CVE-2023-53463— ibmvnic: Do not reset dql stats on NON_FATAL err
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NON_FATAL错误时重置dql统计信息，可能导致字节队列限制算法错误。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting InterpreterAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 0d973388185d49add56b81ca82fa5e4348019df8< b8aedf29db1280c83191fc9579ae605791faf97f |
affected |
0d973388185d49add56b81ca82fa5e4348019df8< f67ef8f9f6776e2b2073cad7c5cf29de850f83d7 |
affected | ||
0d973388185d49add56b81ca82fa5e4348019df8< 91a0632e73070928aafeb36b3cc676843c716931 |
affected | ||
0d973388185d49add56b81ca82fa5e4348019df8< 48538ccb825b05544ec308a509e2cc9c013402db |
affected | ||
5.11 |
affected | ||
< 5.11 |
unaffected | ||
5.15.121≤ 5.15.* |
unaffected | ||
6.1.39≤ 6.1.* |
unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2023-53463
Vulnerability Information
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Vulnerability Title
ibmvnic: Do not reset dql stats on NON_FATAL err
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ibmvnic: Do not reset dql stats on NON_FATAL err
All ibmvnic resets, make a call to netdev_tx_reset_queue() when
re-opening the device. netdev_tx_reset_queue() resets the num_queued
and num_completed byte counters. These stats are used in Byte Queue
Limit (BQL) algorithms. The difference between these two stats tracks
the number of bytes currently sitting on the physical NIC. ibmvnic
increases the number of queued bytes though calls to
netdev_tx_sent_queue() in the drivers xmit function. When, VIOS reports
that it is done transmitting bytes, the ibmvnic device increases the
number of completed bytes through calls to netdev_tx_completed_queue().
It is important to note that the driver batches its transmit calls and
num_queued is increased every time that an skb is added to the next
batch, not necessarily when the batch is sent to VIOS for transmission.
Unlike other reset types, a NON FATAL reset will not flush the sub crq
tx buffers. Therefore, it is possible for the batched skb array to be
partially full. So if there is call to netdev_tx_reset_queue() when
re-opening the device, the value of num_queued (0) would not account
for the skb's that are currently batched. Eventually, when the batch
is sent to VIOS, the call to netdev_tx_completed_queue() would increase
num_completed to a value greater than the num_queued. This causes a
BUG_ON crash:
ibmvnic 30000002: Firmware reports error, cause: adapter problem.
Starting recovery...
ibmvnic 30000002: tx error 600
ibmvnic 30000002: tx error 600
ibmvnic 30000002: tx error 600
ibmvnic 30000002: tx error 600
------------[ cut here ]------------
kernel BUG at lib/dynamic_queue_limits.c:27!
Oops: Exception in kernel mode, sig: 5
[....]
NIP dql_completed+0x28/0x1c0
LR ibmvnic_complete_tx.isra.0+0x23c/0x420 [ibmvnic]
Call Trace:
ibmvnic_complete_tx.isra.0+0x3f8/0x420 [ibmvnic] (unreliable)
ibmvnic_interrupt_tx+0x40/0x70 [ibmvnic]
__handle_irq_event_percpu+0x98/0x270
---[ end trace ]---
Therefore, do not reset the dql stats when performing a NON_FATAL reset.
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NON_FATAL错误时重置dql统计信息，可能导致字节队列限制算法错误。
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
II. Public POCs for CVE-2023-53463
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total
| CVE-2023-53517 | 9.8 CRITICAL | tipc: do not update mtu if msg_max is too small in mtu negotiation |
| CVE-2023-53454 | 8.8 HIGH | HID: multitouch: Correct devm device reference for hidinput input_dev name |
| CVE-2025-39918 | 8.8 HIGH | wifi: mt76: fix linked list corruption |
| CVE-2025-39919 | 8.8 HIGH | wifi: mt76: mt7996: add missing check for rx wcid entries |
| CVE-2022-50442 | 8.4 HIGH | fs/ntfs3: Validate buffer length while parsing index |
| CVE-2023-53493 | 8.4 HIGH | accel/qaic: tighten bounds checking in decode_message() |
| CVE-2022-50421 | 7.8 HIGH | rpmsg: char: Avoid double destroy of default endpoint |
| CVE-2023-53484 | 7.8 HIGH | lib: cpu_rmap: Avoid use after free on rmap->obj array entries |
| CVE-2022-50440 | 7.8 HIGH | drm/vmwgfx: Validate the box size for the snooped cursor |
| CVE-2022-50454 | 7.8 HIGH | drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() |
| CVE-2025-39924 | 7.8 HIGH | erofs: fix invalid algorithm for encoded extents |
| CVE-2023-53510 | 7.8 HIGH | scsi: ufs: core: Fix handling of lrbp->cmd |
| CVE-2023-53465 | 7.8 HIGH | soundwire: qcom: fix storing port config out-of-bounds |
| CVE-2025-39927 | 7.8 HIGH | ceph: fix race condition validating r_parent before applying state |
| CVE-2023-53506 | 7.8 HIGH | udf: Do not bother merging very long extents |
| CVE-2022-50437 | 7.8 HIGH | drm/msm/hdmi: fix memory corruption with too many bridges |
| CVE-2023-53495 | 7.8 HIGH | net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() |
| CVE-2023-53494 | 7.8 HIGH | crypto: xts - Handle EBUSY correctly |
| CVE-2022-50432 | 7.8 HIGH | kernfs: fix use-after-free in __kernfs_remove |
| CVE-2023-53492 | 7.8 HIGH | netfilter: nf_tables: do not ignore genmask when looking up chain by id |
Showing top 20 of 169 CVEs. View all on vendor page → →
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V. Comments for CVE-2023-53463
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