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CVE-2023-53337— nilfs2: do not write dirty data after degenerating to read-only

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，该漏洞源于在文件系统降级为只读模式后仍尝试写入脏数据，可能导致数据损坏。

AI Predicted 4.3 Difficulty: Theoretical EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 8c26c4e2694a163d525976e804d81cd955bbb40c< bd89073fc7a5d03b1d06b372addbe405e5a925f4 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< e9c5412c5972124776c1b873533eb39e287a4dfa affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 4569a292a84e340e97d178898ad1cfe1a3080a61 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 7c3e662048053802f6b0db3a78e97f4e1f7edc4f affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 13f73ef77baa4764dc1ca4fcbae9cade05b83866 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< a73201c607d8e506358d60aafddda4246bdd9350 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 4005cec6847c06ee191583270b7cdd7e696543cc affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 55f7810632f993cff622a0ddbc7c865892294b61 affected
… +12 more rows
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I. Basic Information for CVE-2023-53337

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
nilfs2: do not write dirty data after degenerating to read-only
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: do not write dirty data after degenerating to read-only According to syzbot's report, mark_buffer_dirty() called from nilfs_segctor_do_construct() outputs a warning with some patterns after nilfs2 detects metadata corruption and degrades to read-only mode. After such read-only degeneration, page cache data may be cleared through nilfs_clear_dirty_page() which may also clear the uptodate flag for their buffer heads. However, even after the degeneration, log writes are still performed by unmount processing etc., which causes mark_buffer_dirty() to be called for buffer heads without the "uptodate" flag and causes the warning. Since any writes should not be done to a read-only file system in the first place, this fixes the warning in mark_buffer_dirty() by letting nilfs_segctor_do_construct() abort early if in read-only mode. This also changes the retry check of nilfs_segctor_write_out() to avoid unnecessary log write retries if it detects -EROFS that nilfs_segctor_do_construct() returned.
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，该漏洞源于在文件系统降级为只读模式后仍尝试写入脏数据，可能导致数据损坏。
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 8c26c4e2694a163d525976e804d81cd955bbb40c ~ bd89073fc7a5d03b1d06b372addbe405e5a925f4 -
Linux Linux 3.10 -

II. Public POCs for CVE-2023-53337

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III. Intelligence Information for CVE-2023-53337

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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-2022-50373 9.8 CRITICAL fs: dlm: fix race in lowcomms
CVE-2022-50363 9.8 CRITICAL skmsg: pass gfp argument to alloc_sk_msg()
CVE-2023-53360 9.8 CRITICAL NFSv4.2: Rework scratch handling for READ_PLUS (again)
CVE-2023-53358 8.8 HIGH ksmbd: fix racy issue under cocurrent smb2 tree disconnect
CVE-2023-53340 7.8 HIGH net/mlx5: Collect command failures data only for known commands
CVE-2022-50368 7.8 HIGH drm/msm/dsi: fix memory corruption with too many bridges
CVE-2022-50367 7.8 HIGH fs: fix UAF/GPF bug in nilfs_mdt_destroy
CVE-2022-50362 7.8 HIGH dmaengine: hisilicon: Add multi-thread support for a DMA channel
CVE-2023-53354 7.8 HIGH skbuff: skb_segment, Call zero copy functions before using skbuff frags
CVE-2022-50355 7.8 HIGH staging: vt6655: fix some erroneous memory clean-up loops
CVE-2022-50354 7.8 HIGH drm/amdkfd: Fix kfd_process_device_init_vm error handling
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-2022-50369 drm/vkms: Fix null-ptr-deref in vkms_release()
CVE-2022-50372 cifs: Fix memory leak when build ntlmssp negotiate blob failed
CVE-2022-50371 led: qcom-lpg: Fix sleeping in atomic
CVE-2022-50370 i2c: designware: Fix handling of real but unexpected device interrupts
CVE-2022-50374 Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure

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-2023-53337

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