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CVE-2025-68788— fsnotify: do not generate ACCESS/MODIFY events on child for special files

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fsnotify对特殊文件生成ACCESS/MODIFY子事件，可能导致信息泄露。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.18% · P8

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 72acc854427948efed7a83da27f7dc3239ac9afc< df2711544b050aba703e6da418c53c7dc5d443ca affected
72acc854427948efed7a83da27f7dc3239ac9afc< 859bdf438f01d9aa7f84b09c1202d548c7cad9e8 affected
72acc854427948efed7a83da27f7dc3239ac9afc< 6a7d7d96eeeab7af2bd01afbb3d9878a11a13d91 affected
72acc854427948efed7a83da27f7dc3239ac9afc< e0643d46759db8b84c0504a676043e5e341b6c81 affected
72acc854427948efed7a83da27f7dc3239ac9afc< 82f7416bcbd951549e758d15fc1a96a5afc2e900 affected
72acc854427948efed7a83da27f7dc3239ac9afc< 7a93edb23bcf07a3aaf8b598edfc2faa8fbcc0b6 affected
72acc854427948efed7a83da27f7dc3239ac9afc< 635bc4def026a24e071436f4f356ea08c0eed6ff affected
2.6.36 affected
… +8 more rows
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I. Basic Information for CVE-2025-68788

Vulnerability Information
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Vulnerability Title
fsnotify: do not generate ACCESS/MODIFY events on child for special files
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fsnotify: do not generate ACCESS/MODIFY events on child for special files inotify/fanotify do not allow users with no read access to a file to subscribe to events (e.g. IN_ACCESS/IN_MODIFY), but they do allow the same user to subscribe for watching events on children when the user has access to the parent directory (e.g. /dev). Users with no read access to a file but with read access to its parent directory can still stat the file and see if it was accessed/modified via atime/mtime change. The same is not true for special files (e.g. /dev/null). Users will not generally observe atime/mtime changes when other users read/write to special files, only when someone sets atime/mtime via utimensat(). Align fsnotify events with this stat behavior and do not generate ACCESS/MODIFY events to parent watchers on read/write of special files. The events are still generated to parent watchers on utimensat(). This closes some side-channels that could be possibly used for information exfiltration [1]. [1] https://snee.la/pdf/pubs/file-notification-attacks.pdf
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fsnotify对特殊文件生成ACCESS/MODIFY子事件，可能导致信息泄露。
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 72acc854427948efed7a83da27f7dc3239ac9afc ~ df2711544b050aba703e6da418c53c7dc5d443ca -
Linux Linux 2.6.36 -

II. Public POCs for CVE-2025-68788

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III. Intelligence Information for CVE-2025-68788

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Same Patch Batch · Linux · 2026-01-13 · 93 CVEs total

CVE-2025-68811 9.8 CRITICAL svcrdma: use rc_pageoff for memcpy byte offset
CVE-2025-68794 9.8 CRITICAL iomap: adjust read range correctly for non-block-aligned positions
CVE-2025-68817 9.8 CRITICAL ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
CVE-2025-68775 9.8 CRITICAL net/handshake: duplicate handshake cancellations leak socket
CVE-2025-71068 9.8 CRITICAL svcrdma: bound check rq_pages index in inline path
CVE-2025-71095 9.1 CRITICAL net: stmmac: fix the crash issue for zero copy XDP_TX action
CVE-2025-68809 9.1 CRITICAL ksmbd: vfs: fix race on m_flags in vfs_cache
CVE-2025-71093 9.1 CRITICAL e1000: fix OOB in e1000_tbi_should_accept()
CVE-2025-68818 8.8 HIGH scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path"
CVE-2025-71072 8.2 HIGH shmem: fix recovery on rename failures
CVE-2025-68799 8.1 HIGH caif: fix integer underflow in cffrml_receive()
CVE-2025-68803 8.0 HIGH NFSD: NFSv4 file creation neglects setting ACL
CVE-2025-68795 7.8 HIGH ethtool: Avoid overflowing userspace buffer on stats query
CVE-2025-68793 7.8 HIGH drm/amdgpu: fix a job->pasid access race in gpu recovery
CVE-2025-68792 7.8 HIGH tpm2-sessions: Fix out of range indexing in name_size
CVE-2025-68801 7.8 HIGH mlxsw: spectrum_router: Fix neighbour use-after-free
CVE-2025-71078 7.8 HIGH powerpc/64s/slb: Fix SLB multihit issue during SLB preload
CVE-2025-68805 7.8 HIGH fuse: fix io-uring list corruption for terminated non-committed requests
CVE-2025-68808 7.8 HIGH media: vidtv: initialize local pointers upon transfer of memory ownership
CVE-2025-68810 7.8 HIGH KVM: Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot

Showing top 20 of 93 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68788

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