| 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-2022-49421: video: fbdev: clcdfb: Fix refcount leak in clcdfb_of_vram_setup |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| video: fbdev: clcdfb: Fix refcount leak in clcdfb_of_vram_setup |
| |
| of_parse_phandle() returns a node pointer with refcount incremented, we should |
| use of_node_put() on it when not need anymore. Add missing of_node_put() to |
| avoid refcount leak. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49421 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 4.9.318 with commit 6c92711db7c90f78e0b67ac2a8944d0fe7e12d83 |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 4.14.283 with commit 2e2e2c71b2642289438392edbf5d08cdbc0b138b |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 4.19.247 with commit 51eb1bb6baeb478538dd4ec6459fd68c44a855b1 |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 5.4.198 with commit 8db59df7f5826e104db82cfddbf22a33a151193e |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 5.10.121 with commit c1c4405222b6fc98c16e8c2aa679c14e41d81465 |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 5.15.46 with commit f2dfb4ab887d67be7d0892ba041d3c8d738d3356 |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 5.17.14 with commit bbb2a24e863b6a10129546a0a4ceea2f07deec39 |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 5.18.3 with commit 38d245cebf545338a6bc1c7762023de3fbecd7b7 |
| Issue introduced in 3.17 with commit d10715be03bd8bad59ddc50236cb140c3bd73c7b and fixed in 5.19 with commit b23789a59fa6f00e98a319291819f91fbba0deb8 |
| |
| 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-2022-49421 |
| 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/video/fbdev/amba-clcd.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/6c92711db7c90f78e0b67ac2a8944d0fe7e12d83 |
| https://git.kernel.org/stable/c/2e2e2c71b2642289438392edbf5d08cdbc0b138b |
| https://git.kernel.org/stable/c/51eb1bb6baeb478538dd4ec6459fd68c44a855b1 |
| https://git.kernel.org/stable/c/8db59df7f5826e104db82cfddbf22a33a151193e |
| https://git.kernel.org/stable/c/c1c4405222b6fc98c16e8c2aa679c14e41d81465 |
| https://git.kernel.org/stable/c/f2dfb4ab887d67be7d0892ba041d3c8d738d3356 |
| https://git.kernel.org/stable/c/bbb2a24e863b6a10129546a0a4ceea2f07deec39 |
| https://git.kernel.org/stable/c/38d245cebf545338a6bc1c7762023de3fbecd7b7 |
| https://git.kernel.org/stable/c/b23789a59fa6f00e98a319291819f91fbba0deb8 |
