CVE-2024-36476

MEDIUM EPSS 12.9%
Published Jan 15, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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Published Jan 15, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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 change ensures the variable is available for subsequent operations that require it. [1] https://lore.kernel.org/linux-rdma/6a1f3e8f-deb0-49f9-bc69-a9b03ecfcda7@fujitsu.com/

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
12.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥5.8  –  <5.10.233
linuxlinux_kernel*≥5.11  –  <5.15.176
linuxlinux_kernel*≥5.16  –  <6.1.124
linuxlinux_kernel*≥6.2  –  <6.6.70
linuxlinux_kernel*≥6.7  –  <6.12.9
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any
linuxlinux_kernel6.13any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/143378075904e78b3b2a810099bcc3b3d82d762f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/32e1e748a85bd52b20b3857d80fd166d22fa455a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6ffb5c1885195ae5211a12b4acd2d51843ca41b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7eaa71f56a6f7ab87957213472dc6d4055862722
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b238f61cc394d5fef27b26d7d9aa383ebfddabb0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fb514b31395946022f13a08e06a435f53cf9e8b3
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/143378075904e78b3b2a810099bcc3b3d82d762f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/32e1e748a85bd52b20b3857d80fd166d22fa455a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6ffb5c1885195ae5211a12b4acd2d51843ca41b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7eaa71f56a6f7ab87957213472dc6d4055862722
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b238f61cc394d5fef27b26d7d9aa383ebfddabb0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fb514b31395946022f13a08e06a435f53cf9e8b3
    Patch