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CVE-2024-42152— nvmet: fix a possible leak when destroy a ctrl during qp establishment

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nvmet模块中在销毁控制器时，如果在qp建立期间，可能存在一个小窗口导致控制器的引用没有被最终释放。

CVSS 7.5 · High EPSS 0.73% · P54

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a< 2f3c22b1d3d7e86712253244797a651998c141fa affected
0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a< b4fed1443a6571d49c6ffe7d97af3bbe5ee6dff5 affected
0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a< 940a71f08ef153ef807f751310b0648d1fa5d0da affected
0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a< 5502c1f1d0d7472706cc1f201aecf1c935d302d1 affected
0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a< 818004f2a380420c19872171be716174d4985e33 affected
0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a< c758b77d4a0a0ed3a1292b3fd7a2aeccd1a169a4 affected
5.6 affected
< 5.6 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-42152

Vulnerability Information
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Vulnerability Title
nvmet: fix a possible leak when destroy a ctrl during qp establishment
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix a possible leak when destroy a ctrl during qp establishment In nvmet_sq_destroy we capture sq->ctrl early and if it is non-NULL we know that a ctrl was allocated (in the admin connect request handler) and we need to release pending AERs, clear ctrl->sqs and sq->ctrl (for nvme-loop primarily), and drop the final reference on the ctrl. However, a small window is possible where nvmet_sq_destroy starts (as a result of the client giving up and disconnecting) concurrently with the nvme admin connect cmd (which may be in an early stage). But *before* kill_and_confirm of sq->ref (i.e. the admin connect managed to get an sq live reference). In this case, sq->ctrl was allocated however after it was captured in a local variable in nvmet_sq_destroy. This prevented the final reference drop on the ctrl. Solve this by re-capturing the sq->ctrl after all inflight request has completed, where for sure sq->ctrl reference is final, and move forward based on that. This issue was observed in an environment with many hosts connecting multiple ctrls simoutanuosly, creating a delay in allocating a ctrl leading up to this race window.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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nvmet模块中在销毁控制器时，如果在qp建立期间，可能存在一个小窗口导致控制器的引用没有被最终释放。
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 0f5be6a4ff7b3f8bf3db15f904e3e76797a43d9a ~ 2f3c22b1d3d7e86712253244797a651998c141fa -
Linux Linux 5.6 -

II. Public POCs for CVE-2024-42152

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III. Intelligence Information for CVE-2024-42152

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Other References for CVE-2024-42152 (5)

Same Patch Batch · Linux · 2024-07-30 · 70 CVEs total

CVE-2024-42108 9.8 CRITICAL net: rswitch: Avoid use-after-free in rswitch_poll()
CVE-2024-42225 8.3 HIGH wifi: mt76: replace skb_put with skb_put_zero
CVE-2024-42117 7.8 HIGH drm/amd/display: ASSERT when failing to find index by plane/stream id
CVE-2024-42103 7.8 HIGH btrfs: fix adding block group to a reclaim list and the unused list during reclaim
CVE-2024-42120 7.8 HIGH drm/amd/display: Check pipe offset before setting vblank
CVE-2024-42104 7.8 HIGH nilfs2: add missing check for inode numbers on directory entries
CVE-2024-42105 7.8 HIGH nilfs2: fix inode number range checks
CVE-2024-42099 7.8 HIGH s390/dasd: Fix invalid dereferencing of indirect CCW data pointer
CVE-2024-42109 7.8 HIGH netfilter: nf_tables: unconditionally flush pending work before notifier
CVE-2024-42111 7.8 HIGH btrfs: always do the basic checks for btrfs_qgroup_inherit structure
CVE-2024-42112 7.8 HIGH net: txgbe: free isb resources at the right time
CVE-2024-42115 7.8 HIGH jffs2: Fix potential illegal address access in jffs2_free_inode
CVE-2024-42162 7.8 HIGH gve: Account for stopped queues when reading NIC stats
CVE-2024-42133 7.6 HIGH Bluetooth: Ignore too large handle values in BIG
CVE-2024-42132 7.6 HIGH bluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX
CVE-2024-42110 7.5 HIGH net: ntb_netdev: Move ntb_netdev_rx_handler() to call netif_rx() from __netif_rx()
CVE-2024-42145 7.5 HIGH IB/core: Implement a limit on UMAD receive List
CVE-2024-42224 7.0 HIGH net: dsa: mv88e6xxx: Correct check for empty list
CVE-2024-42123 7.0 HIGH drm/amdgpu: fix double free err_addr pointer warnings
CVE-2024-42154 tcp_metrics: validate source addr length

Showing top 20 of 70 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42152

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