CVE-2025-21988— fs/netfs/read_collect: add to next->prev_donated
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I. Basic Information for CVE-2025-21988
Vulnerability Information
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Vulnerability Title
fs/netfs/read_collect: add to next->prev_donated
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fs/netfs/read_collect: add to next->prev_donated If multiple subrequests donate data to the same "next" request (depending on the subrequest completion order), each of them would overwrite the `prev_donated` field, causing data corruption and a BUG() crash ("Can't donate prior to front").
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netfs/read_collect组件存在数据损坏问题。
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-2025-21988
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-04-02 · 8 CVEs total
| CVE-2025-21994 | ksmbd: fix incorrect validation for num_aces field of smb_acl | |
| CVE-2025-21993 | iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic() | |
| CVE-2025-21992 | HID: ignore non-functional sensor in HP 5MP Camera | |
| CVE-2025-21991 | x86/microcode/AMD: Fix out-of-bounds on systems with CPU-less NUMA nodes | |
| CVE-2025-21990 | drm/amdgpu: NULL-check BO's backing store when determining GFX12 PTE flags | |
| CVE-2025-21989 | drm/amd/display: fix missing .is_two_pixels_per_container | |
| CVE-2025-21987 | drm/amdgpu: init return value in amdgpu_ttm_clear_buffer |
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-2025-21988
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