CVE-2025-71120 (GCVE-0-2025-71120)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:06 – Updated: 2026-05-23 16:03
VLAI
Title
SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf
Summary
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf A zero length gss_token results in pages == 0 and in_token->pages[0] is NULL. The code unconditionally evaluates page_address(in_token->pages[0]) for the initial memcpy, which can dereference NULL even when the copy length is 0. Guard the first memcpy so it only runs when length > 0.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5866efa8cbfbadf3905072798e96652faf02dbe8 , < a8f1e445ce3545c90d69c9e8ff8f7821825fe810 (git)
Affected: 5866efa8cbfbadf3905072798e96652faf02dbe8 , < 4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d (git)
Affected: 5866efa8cbfbadf3905072798e96652faf02dbe8 , < f9e53f69ac3bc4ef568b08d3542edac02e83fefd (git)
Affected: 5866efa8cbfbadf3905072798e96652faf02dbe8 , < 7452d53f293379e2c38cfa8ad0694aa46fc4788b (git)
Affected: 5866efa8cbfbadf3905072798e96652faf02dbe8 , < a2c6f25ab98b423f99ccd94874d655b8bcb01a19 (git)
Affected: 5866efa8cbfbadf3905072798e96652faf02dbe8 , < 1c8bb965e9b0559ff0f5690615a527c30f651dd8 (git)
Affected: 5866efa8cbfbadf3905072798e96652faf02dbe8 , < d4b69a6186b215d2dc1ebcab965ed88e8d41768d (git)
Affected: 66ed7b413d31c6ff23901ac4443b1cc1af2f6113 (git)
Affected: 7be8c165dc81564705e8e0b72d398ef708f67eaa (git)
Affected: 4.19.99 , < 4.20 (semver)
Affected: 5.4.15 , < 5.5 (semver)
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Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.