| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49774: KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| KVM: x86/xen: Fix eventfd error handling in kvm_xen_eventfd_assign() |
| |
| Should not call eventfd_ctx_put() in case of error. |
| |
| [Introduce new goto target instead. - Paolo] |
| |
| The Linux kernel CVE team has assigned CVE-2022-49774 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit 2fd6df2f2b47d4301b1ee0fe9d627d1c061a5988 and fixed in 6.0.10 with commit d76f46f47dfde220712d1420ee5dbc546c8fc674 |
| Issue introduced in 5.19 with commit 2fd6df2f2b47d4301b1ee0fe9d627d1c061a5988 and fixed in 6.1 with commit 7353633814f6e5b4899fb9ee1483709d6bb0e1cd |
| |
| 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-2022-49774 |
| 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/x86/kvm/xen.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/d76f46f47dfde220712d1420ee5dbc546c8fc674 |
| https://git.kernel.org/stable/c/7353633814f6e5b4899fb9ee1483709d6bb0e1cd |
