| 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-2022-49680: ARM: exynos: Fix refcount leak in exynos_map_pmu |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ARM: exynos: Fix refcount leak in exynos_map_pmu |
| |
| of_find_matching_node() 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. |
| of_node_put() checks null pointer. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49680 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.17 with commit fce9e5bb25264153f9f002eada41757118d25ba9 and fixed in 4.9.321 with commit 545ae5cbae839ce39bfe09828e413f1c916082de |
| Issue introduced in 3.17 with commit fce9e5bb25264153f9f002eada41757118d25ba9 and fixed in 4.14.286 with commit 31d09571bb071c20f6bdc0bb7ac1ef8dd2987c04 |
| Issue introduced in 3.17 with commit fce9e5bb25264153f9f002eada41757118d25ba9 and fixed in 4.19.250 with commit 7571bcecf01b69f0d3ec60ca41ce5d4c75411a4a |
| Issue introduced in 3.17 with commit fce9e5bb25264153f9f002eada41757118d25ba9 and fixed in 5.4.202 with commit f9b77a52937582a5b99a5a07e4ef1e2f48f87347 |
| Issue introduced in 3.17 with commit fce9e5bb25264153f9f002eada41757118d25ba9 and fixed in 5.10.127 with commit 68f28d52e6cbab8dcfa249cac4356d1d0573e868 |
| Issue introduced in 3.17 with commit fce9e5bb25264153f9f002eada41757118d25ba9 and fixed in 5.15.51 with commit d23f76018e17618559da9eea179d137362023f95 |
| Issue introduced in 3.17 with commit fce9e5bb25264153f9f002eada41757118d25ba9 and fixed in 5.18.8 with commit fc354856e9fad9cd36e2ad28f9da70716025055a |
| Issue introduced in 3.17 with commit fce9e5bb25264153f9f002eada41757118d25ba9 and fixed in 5.19 with commit c4c79525042a4a7df96b73477feaf232fe44ae81 |
| |
| 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-2022-49680 |
| 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: |
| arch/arm/mach-exynos/exynos.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/545ae5cbae839ce39bfe09828e413f1c916082de |
| https://git.kernel.org/stable/c/31d09571bb071c20f6bdc0bb7ac1ef8dd2987c04 |
| https://git.kernel.org/stable/c/7571bcecf01b69f0d3ec60ca41ce5d4c75411a4a |
| https://git.kernel.org/stable/c/f9b77a52937582a5b99a5a07e4ef1e2f48f87347 |
| https://git.kernel.org/stable/c/68f28d52e6cbab8dcfa249cac4356d1d0573e868 |
| https://git.kernel.org/stable/c/d23f76018e17618559da9eea179d137362023f95 |
| https://git.kernel.org/stable/c/fc354856e9fad9cd36e2ad28f9da70716025055a |
| https://git.kernel.org/stable/c/c4c79525042a4a7df96b73477feaf232fe44ae81 |
