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.
Fix
Patch, vendor advisory and mitigation references on NVD 7
- https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8 Patch
- https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d Patch
- https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b Patch
- https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19 Patch
- https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810 Patch
- https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d Patch
- https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.5 · linuxNVD modified 2026-10-15 02:18
Affected (CPE criteria) 10
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.5:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
References 9
- https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8 Patch
- https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d Patch
- https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b Patch
- https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19 Patch
- https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810 Patch
- https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d Patch
- https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html