| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2023-52509: ravb: Fix use-after-free issue in ravb_tx_timeout_work() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ravb: Fix use-after-free issue in ravb_tx_timeout_work() |
| |
| The ravb_stop() should call cancel_work_sync(). Otherwise, |
| ravb_tx_timeout_work() is possible to use the freed priv after |
| ravb_remove() was called like below: |
| |
| CPU0 CPU1 |
| ravb_tx_timeout() |
| ravb_remove() |
| unregister_netdev() |
| free_netdev(ndev) |
| // free priv |
| ravb_tx_timeout_work() |
| // use priv |
| |
| unregister_netdev() will call .ndo_stop() so that ravb_stop() is |
| called. And, after phy_stop() is called, netif_carrier_off() |
| is also called. So that .ndo_tx_timeout() will not be called |
| after phy_stop(). |
| |
| The Linux kernel CVE team has assigned CVE-2023-52509 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.2 with commit c156633f1353264634135dea86ffcae74f2122fc and fixed in 5.4.259 with commit 65d34cfd4e347054eb4193bc95d9da7eaa72dee5 |
| Issue introduced in 4.2 with commit c156633f1353264634135dea86ffcae74f2122fc and fixed in 5.10.199 with commit db9aafa19547833240f58c2998aed7baf414dc82 |
| Issue introduced in 4.2 with commit c156633f1353264634135dea86ffcae74f2122fc and fixed in 5.15.136 with commit 616761cf9df9af838c0a1a1232a69322a9eb67e6 |
| Issue introduced in 4.2 with commit c156633f1353264634135dea86ffcae74f2122fc and fixed in 6.1.59 with commit 6f6fa8061f756aedb93af12a8a5d3cf659127965 |
| Issue introduced in 4.2 with commit c156633f1353264634135dea86ffcae74f2122fc and fixed in 6.5.8 with commit 105abd68ad8f781985113aee2e92e0702b133705 |
| Issue introduced in 4.2 with commit c156633f1353264634135dea86ffcae74f2122fc and fixed in 6.6 with commit 3971442870713de527684398416970cf025b4f89 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2023-52509 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/ethernet/renesas/ravb_main.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/65d34cfd4e347054eb4193bc95d9da7eaa72dee5 |
| https://git.kernel.org/stable/c/db9aafa19547833240f58c2998aed7baf414dc82 |
| https://git.kernel.org/stable/c/616761cf9df9af838c0a1a1232a69322a9eb67e6 |
| https://git.kernel.org/stable/c/6f6fa8061f756aedb93af12a8a5d3cf659127965 |
| https://git.kernel.org/stable/c/105abd68ad8f781985113aee2e92e0702b133705 |
| https://git.kernel.org/stable/c/3971442870713de527684398416970cf025b4f89 |
