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CVE-2025-39822— io_uring/kbuf: fix signedness in this_len calculation

EPSS 0.02% · P6
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I. Basic Information for CVE-2025-39822

Vulnerability Information
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Vulnerability Title
io_uring/kbuf: fix signedness in this_len calculation
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: fix signedness in this_len calculation When importing and using buffers, buf->len is considered unsigned. However, buf->len is converted to signed int when committing. This can lead to unexpected behavior if the buffer is large enough to be interpreted as a negative value. Make min_t calculation unsigned.
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，该漏洞源于缓冲区长度计算中存在符号问题，可能导致意外行为。
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 cf9536e550dd243a1681fdbf804221527da20a80 ~ f4f411c068402c370c4f9a9d4950a97af97bbbb1 -
LinuxLinux 6.15 -

II. Public POCs for CVE-2025-39822

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III. Intelligence Information for CVE-2025-39822

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Same Patch Batch · Linux · 2025-09-16 · 115 CVEs total

CVE-2022-50340media: vimc: Fix wrong function called when vimc_init() fails
CVE-2023-53307rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails
CVE-2023-53305Bluetooth: L2CAP: Fix use-after-free
CVE-2023-53304netfilter: nft_set_rbtree: fix overlap expiration walk
CVE-2022-50351cifs: Fix xid leak in cifs_create()
CVE-2022-50352net: hns: fix possible memory leak in hnae_ae_register()
CVE-2022-50350scsi: target: iscsi: Fix a race condition between login_work and the login thread
CVE-2022-50348nfsd: Fix a memory leak in an error handling path
CVE-2022-50349misc: tifm: fix possible memory leak in tifm_7xx1_switch_media()
CVE-2022-50347mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host()
CVE-2022-50346ext4: init quota for 'old.inode' in 'ext4_rename'
CVE-2022-50343rapidio: fix possible name leaks when rio_add_device() fails
CVE-2022-50344ext4: fix null-ptr-deref in ext4_write_info
CVE-2022-50342floppy: Fix memory leak in do_floppy_init()
CVE-2022-50341cifs: fix oops during encryption
CVE-2025-39827net: rose: include node references in rose_neigh refcount
CVE-2025-39830net/mlx5: HWS, Fix memory leak in hws_pool_buddy_init error path
CVE-2025-39829trace/fgraph: Fix the warning caused by missing unregister notifier
CVE-2025-39828atm: atmtcp: Prevent arbitrary write in atmtcp_recv_control().
CVE-2025-39831fbnic: Move phylink resume out of service_task and into open/close

Showing top 20 of 115 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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