Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5866efa8cbfbadf3905072798e96652faf02dbe8 before a8f1e445ce3545c90d69c9e8ff8f7821825fe810; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 before 4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 before f9e53f69ac3bc4ef568b08d3542edac02e83fefd; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 before 7452d53f293379e2c38cfa8ad0694aa46fc4788b; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 before a2c6f25ab98b423f99ccd94874d655b8bcb01a19; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 before 1c8bb965e9b0559ff0f5690615a527c30f651dd8; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 before d4b69a6186b215d2dc1ebcab965ed88e8d41768d; affected 66ed7b413d31c6ff23901ac4443b1cc1af2f6113; affected 7be8c165dc81564705e8e0b72d398ef708f67eaa; affected 4.19.99 before 4.20; affected 5.4.15 before 5.5 |
| Linux / Linux | affected 5.5; unaffected 0 before 5.5; unaffected 5.10.248 through 5.10.*; unaffected 5.15.198 through 5.15.*; unaffected 6.1.160 through 6.1.*; unaffected 6.6.120 through 6.6.*; unaffected 6.12.64 through 6.12.*; unaffected 6.18.3 through 6.18.*; unaffected 6.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810
- https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d
- https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd
- https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b
- https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19
- https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8
- https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.