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CVE-2025-39888— fuse: Block access to folio overlimit

EPSS 0.02% · P6

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux3568a956932621cafadafc8b75fcf6dc06555105< 623719227b114d73a2cee45f1b343ced63ce09ecaffected
3568a956932621cafadafc8b75fcf6dc06555105< 9d81ba6d49a7457784f0b6a71046818b86ec7e44affected
6.16affected
< 6.16unaffected
6.16.8≤ 6.16.*unaffected
6.17≤ *unaffected
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I. Basic Information for CVE-2025-39888

Vulnerability Information
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Vulnerability Title
fuse: Block access to folio overlimit
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fuse: Block access to folio overlimit syz reported a slab-out-of-bounds Write in fuse_dev_do_write. When the number of bytes to be retrieved is truncated to the upper limit by fc->max_pages and there is an offset, the oob is triggered. Add a loop termination condition to prevent overruns.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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超过限制的folio访问，可能导致越界写入。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 3568a956932621cafadafc8b75fcf6dc06555105 ~ 623719227b114d73a2cee45f1b343ced63ce09ec -
LinuxLinux 6.16 -

II. Public POCs for CVE-2025-39888

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III. Intelligence Information for CVE-2025-39888

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Same Patch Batch · Linux · 2025-09-23 · 21 CVEs total

CVE-2025-39879ceph: always call ceph_shift_unused_folios_left()
CVE-2025-39887tracing/osnoise: Fix null-ptr-deref in bitmap_parselist()
CVE-2025-39885ocfs2: fix recursive semaphore deadlock in fiemap call
CVE-2025-39886bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()
CVE-2025-39883mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory
CVE-2025-39884btrfs: fix subvolume deletion lockup caused by inodes xarray race
CVE-2025-39882drm/mediatek: fix potential OF node use-after-free
CVE-2025-39880libceph: fix invalid accesses to ceph_connection_v1_info
CVE-2025-39881kernfs: Fix UAF in polling when open file is released
CVE-2025-39878ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error
CVE-2025-39868erofs: fix runtime warning on truncate_folio_batch_exceptionals()
CVE-2025-39877mm/damon/sysfs: fix use-after-free in state_show()
CVE-2025-39876net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()
CVE-2025-39874macsec: sync features on RTM_NEWLINK
CVE-2025-39875igb: Fix NULL pointer dereference in ethtool loopback test
CVE-2025-39873can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB
CVE-2025-39872hsr: hold rcu and dev lock for hsr_get_port_ndev
CVE-2025-39871dmaengine: idxd: Remove improper idxd_free
CVE-2025-39869dmaengine: ti: edma: Fix memory allocation size for queue_priority_map
CVE-2025-39870dmaengine: idxd: Fix double free in idxd_setup_wqs()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39888

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