FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-22 09:22:37 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

crypto: sha1-mb - use corrcet pointer while completing jobs

Browse Source 
In sha_complete_job, incorrect mcryptd_hash_request_ctx pointer is used
when check and complete other jobs. If the memory of first completed req
is freed, while still completing other jobs in the func, kernel will
crash since NULL pointer is assigned to RIP.

Cc: <stable@vger.kernel.org>
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Xiaodong Liu 2016-04-12 09:45:51 +00:00 committed by Herbert Xu
parent 6f0904ada4
commit 0851561d9c
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/crypto/sha-mb/sha1_mb.c
View File

@ -453,10 +453,10 @@ static int sha_complete_job(struct mcryptd_hash_request_ctx *rctx,
req = cast_mcryptd_ctx_to_req(req_ctx);
if (irqs_disabled())
rctx->complete(&req->base, ret);
req_ctx->complete(&req->base, ret);
else {
local_bh_disable();
rctx->complete(&req->base, ret);
req_ctx->complete(&req->base, ret);
local_bh_enable();
}
}