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CVE-2025-39962

rxrpc: Fix untrusted unsigned subtract PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a before 71571e187106631a8127f2dde780f35caa358d33; affected 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a before 2429a197648178cd4dc930a9d87c13c547460564
Linux / Linuxaffected 6.16; unaffected 0 before 6.16; unaffected 6.16.9 through 6.16.*; unaffected 6.17 through *

CWE

No CWE identifiers supplied.

References