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CVE-2023-53456— scsi: qla4xxx: Add length check when parsing nlattrs

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，该漏洞源于未验证nlattr长度，可能导致越界读取。

AI Predicted 5.3 Difficulty: Easy EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80< cfa6a1a79ed6d336fac7a5d87eb5471e4401829f affected
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80< 5925e224cc6edfef57b20447f18323208461309b affected
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80< 47f3be62eab50b8cd7e1ae5fc2c4dae687497c34 affected
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80< 6d65079c69dc1feb817ed71f5bd15e83a7d6832d affected
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80< f61fc650c47849637fa1771a31a11674c824138a affected
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80< 25feffb3fbd51ae81d92c65cebc0e932663828b3 affected
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80< 4ed21975311247bb84e82298eeb359ec0a0fa84d affected
00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80< b018c0440b871d8b001c996e95fa4538bd292de6 affected
… +12 more rows
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I. Basic Information for CVE-2023-53456

Vulnerability Information
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Vulnerability Title
scsi: qla4xxx: Add length check when parsing nlattrs
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla4xxx: Add length check when parsing nlattrs There are three places that qla4xxx parses nlattrs: - qla4xxx_set_chap_entry() - qla4xxx_iface_set_param() - qla4xxx_sysfs_ddb_set_param() and each of them directly converts the nlattr to specific pointer of structure without length checking. This could be dangerous as those attributes are not validated and a malformed nlattr (e.g., length 0) could result in an OOB read that leaks heap dirty data. Add the nla_len check before accessing the nlattr data and return EINVAL if the length check fails.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于未验证nlattr长度，可能导致越界读取。
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 00c31889f7513e9ffa6b2b4de8ad6d7f59a61c80 ~ cfa6a1a79ed6d336fac7a5d87eb5471e4401829f -
Linux Linux 3.2 -

II. Public POCs for CVE-2023-53456

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III. Intelligence Information for CVE-2023-53456

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Patches & Fixes for CVE-2023-53456 (1)

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-2023-53465 7.8 HIGH soundwire: qcom: fix storing port config out-of-bounds
CVE-2023-53485 7.8 HIGH fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev
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-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-2022-50421 7.8 HIGH rpmsg: char: Avoid double destroy of default endpoint
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 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53456

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