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CVE-2025-39800— btrfs: abort transaction on unexpected eb generation at btrfs_copy_root()

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，该漏洞源于未正确处理意外生成的扩展缓冲区，可能导致元数据损坏。

CVSS 7.8 · High EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux be20aa9dbadc8c06283784ee12bbc0d97dea3418< 4290e34fb87ae556b12c216efd0ae91583446b7a affected
be20aa9dbadc8c06283784ee12bbc0d97dea3418< 4734255ef39b416864139dcda96a387fe5f33a6a affected
be20aa9dbadc8c06283784ee12bbc0d97dea3418< da2124719f386b6e5d4d4b1a2e67c440e4d5892f affected
be20aa9dbadc8c06283784ee12bbc0d97dea3418< f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3 affected
be20aa9dbadc8c06283784ee12bbc0d97dea3418< 33e8f24b52d2796b8cfb28c19a1a7dd6476323a8 affected
2.6.29 affected
< 2.6.29 unaffected
6.1.149≤ 6.1.* unaffected
… +4 more rows
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I. Basic Information for CVE-2025-39800

Vulnerability Information
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Vulnerability Title
btrfs: abort transaction on unexpected eb generation at btrfs_copy_root()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: abort transaction on unexpected eb generation at btrfs_copy_root() If we find an unexpected generation for the extent buffer we are cloning at btrfs_copy_root(), we just WARN_ON() and don't error out and abort the transaction, meaning we allow to persist metadata with an unexpected generation. Instead of warning only, abort the transaction and return -EUCLEAN.
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，该漏洞源于未正确处理意外生成的扩展缓冲区，可能导致元数据损坏。
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 be20aa9dbadc8c06283784ee12bbc0d97dea3418 ~ 4290e34fb87ae556b12c216efd0ae91583446b7a -
Linux Linux 2.6.29 -

II. Public POCs for CVE-2025-39800

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III. Intelligence Information for CVE-2025-39800

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Patches & Fixes for CVE-2025-39800 (1)

Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50235 9.8 CRITICAL NFSD: Protect against send buffer overflow in NFSv2 READDIR
CVE-2022-50335 9.8 CRITICAL 9p: set req refcount to zero to avoid uninitialized usage
CVE-2023-53192 9.8 CRITICAL vxlan: Fix nexthop hash size
CVE-2023-53253 8.8 HIGH HID: nvidia-shield: Reference hid_device devm allocation of input_dev name
CVE-2023-53226 8.8 HIGH wifi: mwifiex: Fix OOB and integer underflow when rx packets
CVE-2022-50241 8.8 HIGH NFSD: fix use-after-free on source server when doing inter-server copy
CVE-2023-53194 8.4 HIGH fs/ntfs3: Add length check in indx_get_root
CVE-2023-53213 8.1 HIGH wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
CVE-2023-53186 8.1 HIGH skbuff: Fix a race between coalescing and releasing SKBs
CVE-2022-50303 7.8 HIGH drm/amdkfd: Fix double release compute pasid
CVE-2023-53254 7.8 HIGH cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-53170 7.8 HIGH net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
CVE-2023-53252 7.8 HIGH Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-53176 7.8 HIGH serial: 8250: Reinit port->pm on port specific driver unbind
CVE-2023-53178 7.8 HIGH mm: fix zswap writeback race condition
CVE-2023-53179 7.8 HIGH netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
CVE-2023-53184 7.8 HIGH arm64/sme: Set new vector length before reallocating
CVE-2022-50315 7.8 HIGH ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
CVE-2023-53222 7.8 HIGH jfs: jfs_dmap: Validate db_l2nbperpage while mounting
CVE-2022-50286 7.8 HIGH ext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39800

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