This is a note to let you know that I've just added the patch titled
staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-linus branch.
The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.
If you have any questions about this process, please let me know.
From b535917c51acc97fb0761b1edec85f1f3d02bda4 Mon Sep 17 00:00:00 2001
From: Dan Carpenter dan.carpenter@oracle.com Date: Wed, 17 Nov 2021 10:20:16 +0300 Subject: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
The free_rtllib() function frees the "dev" pointer so there is use after free on the next line. Re-arrange things to avoid that.
Fixes: 66898177e7e5 ("staging: rtl8192e: Fix unload/reload problem") Cc: stable stable@vger.kernel.org Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Link: https://lore.kernel.org/r/20211117072016.GA5237@kili Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/staging/rtl8192e/rtl8192e/rtl_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c index d2e9df60e9ba..b9ce71848023 100644 --- a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c +++ b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c @@ -2549,13 +2549,14 @@ static void _rtl92e_pci_disconnect(struct pci_dev *pdev) free_irq(dev->irq, dev); priv->irq = 0; } - free_rtllib(dev);
if (dev->mem_start != 0) { iounmap((void __iomem *)dev->mem_start); release_mem_region(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1)); } + + free_rtllib(dev); }
pci_disable_device(pdev);