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[PATCH] knfsd: svcrpc: fix gss krb5i memory leak

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The memory leak here is embarassingly obvious.

This fixes a problem that causes the kernel to leak a small amount of memory
every time it receives a integrity-protected request.

Thanks to Aim Le Rouzic for the bug report.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
J.Bruce Fields 2006-12-13 00:35:19 -08:00 committed by Linus Torvalds
parent 451c11a161
commit b797b5beac
1 changed files with 5 additions and 4 deletions
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9
net/sunrpc/auth_gss/svcauth_gss.c
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@ -804,19 +804,19 @@ unwrap_integ_data(struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
integ_len = svc_getnl(&buf->head[0]);
if (integ_len & 3)
goto out;
return stat;
if (integ_len > buf->len)
goto out;
return stat;
if (xdr_buf_subsegment(buf, &integ_buf, 0, integ_len))
BUG();
/* copy out mic... */
if (read_u32_from_xdr_buf(buf, integ_len, &mic.len))
BUG();
if (mic.len > RPC_MAX_AUTH_SIZE)
goto out;
return stat;
mic.data = kmalloc(mic.len, GFP_KERNEL);
if (!mic.data)
goto out;
return stat;
if (read_bytes_from_xdr_buf(buf, integ_len + 4, mic.data, mic.len))
goto out;
maj_stat = gss_verify_mic(ctx, &integ_buf, &mic);
@ -826,6 +826,7 @@ unwrap_integ_data(struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
goto out;
stat = 0;
out:
kfree(mic.data);
return stat;
}