From: <gregkh@linuxfoundation.org>
To: dan.carpenter@oracle.com, gregkh@linuxfoundation.org,
stable@vger.kernel.org
Subject: patch "staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()" added to staging-linus
Date: Wed, 17 Nov 2021 14:09:05 +0100 [thread overview]
Message-ID: <1637154545174104@kroah.com> (raw)
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);
--
2.34.0
reply other threads:[~2021-11-17 13:09 UTC|newest]
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