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CVE-2024-36476

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs: Ensure 'ib_sge list' is accessible Move the declaration of the 'ib_sge list' variable outside the 'always_invalidate…

Published Jan 15, 2025CWE-476EPSS 0.64%

Overview

CVE-2024-36476 is a critical-severity vulnerability. It was published on January 15, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rtrs: Ensure 'ib_sge list' is accessible

Move the declaration of the 'ib_sge list' variable outside the

'always_invalidate' block to ensure it remains accessible for use

throughout the function.

Previously, 'ib_sge list' was declared within the 'always_invalidate'

block, limiting its accessibility, then caused a

'BUG: kernel NULL pointer dereference'[1].

? __die_body.cold+0x19/0x27

? page_fault_oops+0x15a/0x2d0

? search_module_extables+0x19/0x60

? search_bpf_extables+0x5f/0x80

? exc_page_fault+0x7e/0x180

? asm_exc_page_fault+0x26/0x30

? memcpy_orig+0xd5/0x140

rxe_mr_copy+0x1c3/0x200 [rdma_rxe]

? rxe_pool_get_index+0x4b/0x80 [rdma_rxe]

copy_data+0xa5/0x230 [rdma_rxe]

rxe_requester+0xd9b/0xf70 [rdma_rxe]

? finish_task_switch.isra.0+0x99/0x2e0

rxe_sender+0x13/0x40 [rdma_rxe]

do_task+0x68/0x1e0 [rdma_rxe]

process_one_work+0x177/0x330

worker_thread+0x252/0x390

? __pfx_worker_thread+0x10/0x10

This c

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/143378075904e78b3b2a810099bcc3b3d82d762fRefgit.kernel.org/stable/c/32e1e748a85bd52b20b3857d80fd166d22fa455aRefgit.kernel.org/stable/c/6ffb5c1885195ae5211a12b4acd2d51843ca41b0Refgit.kernel.org/stable/c/7eaa71f56a6f7ab87957213472dc6d4055862722Refgit.kernel.org/stable/c/b238f61cc394d5fef27b26d7d9aa383ebfddabb0Refgit.kernel.org/stable/c/fb514b31395946022f13a08e06a435f53cf9e8b3Reflists.debian.org/debian-lts-announce/2025/03/msg00001.htmlReflists.debian.org/debian-lts-announce/2025/03/msg00002.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-36476?

CVE-2024-36476 is a critical-severity vulnerability. It was published on January 15, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-36476?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-36476?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-36476?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-36476 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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