| 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-2022-49189: clk: qcom: clk-rcg2: Update logic to calculate D value for RCG |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| clk: qcom: clk-rcg2: Update logic to calculate D value for RCG |
| |
| The display pixel clock has a requirement on certain newer platforms to |
| support M/N as (2/3) and the final D value calculated results in |
| underflow errors. |
| As the current implementation does not check for D value is within |
| the accepted range for a given M & N value. Update the logic to |
| calculate the final D value based on the range. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49189 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.16 with commit 99cbd064b059f222c8839ba433a68b2d6ee33066 and fixed in 5.4.189 with commit 52592f9afbfe01bce8f8953e4f19cbe3bcbdbd3a |
| Issue introduced in 3.16 with commit 99cbd064b059f222c8839ba433a68b2d6ee33066 and fixed in 5.10.110 with commit 334720f418f57b1d969dad2117b21f9388cb9395 |
| Issue introduced in 3.16 with commit 99cbd064b059f222c8839ba433a68b2d6ee33066 and fixed in 5.15.33 with commit 34dca60982e93e69ae442aa2d36ce61c9a3bb563 |
| Issue introduced in 3.16 with commit 99cbd064b059f222c8839ba433a68b2d6ee33066 and fixed in 5.16.19 with commit 96888f0dcf351e758b9df57e015a48427ca709c1 |
| Issue introduced in 3.16 with commit 99cbd064b059f222c8839ba433a68b2d6ee33066 and fixed in 5.17.2 with commit a4e2e31971354790b0d1fa3e783452a9d135fcff |
| Issue introduced in 3.16 with commit 99cbd064b059f222c8839ba433a68b2d6ee33066 and fixed in 5.18 with commit 58922910add18583d5273c2edcdb9fd7bf4eca02 |
| |
| 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-2022-49189 |
| 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/qcom/clk-rcg2.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/52592f9afbfe01bce8f8953e4f19cbe3bcbdbd3a |
| https://git.kernel.org/stable/c/334720f418f57b1d969dad2117b21f9388cb9395 |
| https://git.kernel.org/stable/c/34dca60982e93e69ae442aa2d36ce61c9a3bb563 |
| https://git.kernel.org/stable/c/96888f0dcf351e758b9df57e015a48427ca709c1 |
| https://git.kernel.org/stable/c/a4e2e31971354790b0d1fa3e783452a9d135fcff |
| https://git.kernel.org/stable/c/58922910add18583d5273c2edcdb9fd7bf4eca02 |
