141.1-1.
What type of vulnerability is CVE-2026-53176?
CVE-2026-53176 is a vulnerability in the IB/isert component of the Linux kernel, related to improper handling of login PDUs.
Can CVE-2026-53176 lead to data compromise?
Yes, the vulnerability can lead to a compromise of confidentiality, integrity, and availability, as indicated by its impact on those attributes.