CVE-2024-40992

MEDIUM EPSS 18.4%
Published Jul 12, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jul 12, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix responder length checking for UD request packets According to the IBA specification: If a UD request packet is detected with an invalid length, the request shall be an invalid request and it shall be silently dropped by the responder. The responder then waits for a new request packet. commit 689c5421bfe0 ("RDMA/rxe: Fix incorrect responder length checking") defers responder length check for UD QPs in function `copy_data`. But it introduces a regression issue for UD QPs. When the packet size is too large to fit in the receive buffer. `copy_data` will return error code -EINVAL. Then `send_data_in` will return RESPST_ERR_MALFORMED_WQE. UD QP will transfer into ERROR state.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
18.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥6.2  –  <6.6.36
linuxlinux_kernel*≥6.7  –  <6.9.7
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any
linuxlinux_kernel6.10any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/163868ec1f6c610d16da9e458fe1dd7d5de97341
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/943c94f41dfe36536dc9aaa12c9efdf548ceb996
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f67ac0061c7614c1548963d3ef1ee1606efd8636
    Patch