CVE-2025-39962
published 2025-10-09CVE-2025-39962: In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix untrusted unsigned subtract Fix the following Smatch static checker warning…
PriorityP337high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.23%
13.9th percentile
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
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.16.9-1 (forky) | linux 6.16.9-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < 71571e187106631a8127f2dde780f35caa358d33 | 71571e187106631a8127f2dde780f35caa358d33 |
| linux | linux | >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < 2429a197648178cd4dc930a9d87c13c547460564 | 2429a197648178cd4dc930a9d87c13c547460564 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.16.9-1 | 6.16.9-1 |
| linux | linux_kernel | >= 6.16 < 6.16.9 | 6.16.9 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8LOW
vendor_redhat7.8HIGH
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Red Hat
kernel: rxrpc: Fix untrusted unsigned subtract
vendor_redhat·2025-10-09·CVSS 7.8
CVE-2025-39962 [HIGH] kernel: rxrpc: Fix untrusted unsigned subtract
kernel: rxrpc: Fix untrusted unsigned subtract
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.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux
Debian
CVE-2025-39962: linux - In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix ...
vendor_debian·2025·CVSS 7.8
CVE-2025-39962 [HIGH] CVE-2025-39962: linux - In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix ...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved (fixed in 6.16.9-1)
sid: resolved (fixed in 6.16.9-1)
trixie: resolved
OSV
CVE-2025-39962: In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix untrusted unsigned subtract Fix the following Smatch static checker war
osv·2025-10-09·CVSS 7.8
CVE-2025-39962 [HIGH] CVE-2025-39962: In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix untrusted unsigned subtract Fix the following Smatch static checker war
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.
GHSA
GHSA-mhrx-xqmx-r77g: In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix untrusted unsigned subtract
Fix the following Smatch static checker w
ghsa_unreviewed·2025-10-09
CVE-2025-39962 [HIGH] CWE-787 GHSA-mhrx-xqmx-r77g: In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix untrusted unsigned subtract
Fix the following Smatch static checker w
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.
No detection rules found.
No public exploits indexed.
2025-10-09
Published