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CVE-2026-89832— f2fs: fix to clear dirty flag on folio in error path

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.

在 Linux 内核中，以下漏洞已得到修复： f2fs：修复在错误路径下清除 folio 脏标记的问题 当节点块因校验和（chksum）不匹配或页脚信息不一致而损坏时，需要清除该节点 folio 的脏标记（dirty flag），以便将不一致的节点数据持久化到存储设备。

CVSS 7.8 · High EPSS 0.18% · P6

Possible ATT&CK Techniques 1 AI

T1486 · Data Encrypted for Impact

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux b42b179bda9ff11075a6fc2bac4d9e400513679a< 34732e3a8713f3b7acd1a0ea37e3a6bee4c78550 affected
b42b179bda9ff11075a6fc2bac4d9e400513679a< ab35ae07f2b5b4e118ea47b88577fc7d0e797b17 affected
b42b179bda9ff11075a6fc2bac4d9e400513679a< 3923ec2b98c96dda4a8bfab81d22553dbf0dd6c2 affected
b42b179bda9ff11075a6fc2bac4d9e400513679a< 5b86eab84ac8e9289b5afc52ef88ab18ba5bacab affected
8d7ebdd109b4654ec5e0e9c3c6f08b06d6558f10 affected
b039536485970829918aa237a08417bd0ed5437c affected
4.19.51< 4.20 affected
5.1.10< 5.2 affected
… +6 more rows
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I. Basic Information for CVE-2026-89832

Vulnerability Information
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Vulnerability Title
f2fs: fix to clear dirty flag on folio in error path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to clear dirty flag on folio in error path If node block is corrupted due to chksum mismatch or inconsistent footer info, it needs to drop clear flag of node folio, in order to persist inconsistent node data to storage.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux b42b179bda9ff11075a6fc2bac4d9e400513679a ~ 34732e3a8713f3b7acd1a0ea37e3a6bee4c78550 -
Linux Linux 5.2 -

II. Public POCs for CVE-2026-89832

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III. Intelligence Information for CVE-2026-89832

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Patches & Fixes for CVE-2026-89832 (1)

Other References for CVE-2026-89832 (3)

Same Patch Batch · Linux · 2026-09-16 · 276 CVEs total

CVE-2026-90048 9.8 CRITICAL fs/ntfs3: fix slab-out-of-bounds write in ni_create_attr_list()
CVE-2026-90012 9.8 CRITICAL spi: Fix DMA mapping ownership on partial map failure
CVE-2026-89970 9.8 CRITICAL nvmet-auth: Synchronize timeout work during SQ teardown
CVE-2026-89857 9.8 CRITICAL scsi: qla2xxx: Hold qpair lock when sending NVMe LS reject
CVE-2026-89969 9.8 CRITICAL nvmet-tcp: fix out-of-bounds write when receiving an over-long PDU
CVE-2026-89847 9.8 CRITICAL scsi: qla2xxx: Avoid double completion in async IOCB timeout
CVE-2026-89972 9.8 CRITICAL nvme: add missing SRCU grace period in error path
CVE-2026-89990 9.8 CRITICAL ceph: lock mutex in ceph_mds_check_access()
CVE-2026-90036 9.8 CRITICAL NFSD: Prevent client use-after-free during blocked-lock reaping
CVE-2026-90038 9.8 CRITICAL NFSD: Prevent client use-after-free during export state revocation
CVE-2026-90037 9.8 CRITICAL NFSD: Prevent client use-after-free during close_lru reaping
CVE-2026-89788 9.8 CRITICAL ksmbd: fix tree connection use-after-free in smb2_tree_connect()
CVE-2026-89783 9.8 CRITICAL xfrm6: fix out-of-bounds write in xfrm6_input_addr() when secpath is full
CVE-2026-90042 9.8 CRITICAL ceph: properly decrypt filenames in vmalloc() buffers
CVE-2026-89778 9.8 CRITICAL isofs: fix out-of-bounds page array access on empty zisofs block
CVE-2026-89915 9.3 CRITICAL KVM: arm64: Remove VM-wide VNCR mapping counter
CVE-2026-90049 9.3 CRITICAL net: skbuff: don't skb_tx_error() the source skb in skb_zerocopy()
CVE-2026-89775 9.3 CRITICAL KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation
CVE-2026-89916 9.3 CRITICAL KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry
CVE-2026-89930 9.3 CRITICAL KVM: nVMX: Service local TLB flushes on failed nested VM-Enter

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-89832

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