| 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-2022-49676: memory: samsung: exynos5422-dmc: Fix refcount leak in of_get_dram_timings |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| memory: samsung: exynos5422-dmc: Fix refcount leak in of_get_dram_timings |
| |
| of_parse_phandle() returns a node pointer with refcount |
| incremented, we should use of_node_put() on it when not need anymore. |
| This function doesn't call of_node_put() in some error paths. |
| To unify the structure, Add put_node label and goto it on errors. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49676 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.5 with commit 6e7674c3c6df565ab47d02b4f2e608e3477cdf86 and fixed in 5.10.127 with commit 889aad2203e09eed2071ca8985c25e9d6aea5735 |
| Issue introduced in 5.5 with commit 6e7674c3c6df565ab47d02b4f2e608e3477cdf86 and fixed in 5.15.51 with commit cde4480b5ab06195b9164184b0c02ced71e601b4 |
| Issue introduced in 5.5 with commit 6e7674c3c6df565ab47d02b4f2e608e3477cdf86 and fixed in 5.18.8 with commit bb2a481778c60f912c363e271ae46b55ff8132db |
| Issue introduced in 5.5 with commit 6e7674c3c6df565ab47d02b4f2e608e3477cdf86 and fixed in 5.19 with commit 1332661e09304b7b8e84e5edc11811ba08d12abe |
| |
| 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-2022-49676 |
| 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/memory/samsung/exynos5422-dmc.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/889aad2203e09eed2071ca8985c25e9d6aea5735 |
| https://git.kernel.org/stable/c/cde4480b5ab06195b9164184b0c02ced71e601b4 |
| https://git.kernel.org/stable/c/bb2a481778c60f912c363e271ae46b55ff8132db |
| https://git.kernel.org/stable/c/1332661e09304b7b8e84e5edc11811ba08d12abe |
