| 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-2022-48672: of: fdt: fix off-by-one error in unflatten_dt_nodes() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| of: fdt: fix off-by-one error in unflatten_dt_nodes() |
| |
| Commit 78c44d910d3e ("drivers/of: Fix depth when unflattening devicetree") |
| forgot to fix up the depth check in the loop body in unflatten_dt_nodes() |
| which makes it possible to overflow the nps[] buffer... |
| |
| Found by Linux Verification Center (linuxtesting.org) with the SVACE static |
| analysis tool. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48672 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.7 with commit 78c44d910d3e5f96dc6b3695fc1e4efd7c46a455 and fixed in 4.14.295 with commit cbdda20ce363356698835185801a58a28f644853 |
| Issue introduced in 4.7 with commit 78c44d910d3e5f96dc6b3695fc1e4efd7c46a455 and fixed in 4.19.260 with commit 2566706ac6393386a4e7c4ce23fe17f4c98d9aa0 |
| Issue introduced in 4.7 with commit 78c44d910d3e5f96dc6b3695fc1e4efd7c46a455 and fixed in 5.4.215 with commit e0e88c25f88b9805572263c9ed20f1d88742feaf |
| Issue introduced in 4.7 with commit 78c44d910d3e5f96dc6b3695fc1e4efd7c46a455 and fixed in 5.10.145 with commit ee4369260e77821602102dcc7d792de39a56365c |
| Issue introduced in 4.7 with commit 78c44d910d3e5f96dc6b3695fc1e4efd7c46a455 and fixed in 5.15.70 with commit ba6b9f7cc1108bad6e2c53b1d6e0156379188db7 |
| Issue introduced in 4.7 with commit 78c44d910d3e5f96dc6b3695fc1e4efd7c46a455 and fixed in 5.19.11 with commit 2133f451311671c7c42b5640d2b999326b39aa0e |
| Issue introduced in 4.7 with commit 78c44d910d3e5f96dc6b3695fc1e4efd7c46a455 and fixed in 6.0 with commit 2f945a792f67815abca26fa8a5e863ccf3fa1181 |
| |
| 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-2022-48672 |
| 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/of/fdt.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/cbdda20ce363356698835185801a58a28f644853 |
| https://git.kernel.org/stable/c/2566706ac6393386a4e7c4ce23fe17f4c98d9aa0 |
| https://git.kernel.org/stable/c/e0e88c25f88b9805572263c9ed20f1d88742feaf |
| https://git.kernel.org/stable/c/ee4369260e77821602102dcc7d792de39a56365c |
| https://git.kernel.org/stable/c/ba6b9f7cc1108bad6e2c53b1d6e0156379188db7 |
| https://git.kernel.org/stable/c/2133f451311671c7c42b5640d2b999326b39aa0e |
| https://git.kernel.org/stable/c/2f945a792f67815abca26fa8a5e863ccf3fa1181 |
