| 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-2022-49437: powerpc/xive: Fix refcount leak in xive_spapr_init |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| powerpc/xive: Fix refcount leak in xive_spapr_init |
| |
| of_find_compatible_node() returns a node pointer with refcount |
| incremented, we should use of_node_put() on it when done. |
| Add missing of_node_put() to avoid refcount leak. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49437 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.14 with commit eac1e731b59ee3b5f5e641a7765c7ed41ed26226 and fixed in 5.15.46 with commit 65f11ccdd746e0e7f0b469cc989ba43d4f30ecfe |
| Issue introduced in 4.14 with commit eac1e731b59ee3b5f5e641a7765c7ed41ed26226 and fixed in 5.17.14 with commit 6e806485d851986a2445267608f27cb4ba2ed774 |
| Issue introduced in 4.14 with commit eac1e731b59ee3b5f5e641a7765c7ed41ed26226 and fixed in 5.18.3 with commit cc62dde2a5f4ba14016fd9caec76f08d388f4b9c |
| Issue introduced in 4.14 with commit eac1e731b59ee3b5f5e641a7765c7ed41ed26226 and fixed in 5.19 with commit 1d1fb9618bdd5a5fbf9a9eb75133da301d33721c |
| |
| 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-2022-49437 |
| 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/powerpc/sysdev/xive/spapr.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/65f11ccdd746e0e7f0b469cc989ba43d4f30ecfe |
| https://git.kernel.org/stable/c/6e806485d851986a2445267608f27cb4ba2ed774 |
| https://git.kernel.org/stable/c/cc62dde2a5f4ba14016fd9caec76f08d388f4b9c |
| https://git.kernel.org/stable/c/1d1fb9618bdd5a5fbf9a9eb75133da301d33721c |
