| 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-2021-47121: net: caif: fix memory leak in cfusbl_device_notify |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: caif: fix memory leak in cfusbl_device_notify |
| |
| In case of caif_enroll_dev() fail, allocated |
| link_support won't be assigned to the corresponding |
| structure. So simply free allocated pointer in case |
| of error. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47121 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.3 with commit 7ad65bf68d705b445ef10b77ab50dab22be185ee and fixed in 4.4.272 with commit cc302e30a504e6b60a9ac8df7988646f46cd0294 |
| Issue introduced in 3.3 with commit 7ad65bf68d705b445ef10b77ab50dab22be185ee and fixed in 4.9.272 with commit 81afc61cb6e2b553f2c5f992fa79e0ae73857141 |
| Issue introduced in 3.3 with commit 7ad65bf68d705b445ef10b77ab50dab22be185ee and fixed in 4.14.236 with commit e8b37f5009ea7095529790f022859711e6939c76 |
| Issue introduced in 3.3 with commit 7ad65bf68d705b445ef10b77ab50dab22be185ee and fixed in 4.19.194 with commit 9ea0ab48e755d8f29fe89eb235fb86176fdb597f |
| Issue introduced in 3.3 with commit 7ad65bf68d705b445ef10b77ab50dab22be185ee and fixed in 5.4.125 with commit 4d94f530cd24c85aede6e72b8923f371b45d6886 |
| Issue introduced in 3.3 with commit 7ad65bf68d705b445ef10b77ab50dab22be185ee and fixed in 5.10.43 with commit 46403c1f80b0d3f937ff9c4f5edc63bb64bc5051 |
| Issue introduced in 3.3 with commit 7ad65bf68d705b445ef10b77ab50dab22be185ee and fixed in 5.12.10 with commit dde8686985ec24d6b00487080a906609bd613ea1 |
| Issue introduced in 3.3 with commit 7ad65bf68d705b445ef10b77ab50dab22be185ee and fixed in 5.13 with commit 7f5d86669fa4d485523ddb1d212e0a2d90bd62bb |
| |
| 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-2021-47121 |
| 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: |
| net/caif/caif_usb.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/cc302e30a504e6b60a9ac8df7988646f46cd0294 |
| https://git.kernel.org/stable/c/81afc61cb6e2b553f2c5f992fa79e0ae73857141 |
| https://git.kernel.org/stable/c/e8b37f5009ea7095529790f022859711e6939c76 |
| https://git.kernel.org/stable/c/9ea0ab48e755d8f29fe89eb235fb86176fdb597f |
| https://git.kernel.org/stable/c/4d94f530cd24c85aede6e72b8923f371b45d6886 |
| https://git.kernel.org/stable/c/46403c1f80b0d3f937ff9c4f5edc63bb64bc5051 |
| https://git.kernel.org/stable/c/dde8686985ec24d6b00487080a906609bd613ea1 |
| https://git.kernel.org/stable/c/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb |
