| 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-2023-53059: platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| platform/chrome: cros_ec_chardev: fix kernel data leak from ioctl |
| |
| It is possible to peep kernel page's data by providing larger `insize` |
| in struct cros_ec_command[1] when invoking EC host commands. |
| |
| Fix it by using zeroed memory. |
| |
| [1]: https://elixir.bootlin.com/linux/v6.2/source/include/linux/platform_data/cros_ec_proto.h#L74 |
| |
| The Linux kernel CVE team has assigned CVE-2023-53059 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4 with commit eda2e30c6684d67288edb841c6125d48c608a242 and fixed in 5.4.240 with commit 13493ad6a220cb3f6f3552a16b4f2753a118b633 |
| Issue introduced in 5.4 with commit eda2e30c6684d67288edb841c6125d48c608a242 and fixed in 5.10.177 with commit f86ff88a1548ccf5a13960c0e7625ca787ea0993 |
| Issue introduced in 5.4 with commit eda2e30c6684d67288edb841c6125d48c608a242 and fixed in 5.15.105 with commit ebea2e16504f40d2c2bac42ad5c5a3de5ce034b4 |
| Issue introduced in 5.4 with commit eda2e30c6684d67288edb841c6125d48c608a242 and fixed in 6.1.22 with commit eab28bfafcd1245a3510df9aa9eb940589956ea6 |
| Issue introduced in 5.4 with commit eda2e30c6684d67288edb841c6125d48c608a242 and fixed in 6.2.9 with commit a0d8644784f73fa39f57f72f374eefaba2bf48a0 |
| Issue introduced in 5.4 with commit eda2e30c6684d67288edb841c6125d48c608a242 and fixed in 6.3 with commit b20cf3f89c56b5f6a38b7f76a8128bf9f291bbd3 |
| |
| 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-2023-53059 |
| 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/platform/chrome/cros_ec_chardev.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/13493ad6a220cb3f6f3552a16b4f2753a118b633 |
| https://git.kernel.org/stable/c/f86ff88a1548ccf5a13960c0e7625ca787ea0993 |
| https://git.kernel.org/stable/c/ebea2e16504f40d2c2bac42ad5c5a3de5ce034b4 |
| https://git.kernel.org/stable/c/eab28bfafcd1245a3510df9aa9eb940589956ea6 |
| https://git.kernel.org/stable/c/a0d8644784f73fa39f57f72f374eefaba2bf48a0 |
| https://git.kernel.org/stable/c/b20cf3f89c56b5f6a38b7f76a8128bf9f291bbd3 |
