CVE-2026-89833: Linux kernel · f2fs: fix to avoid potential deadloop in f2fs_fsync_node_pages()
Source GCVE Database
Not known to be exploited · fixed in ce366bfa821ec81dd45bde547ee31e659306cc61 : update Linux kernel when convenient.
Data as of 30 Oct 2026, 19:32 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in ce366bfa821ec81dd45bde547ee31e659306cc61, bdc06381d590ad5833ee7a2c56b8b685d80ee9b5, 905411f6504876d268ba8dafc8e75367782da4b7 +3
Exploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix has been implemented in the Linux kernel to resolve this deadloop issue. Users and administrators should update to the fixed kernel version once it is released.
Description
A potential deadloop (infinite loop) vulnerability was identified and fixed in the Linux kernel's f2fs filesystem code within the f2fs_fsync_node_pages() function. The issue arises from a race condition involving concurrent file synchronization and truncation operations, which can cause the kernel thread to retry indefinitely.
References
- nvd.nist.gov/vuln/detail/CVE-2026-89833 (opens in a new tab)
- git.kernel.org/stable/c/161513f53e4ac90fd356433bdf8e31e6adeb92af (opens in a new tab)
- git.kernel.org/stable/c/58ca9f06480457eb9c9513e1ae2b75316d4ed1e5 (opens in a new tab)
- git.kernel.org/stable/c/64a47dc8286ff98d8c231ae035bdfe16be1b93bf (opens in a new tab)
- git.kernel.org/stable/c/905411f6504876d268ba8dafc8e75367782da4b7 (opens in a new tab)
- git.kernel.org/stable/c/bdc06381d590ad5833ee7a2c56b8b685d80ee9b5 (opens in a new tab)
- git.kernel.org/stable/c/ce366bfa821ec81dd45bde547ee31e659306cc61 (opens in a new tab)