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CVE-2025-39962— rxrpc: Fix untrusted unsigned subtract

EPSS 0.02% · P6
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I. Basic Information for CVE-2025-39962

Vulnerability Information
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Vulnerability Title
rxrpc: Fix untrusted unsigned subtract
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix untrusted unsigned subtract Fix the following Smatch static checker warning: net/rxrpc/rxgk_app.c:65 rxgk_yfs_decode_ticket() warn: untrusted unsigned subtract. 'ticket_len - 10 * 4' by prechecking the length of what we're trying to extract in two places in the token and decoding for a response packet. Also use sizeof() on the struct we're extracting rather specifying the size numerically to be consistent with the other related statements.
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，该漏洞源于未验证无符号减法操作，可能导致整数下溢。
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 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a ~ 71571e187106631a8127f2dde780f35caa358d33 -
LinuxLinux 6.16 -

II. Public POCs for CVE-2025-39962

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III. Intelligence Information for CVE-2025-39962

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Same Patch Batch · Linux · 2025-10-09 · 10 CVEs total

CVE-2025-39963io_uring: fix incorrect io_kiocb reference in io_link_skb
CVE-2025-39961iommu/amd/pgtbl: Fix possible race while increase page table level
CVE-2025-39960gpiolib: acpi: initialize acpi_gpio_info struct
CVE-2025-39959ASoC: amd: acp: Fix incorrect retrival of acp_chip_info
CVE-2025-39958iommu/s390: Make attach succeed when the device was surprise removed
CVE-2025-39957wifi: mac80211: increase scan_ies_len for S1G
CVE-2025-39955tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect().
CVE-2025-39956igc: don't fail igc_probe() on LED setup error
CVE-2025-39954clk: sunxi-ng: mp: Fix dual-divider clock rate readback

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39962

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