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Date: Mon, 6 Apr 2020 14:10:58 +0000 (UTC) From: Kalle Valo <kvalo@...eaurora.org> To: Chris Rorvick <chris@...vick.com> Cc: linux-wireless@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Chris Rorvick <chris@...vick.com>, Johannes Berg <johannes.berg@...el.com>, Emmanuel Grumbach <emmanuel.grumbach@...el.com>, Luca Coelho <luciano.coelho@...el.com>, Intel Linux Wireless <linuxwifi@...el.com>, "David S. Miller" <davem@...emloft.net> Subject: Re: [PATCH] iwlwifi: actually check allocated conf_tlv pointer Chris Rorvick <chris@...vick.com> wrote: > Commit 71bc0334a637 ("iwlwifi: check allocated pointer when allocating > conf_tlvs") attempted to fix a typoe introduced by commit 17b809c9b22e > ("iwlwifi: dbg: move debug data to a struct") but does not implement the > check correctly. > > This can happen in OOM situations and, when it does, we will potentially try to > dereference a NULL pointer. > > Tweeted-by: @grsecurity > Signed-off-by: Chris Rorvick <chris@...vick.com> Fails to build, please rebase on top of wireless-drivers. drivers/net/wireless/intel/iwlwifi/iwl-drv.c: In function 'iwl_req_fw_callback': drivers/net/wireless/intel/iwlwifi/iwl-drv.c:1470:16: error: 'struct iwl_fw' has no member named 'dbg_conf_tlv' if (!drv->fw.dbg_conf_tlv[i]) ^ make[5]: *** [drivers/net/wireless/intel/iwlwifi/iwl-drv.o] Error 1 make[5]: *** Waiting for unfinished jobs.... make[4]: *** [drivers/net/wireless/intel/iwlwifi] Error 2 make[3]: *** [drivers/net/wireless/intel] Error 2 make[2]: *** [drivers/net/wireless] Error 2 make[1]: *** [drivers/net] Error 2 make[1]: *** Waiting for unfinished jobs.... make: *** [drivers] Error 2 Patch set to Changes Requested. -- https://patchwork.kernel.org/patch/11470125/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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