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7.5 High

CVE-2025-71120 In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauth_gss: avoid NULL deref on zero length…

Description

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.

Affected products and versions

Product Affected versions Fixed in
Linux 6.19 earliest → < 6.19 6.19
Linux 6.18 earliest → < 6.18.3 6.18.3
Linux 6.12 earliest → < 6.12.64 6.12.64
Linux 6.6 earliest → < 6.6.120 6.6.120
Linux 6.1 earliest → < 6.1.160 6.1.160
Linux 5.15 earliest → < 5.15.198 5.15.198
Linux 5.10 earliest → < 5.10.248 5.10.248
Linux 5.5 No fix stated
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.7 → latest No fix stated
Show the 2 other branches
Product Affected versions Fixed in
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 3.1.7 → latest No fix stated
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.7 → latest No fix stated

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