diff options
| author | Zhipeng Lu <alexious@zju.edu.cn> | 2023-12-24 16:20:33 +0800 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2024-03-01 09:12:04 -0500 |
| commit | e67b652d8e8591d3b1e569dbcdfcee15993e91fa (patch) | |
| tree | 38f990ddff959c9f03f208d86e774eb3bea3ad8a /net/sunrpc/auth_gss | |
| parent | d206a76d7d2726f3b096037f2079ce0bd3ba329b (diff) | |
SUNRPC: fix a memleak in gss_import_v2_context
The ctx->mech_used.data allocated by kmemdup is not freed in neither
gss_import_v2_context nor it only caller gss_krb5_import_sec_context,
which frees ctx on error.
Thus, this patch reform the last call of gss_import_v2_context to the
gss_krb5_import_ctx_v2, preventing the memleak while keepping the return
formation.
Fixes: 47d848077629 ("gss_krb5: handle new context format from gssd")
Signed-off-by: Zhipeng Lu <alexious@zju.edu.cn>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/auth_gss')
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_mech.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c index 64cff717c3d9..3366505bc669 100644 --- a/net/sunrpc/auth_gss/gss_krb5_mech.c +++ b/net/sunrpc/auth_gss/gss_krb5_mech.c @@ -398,6 +398,7 @@ gss_import_v2_context(const void *p, const void *end, struct krb5_ctx *ctx, u64 seq_send64; int keylen; u32 time32; + int ret; p = simple_get_bytes(p, end, &ctx->flags, sizeof(ctx->flags)); if (IS_ERR(p)) @@ -450,8 +451,16 @@ gss_import_v2_context(const void *p, const void *end, struct krb5_ctx *ctx, } ctx->mech_used.len = gss_kerberos_mech.gm_oid.len; - return gss_krb5_import_ctx_v2(ctx, gfp_mask); + ret = gss_krb5_import_ctx_v2(ctx, gfp_mask); + if (ret) { + p = ERR_PTR(ret); + goto out_free; + } + return 0; + +out_free: + kfree(ctx->mech_used.data); out_err: return PTR_ERR(p); } |