01 Record

CVE-2025-71120

SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf

HighPUBLISHEDCNA: Linux

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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02 Description

SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 44.4% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-01-14 15:06Z9 MO AGO

Last updated

2026-10-19 18:15Z9 DAYS AGO

Reserved

2026-01-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

8a458965b6d1d162d1ad5f3cd127d827b1db7225f25986e816c6ff795a96dec9

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux5866efa8cbfbadf3905072798e96652faf02dbe8 to < a8f1e445ce3545c90d69c9e8ff8f7821825fe810, 5866efa8cbfbadf3905072798e96652faf02dbe8 to < 4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d, 5866efa8cbfbadf3905072798e96652faf02dbe8 to < f9e53f69ac3bc4ef568b08d3542edac02e83fefd, 5866efa8cbfbadf3905072798e96652faf02dbe8 to < 7452d53f293379e2c38cfa8ad0694aa46fc4788b, 5866efa8cbfbadf3905072798e96652faf02dbe8 to < a2c6f25ab98b423f99ccd94874d655b8bcb01a19, 5866efa8cbfbadf3905072798e96652faf02dbe8 to < 1c8bb965e9b0559ff0f5690615a527c30f651dd8, 5866efa8cbfbadf3905072798e96652faf02dbe8 to < d4b69a6186b215d2dc1ebcab965ed88e8d41768d, 66ed7b413d31c6ff23901ac4443b1cc1af2f6113, 7be8c165dc81564705e8e0b72d398ef708f67eaa, 4.19.99 to < 4.20, 5.4.15 to < 5.5, 5.5—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810
git.kernel.orghttps://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d
git.kernel.orghttps://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd
git.kernel.orghttps://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b
git.kernel.orghttps://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19
git.kernel.orghttps://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8
git.kernel.orghttps://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-457936.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.162-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.69-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.18.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.