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CVE-2023-54140— nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse

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，该漏洞源于重用已丢弃的缓冲区，可能导致内核警告或系统崩溃。

CVSS 7.8 · High EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1564 · Hide Artifacts

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 8c26c4e2694a163d525976e804d81cd955bbb40c< 473795610594f261e98920f0945550314df36f07 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< d95e403588738c7ec38f52b9f490b15e7745d393 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 99a73016a5e12a09586a96f998e91f9ea145cd00 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< f1d637b63d8a27ac3386f186a694907f2717fc13 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< b911bef132a06de01a745c6a24172d6db7216333 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 4da07e958bfda2d69d83db105780e8916e3ac02e affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 46c11be2dca295742a5508ea910a77f7733fb7f4 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< b308b3eabc429649b5501d36290cea403fbd746c affected
… +12 more rows
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I. Basic Information for CVE-2023-54140

Vulnerability Information
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Vulnerability Title
nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse A syzbot stress test using a corrupted disk image reported that mark_buffer_dirty() called from __nilfs_mark_inode_dirty() or nilfs_palloc_commit_alloc_entry() may output a kernel warning, and can panic if the kernel is booted with panic_on_warn. This is because nilfs2 keeps buffer pointers in local structures for some metadata and reuses them, but such buffers may be forcibly discarded by nilfs_clear_dirty_page() in some critical situations. This issue is reported to appear after commit 28a65b49eb53 ("nilfs2: do not write dirty data after degenerating to read-only"), but the issue has potentially existed before. Fix this issue by checking the uptodate flag when attempting to reuse an internally held buffer, and reloading the metadata instead of reusing the buffer if the flag was lost.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/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，该漏洞源于重用已丢弃的缓冲区，可能导致内核警告或系统崩溃。
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 ~ 473795610594f261e98920f0945550314df36f07 -
Linux Linux 3.10 -

II. Public POCs for CVE-2023-54140

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III. Intelligence Information for CVE-2023-54140

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Other References for CVE-2023-54140 (6)

Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

CVE-2023-54076 9.8 CRITICAL smb: client: fix missed ses refcounting
CVE-2022-50717 9.8 CRITICAL nvmet-tcp: add bounds check on Transfer Tag
CVE-2025-68745 9.8 CRITICAL scsi: qla2xxx: Clear cmds after chip reset
CVE-2025-68741 9.8 CRITICAL scsi: qla2xxx: Fix improper freeing of purex item
CVE-2023-54090 9.8 CRITICAL ixgbe: Fix panic during XDP_TX with > 64 CPUs
CVE-2023-54094 9.8 CRITICAL net: prevent skb corruption on frag list segmentation
CVE-2023-53867 9.8 CRITICAL ceph: fix potential use-after-free bug when trimming caps
CVE-2025-68359 9.8 CRITICAL btrfs: fix double free of qgroup record after failure to add delayed ref head
CVE-2025-68726 9.8 CRITICAL crypto: aead - Fix reqsize handling
CVE-2023-53996 9.3 CRITICAL x86/sev: Make enc_dec_hypercall() accept a size instead of npages
CVE-2023-54071 8.8 HIGH wifi: rtw88: use work to update rate to avoid RCU warning
CVE-2023-54060 8.8 HIGH iommufd: Set end correctly when doing batch carry
CVE-2023-54043 8.8 HIGH iommufd: Do not add the same hwpt to the ioas->hwpt_list twice
CVE-2022-50732 8.8 HIGH staging: rtl8192u: Fix use after free in ieee80211_rx()
CVE-2025-68736 8.8 HIGH landlock: Fix handling of disconnected directories
CVE-2023-54040 8.8 HIGH ice: fix wrong fallback logic for FDIR
CVE-2023-54092 8.8 HIGH KVM: s390: pv: fix index value of replaced ASCE
CVE-2023-54120 8.8 HIGH Bluetooth: Fix race condition in hidp_session_thread
CVE-2023-53986 8.6 HIGH mips: bmips: BCM6358: disable RAC flush for TP1
CVE-2022-50746 8.4 HIGH erofs: validate the extent length for uncompressed pclusters

Showing top 20 of 322 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54140

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