CVE-2025-39962
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux Kernel
PublishedOct 9, 2025
First seenOct 9, 2025
How to fix
Update
- linux linux_kernel6.16.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.16 ≤ v < 6.16.9, 6.17 | 6.16.9 |
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