| 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-2021-47330: tty: serial: 8250: serial_cs: Fix a memory leak in error handling path |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tty: serial: 8250: serial_cs: Fix a memory leak in error handling path |
| |
| In the probe function, if the final 'serial_config()' fails, 'info' is |
| leaking. |
| |
| Add a resource handling path to free this memory. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47330 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.4.276 with commit b5a2799cd62ed30c81b22c23028d9ee374e2138c |
| Fixed in 4.9.276 with commit 331f5923fce4f45b8170ccf06c529e8eb28f37bc |
| Fixed in 4.14.240 with commit 34f4590f5ec9859ea9136249f528173d150bd584 |
| Fixed in 4.19.198 with commit cddee5c287e26f6b2ba5c0ffdfc3a846f2f10461 |
| Fixed in 5.4.134 with commit ee16bed959862a6de2913f71a04cb563d7237b67 |
| Fixed in 5.10.52 with commit 7a80f71601af015856a0aeb1e3c294037ac3dd32 |
| Fixed in 5.12.19 with commit c39cf4df19acf0133fa284a8cd83fad42cd13cc2 |
| Fixed in 5.13.4 with commit b2ef1f5de40342de44fc5355321595f91774dab5 |
| Fixed in 5.14 with commit fad92b11047a748c996ebd6cfb164a63814eeb2e |
| |
| 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-2021-47330 |
| 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/tty/serial/8250/serial_cs.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/b5a2799cd62ed30c81b22c23028d9ee374e2138c |
| https://git.kernel.org/stable/c/331f5923fce4f45b8170ccf06c529e8eb28f37bc |
| https://git.kernel.org/stable/c/34f4590f5ec9859ea9136249f528173d150bd584 |
| https://git.kernel.org/stable/c/cddee5c287e26f6b2ba5c0ffdfc3a846f2f10461 |
| https://git.kernel.org/stable/c/ee16bed959862a6de2913f71a04cb563d7237b67 |
| https://git.kernel.org/stable/c/7a80f71601af015856a0aeb1e3c294037ac3dd32 |
| https://git.kernel.org/stable/c/c39cf4df19acf0133fa284a8cd83fad42cd13cc2 |
| https://git.kernel.org/stable/c/b2ef1f5de40342de44fc5355321595f91774dab5 |
| https://git.kernel.org/stable/c/fad92b11047a748c996ebd6cfb164a63814eeb2e |
