From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> mainline inclusion from mainline-v6.9-rc1 commit 19e35f24750ddf860c51e51c68cf07ea181b4881 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9QG8F CVE: CVE-2024-35915 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- Commit 7e8cdc97148c ("nfc: Add KCOV annotations") added kcov_remote_start_common()/kcov_remote_stop() pair into nci_rx_work(), with an assumption that kcov_remote_stop() is called upon continue of the for loop. But commit d24b03535e5e ("nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet") forgot to call kcov_remote_stop() before break of the for loop. Reported-by: syzbot <syzbot+0438378d6f157baae1a2@syzkaller.appspotmail.com> Closes: https://syzkaller.appspot.com/bug?extid=0438378d6f157baae1a2 Fixes: d24b03535e5e ("nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet") Suggested-by: Andrey Konovalov <andreyknvl@gmail.com> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/6d10f829-5a0c-405a-b39a-d7266f3a1a0b@I-love.SAKURA... Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Zheng Zucheng <zhengzucheng@huawei.com> --- net/nfc/nci/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c index f393aae80598..6216eab4868f 100644 --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -1509,6 +1509,7 @@ static void nci_rx_work(struct work_struct *work) if (!nci_plen(skb->data)) { kfree_skb(skb); + kcov_remote_stop(); break; } -- 2.34.1