| 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-2024-38573: cppc_cpufreq: Fix possible null pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| cppc_cpufreq: Fix possible null pointer dereference |
| |
| cppc_cpufreq_get_rate() and hisi_cppc_cpufreq_get_rate() can be called from |
| different places with various parameters. So cpufreq_cpu_get() can return |
| null as 'policy' in some circumstances. |
| Fix this bug by adding null return check. |
| |
| Found by Linux Verification Center (linuxtesting.org) with SVACE. |
| |
| The Linux kernel CVE team has assigned CVE-2024-38573 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.11 with commit a28b2bfc099c6b9caa6ef697660408e076a32019 and fixed in 5.15.161 with commit 9a185cc5a79ba408e1c73375706630662304f618 |
| Issue introduced in 5.11 with commit a28b2bfc099c6b9caa6ef697660408e076a32019 and fixed in 6.1.93 with commit 769c4f355b7962895205b86ad35617873feef9a5 |
| Issue introduced in 5.11 with commit a28b2bfc099c6b9caa6ef697660408e076a32019 and fixed in 6.6.33 with commit f84b9b25d045e67a7eee5e73f21278c8ab06713c |
| Issue introduced in 5.11 with commit a28b2bfc099c6b9caa6ef697660408e076a32019 and fixed in 6.8.12 with commit b18daa4ec727c0266de5bfc78e818d168cc4aedf |
| Issue introduced in 5.11 with commit a28b2bfc099c6b9caa6ef697660408e076a32019 and fixed in 6.9.3 with commit dfec15222529d22b15e5b0d63572a9e39570cab4 |
| Issue introduced in 5.11 with commit a28b2bfc099c6b9caa6ef697660408e076a32019 and fixed in 6.10 with commit cf7de25878a1f4508c69dc9f6819c21ba177dbfe |
| |
| 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-2024-38573 |
| 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/cpufreq/cppc_cpufreq.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/9a185cc5a79ba408e1c73375706630662304f618 |
| https://git.kernel.org/stable/c/769c4f355b7962895205b86ad35617873feef9a5 |
| https://git.kernel.org/stable/c/f84b9b25d045e67a7eee5e73f21278c8ab06713c |
| https://git.kernel.org/stable/c/b18daa4ec727c0266de5bfc78e818d168cc4aedf |
| https://git.kernel.org/stable/c/dfec15222529d22b15e5b0d63572a9e39570cab4 |
| https://git.kernel.org/stable/c/cf7de25878a1f4508c69dc9f6819c21ba177dbfe |
