| 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-2022-49836: siox: fix possible memory leak in siox_device_add() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| siox: fix possible memory leak in siox_device_add() |
| |
| If device_register() returns error in siox_device_add(), |
| the name allocated by dev_set_name() need be freed. As |
| comment of device_register() says, it should use put_device() |
| to give up the reference in the error path. So fix this |
| by calling put_device(), then the name can be freed in |
| kobject_cleanup(), and sdevice is freed in siox_device_release(), |
| set it to null in error path. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49836 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.16 with commit bbecb07fa0af9a41507ce06d4631fdb3b5059417 and fixed in 4.19.267 with commit 0a5da069603ecc3d7aa09167450235462adaa295 |
| Issue introduced in 4.16 with commit bbecb07fa0af9a41507ce06d4631fdb3b5059417 and fixed in 5.4.225 with commit f9fe7ba4ea5b24ffdf8e125f660aca3ba4a147fb |
| Issue introduced in 4.16 with commit bbecb07fa0af9a41507ce06d4631fdb3b5059417 and fixed in 5.10.156 with commit a4b5423f88a17a36550ae8c16c46779b1ee42f4b |
| Issue introduced in 4.16 with commit bbecb07fa0af9a41507ce06d4631fdb3b5059417 and fixed in 5.15.80 with commit 5d03c2911c529ea4d6ebfec53425f1091e8d402b |
| Issue introduced in 4.16 with commit bbecb07fa0af9a41507ce06d4631fdb3b5059417 and fixed in 6.0.10 with commit d9c31e728843259209fb530c59995e4fe262699f |
| Issue introduced in 4.16 with commit bbecb07fa0af9a41507ce06d4631fdb3b5059417 and fixed in 6.1 with commit 6e63153db50059fb78b8a8447b132664887d24e3 |
| |
| 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-2022-49836 |
| 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/siox/siox-core.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/0a5da069603ecc3d7aa09167450235462adaa295 |
| https://git.kernel.org/stable/c/f9fe7ba4ea5b24ffdf8e125f660aca3ba4a147fb |
| https://git.kernel.org/stable/c/a4b5423f88a17a36550ae8c16c46779b1ee42f4b |
| https://git.kernel.org/stable/c/5d03c2911c529ea4d6ebfec53425f1091e8d402b |
| https://git.kernel.org/stable/c/d9c31e728843259209fb530c59995e4fe262699f |
| https://git.kernel.org/stable/c/6e63153db50059fb78b8a8447b132664887d24e3 |
