| 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-2021-47571: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| 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. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47571 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.2 with commit 66898177e7e5486dc77a4ba742efa4e2e9e900a4 and fixed in 4.4.294 with commit d43aecb694b10db9a4228ce2d38b5ae8de374443 |
| Issue introduced in 3.2 with commit 66898177e7e5486dc77a4ba742efa4e2e9e900a4 and fixed in 4.9.292 with commit 9186680382934b0e7529d3d70dcc0a21d087683b |
| Issue introduced in 3.2 with commit 66898177e7e5486dc77a4ba742efa4e2e9e900a4 and fixed in 4.14.257 with commit c0ef0e75a858cbd8618b473f22fbca36106dcf82 |
| Issue introduced in 3.2 with commit 66898177e7e5486dc77a4ba742efa4e2e9e900a4 and fixed in 4.19.219 with commit bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef |
| Issue introduced in 3.2 with commit 66898177e7e5486dc77a4ba742efa4e2e9e900a4 and fixed in 5.4.163 with commit 2e1ec01af2c7139c6a600bbfaea1a018b35094b6 |
| Issue introduced in 3.2 with commit 66898177e7e5486dc77a4ba742efa4e2e9e900a4 and fixed in 5.10.83 with commit 8d0163cec7de995f9eb9c3128c83fb84f0cb1c64 |
| Issue introduced in 3.2 with commit 66898177e7e5486dc77a4ba742efa4e2e9e900a4 and fixed in 5.15.6 with commit e27ee2f607fe6a9b923ef1fc65461c0613c97594 |
| Issue introduced in 3.2 with commit 66898177e7e5486dc77a4ba742efa4e2e9e900a4 and fixed in 5.16 with commit b535917c51acc97fb0761b1edec85f1f3d02bda4 |
| |
| 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-2021-47571 |
| 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/staging/rtl8192e/rtl8192e/rtl_core.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/d43aecb694b10db9a4228ce2d38b5ae8de374443 |
| https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683b |
| https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82 |
| https://git.kernel.org/stable/c/bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef |
| https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6 |
| https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64 |
| https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594 |
| https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4 |
