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CVE-2023-53360— NFSv4.2: Rework scratch handling for READ_PLUS (again)

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，该漏洞源于未正确处理READ_PLUS操作的scratch缓冲区，可能导致空指针取消引用或双重释放。

CVSS 9.8 · Critical EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 9

VendorProduct Version RangeStatus
Linux Linux 886959f425b6a936a30b82a297ae3aecb3b8230f< adac9f0ddd2b291c7ce41f549fdb27a13616cff5 affected
fbd2a05f29a95d5b42b294bf47e55a711424965b< a2f4cb206bd94b3f4a7bb05fcdce9525283b5681 affected
fbd2a05f29a95d5b42b294bf47e55a711424965b< ae5d5672f1db711e91db6f52df5cb16ecd8f5692 affected
fbd2a05f29a95d5b42b294bf47e55a711424965b< 303a78052091c81e9003915c521fdca1c7e117af affected
6.4 affected
< 6.4 unaffected
6.4.16≤ 6.4.* unaffected
6.5.3≤ 6.5.* unaffected
… +1 more rows
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I. Basic Information for CVE-2023-53360

Vulnerability Information
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Vulnerability Title
NFSv4.2: Rework scratch handling for READ_PLUS (again)
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: NFSv4.2: Rework scratch handling for READ_PLUS (again) I found that the read code might send multiple requests using the same nfs_pgio_header, but nfs4_proc_read_setup() is only called once. This is how we ended up occasionally double-freeing the scratch buffer, but also means we set a NULL pointer but non-zero length to the xdr scratch buffer. This results in an oops the first time decoding needs to copy something to scratch, which frequently happens when decoding READ_PLUS hole segments. I fix this by moving scratch handling into the pageio read code. I provide a function to allocate scratch space for decoding read replies, and free the scratch buffer when the nfs_pgio_header is freed.
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，该漏洞源于未正确处理READ_PLUS操作的scratch缓冲区，可能导致空指针取消引用或双重释放。
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 886959f425b6a936a30b82a297ae3aecb3b8230f ~ adac9f0ddd2b291c7ce41f549fdb27a13616cff5 -
Linux Linux 6.4 -

II. Public POCs for CVE-2023-53360

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III. Intelligence Information for CVE-2023-53360

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Same Patch Batch · Linux · 2025-09-17 · 56 CVEs total

CVE-2023-53338 9.8 CRITICAL lwt: Fix return values of BPF xmit ops
CVE-2022-50363 9.8 CRITICAL skmsg: pass gfp argument to alloc_sk_msg()
CVE-2022-50373 9.8 CRITICAL fs: dlm: fix race in lowcomms
CVE-2023-53358 8.8 HIGH ksmbd: fix racy issue under cocurrent smb2 tree disconnect
CVE-2023-53354 7.8 HIGH skbuff: skb_segment, Call zero copy functions before using skbuff frags
CVE-2022-50362 7.8 HIGH dmaengine: hisilicon: Add multi-thread support for a DMA channel
CVE-2022-50367 7.8 HIGH fs: fix UAF/GPF bug in nilfs_mdt_destroy
CVE-2022-50368 7.8 HIGH drm/msm/dsi: fix memory corruption with too many bridges
CVE-2023-53340 7.8 HIGH net/mlx5: Collect command failures data only for known commands
CVE-2022-50354 7.8 HIGH drm/amdkfd: Fix kfd_process_device_init_vm error handling
CVE-2022-50355 7.8 HIGH staging: vt6655: fix some erroneous memory clean-up loops
CVE-2023-53335 7.5 HIGH RDMA/cxgb4: Fix potential null-ptr-deref in pass_establish()
CVE-2022-50365 7.5 HIGH skbuff: Account for tail adjustment during pull operations
CVE-2023-53336 media: ipu-bridge: Fix null pointer deref on SSDB/PLD parsing warnings
CVE-2022-50372 cifs: Fix memory leak when build ntlmssp negotiate blob failed
CVE-2022-50359 media: cx88: Fix a null-ptr-deref bug in buffer_prepare()
CVE-2022-50374 Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure
CVE-2022-50357 usb: dwc3: core: fix some leaks in probe
CVE-2023-53337 nilfs2: do not write dirty data after degenerating to read-only
CVE-2023-53368 tracing: Fix race issue between cpu buffer write and swap

Showing top 20 of 56 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53360

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