CVE-2025-68761— hfs: fix potential use after free in hfs_correct_next_unused_CNID()
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I. Basic Information for CVE-2025-68761
Vulnerability Information
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Vulnerability Title
hfs: fix potential use after free in hfs_correct_next_unused_CNID()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: hfs: fix potential use after free in hfs_correct_next_unused_CNID() This code calls hfs_bnode_put(node) which drops the refcount and then dreferences "node" on the next line. It's only safe to use "node" when we're holding a reference so flip these two lines around.
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hfs文件系统中hfs_correct_next_unused_CNID函数调用hfs_bnode_put后仍引用节点，可能导致释放后重用。
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
II. Public POCs for CVE-2025-68761
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Same Patch Batch · Linux · 2026-01-05 · 16 CVEs total
| CVE-2025-68752 | iavf: Implement settime64 with -EOPNOTSUPP | |
| CVE-2025-68751 | s390/fpu: Fix false-positive kmsan report in fpu_vstl() | |
| CVE-2025-68753 | ALSA: firewire-motu: add bounds check in put_user loop for DSP events | |
| CVE-2025-68754 | rtc: amlogic-a4: fix double free caused by devm | |
| CVE-2025-68755 | staging: most: remove broken i2c driver | |
| CVE-2025-68756 | block: Use RCU in blk_mq_[un]quiesce_tagset() instead of set->tag_list_lock | |
| CVE-2025-68757 | drm/vgem-fence: Fix potential deadlock on release | |
| CVE-2025-68758 | backlight: led-bl: Add devlink to supplier LEDs | |
| CVE-2025-68759 | wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring() | |
| CVE-2025-68760 | iommu/amd: Fix potential out-of-bounds read in iommu_mmio_show | |
| CVE-2025-68762 | net: netpoll: initialize work queue before error checks | |
| CVE-2025-68763 | crypto: starfive - Correctly handle return of sg_nents_for_len | |
| CVE-2025-68765 | mt76: mt7615: Fix memory leak in mt7615_mcu_wtbl_sta_add() | |
| CVE-2025-68764 | NFS: Automounted filesystems should inherit ro,noexec,nodev,sync flags | |
| CVE-2025-68766 | irqchip/mchp-eic: Fix error code in mchp_eic_domain_alloc() |
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2025-68761
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