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CVE-2024-36476— RDMA/rtrs: Ensure 'ib_sge list' is accessible

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ib_sge list不可访问。

CVSS 9.8 · Critical EPSS 0.65% · P50

Possible ATT&CK Techniques 1 AI

T1040 · Network Sniffing

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 9cb837480424e78ed585376f944088246685aec3< 7eaa71f56a6f7ab87957213472dc6d4055862722 affected
9cb837480424e78ed585376f944088246685aec3< 143378075904e78b3b2a810099bcc3b3d82d762f affected
9cb837480424e78ed585376f944088246685aec3< 32e1e748a85bd52b20b3857d80fd166d22fa455a affected
9cb837480424e78ed585376f944088246685aec3< b238f61cc394d5fef27b26d7d9aa383ebfddabb0 affected
9cb837480424e78ed585376f944088246685aec3< 6ffb5c1885195ae5211a12b4acd2d51843ca41b0 affected
9cb837480424e78ed585376f944088246685aec3< fb514b31395946022f13a08e06a435f53cf9e8b3 affected
5.8 affected
< 5.8 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-36476

Vulnerability Information
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Vulnerability Title
RDMA/rtrs: Ensure 'ib_sge list' is accessible
Source: CVE Program / CVE List V5
Vulnerability 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/
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ib_sge list不可访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 9cb837480424e78ed585376f944088246685aec3 ~ 7eaa71f56a6f7ab87957213472dc6d4055862722 -
Linux Linux 5.8 -

II. Public POCs for CVE-2024-36476

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III. Intelligence Information for CVE-2024-36476

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Patches & Fixes for CVE-2024-36476 (6)

Same Patch Batch · Linux · 2025-01-15 · 32 CVEs total

CVE-2024-57882 9.8 CRITICAL mptcp: fix TCP options overflow.
CVE-2024-57802 9.4 CRITICAL netrom: check buffer length before accessing it
CVE-2025-21629 8.2 HIGH net: reenable NETIF_F_IPV6_CSUM offload for BIG TCP packets
CVE-2024-57883 7.8 HIGH mm: hugetlb: independent PMD page table shared count
CVE-2024-57857 7.8 HIGH RDMA/siw: Remove direct link to net_device
CVE-2024-57801 7.8 HIGH net/mlx5e: Skip restore TC rules for vport rep without loaded flag
CVE-2024-57795 7.8 HIGH RDMA/rxe: Remove the direct link to net_device
CVE-2024-39282 7.8 HIGH net: wwan: t7xx: Fix FSM command timeout issue
CVE-2024-57896 7.8 HIGH btrfs: flush delalloc workers queue before stopping cleaner kthread during unmount
CVE-2024-57893 7.8 HIGH ALSA: seq: oss: Fix races at processing SysEx messages
CVE-2024-57887 7.8 HIGH drm: adv7511: Fix use-after-free in adv7533_attach_dsi()
CVE-2024-57899 7.6 HIGH wifi: mac80211: fix mbss changed flags corruption on 32 bit systems
CVE-2024-57902 7.3 HIGH af_packet: fix vlan_get_tci() vs MSG_PEEK
CVE-2024-57901 7.3 HIGH af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK
CVE-2024-57895 7.1 HIGH ksmbd: set ATTR_CTIME flags when setting mtime
CVE-2024-57903 net: restrict SO_REUSEPORT to inet sockets
CVE-2024-57884 mm: vmscan: account for free pages to prevent infinite Loop in throttle_direct_reclaim()
CVE-2024-57844 drm/xe: Fix fault on fd close after unbind
CVE-2024-57841 net: fix memory leak in tcp_conn_request()
CVE-2024-57885 mm/kmemleak: fix sleeping function called from invalid context at print message

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-36476

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