| 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-2024-42100: clk: sunxi-ng: common: Don't call hw_to_ccu_common on hw without common |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| clk: sunxi-ng: common: Don't call hw_to_ccu_common on hw without common |
| |
| In order to set the rate range of a hw sunxi_ccu_probe calls |
| hw_to_ccu_common() assuming all entries in desc->ccu_clks are contained |
| in a ccu_common struct. This assumption is incorrect and, in |
| consequence, causes invalid pointer de-references. |
| |
| Remove the faulty call. Instead, add one more loop that iterates over |
| the ccu_clks and sets the rate range, if required. |
| |
| The Linux kernel CVE team has assigned CVE-2024-42100 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.6.31 with commit 547263745e15a038ec3954b5c283805529377626 and fixed in 6.6.39 with commit 14c78d69dbca6a28af14095f639ec4318ec07fdc |
| Issue introduced in 6.9 with commit b914ec33b391ec766545a41f0cfc0de3e0b388d7 and fixed in 6.9.9 with commit 7a0e2738cb6da5a55c9908dff333600aeb263e07 |
| Issue introduced in 6.9 with commit b914ec33b391ec766545a41f0cfc0de3e0b388d7 and fixed in 6.10 with commit ea977d742507e534d9fe4f4d74256f6b7f589338 |
| Issue introduced in 6.8.10 with commit 761cbd9c0e4ed082b548bf6a0de25eebad24309d |
| |
| 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-2024-42100 |
| 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/clk/sunxi-ng/ccu_common.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/14c78d69dbca6a28af14095f639ec4318ec07fdc |
| https://git.kernel.org/stable/c/7a0e2738cb6da5a55c9908dff333600aeb263e07 |
| https://git.kernel.org/stable/c/ea977d742507e534d9fe4f4d74256f6b7f589338 |
