| 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-2023-52519: HID: intel-ish-hid: ipc: Disable and reenable ACPI GPE bit |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| HID: intel-ish-hid: ipc: Disable and reenable ACPI GPE bit |
| |
| The EHL (Elkhart Lake) based platforms provide a OOB (Out of band) |
| service, which allows to wakup device when the system is in S5 (Soft-Off |
| state). This OOB service can be enabled/disabled from BIOS settings. When |
| enabled, the ISH device gets PME wake capability. To enable PME wakeup, |
| driver also needs to enable ACPI GPE bit. |
| |
| On resume, BIOS will clear the wakeup bit. So driver need to re-enable it |
| in resume function to keep the next wakeup capability. But this BIOS |
| clearing of wakeup bit doesn't decrement internal OS GPE reference count, |
| so this reenabling on every resume will cause reference count to overflow. |
| |
| So first disable and reenable ACPI GPE bit using acpi_disable_gpe(). |
| |
| The Linux kernel CVE team has assigned CVE-2023-52519 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.12 with commit 2e23a70edabe933284f690dff49497fb6b82b0e5 and fixed in 5.15.135 with commit 8781fe259dd5a178fdd1069401bbd1437f9491c5 |
| Issue introduced in 5.12 with commit 2e23a70edabe933284f690dff49497fb6b82b0e5 and fixed in 6.1.57 with commit cdcc04e844a2d22d9d25cef1e8e504a174ea9f8f |
| Issue introduced in 5.12 with commit 2e23a70edabe933284f690dff49497fb6b82b0e5 and fixed in 6.5.7 with commit 60fb3f054c99608ddb1f2466c07108da6292951e |
| Issue introduced in 5.12 with commit 2e23a70edabe933284f690dff49497fb6b82b0e5 and fixed in 6.6 with commit 8f02139ad9a7e6e5c05712f8c1501eebed8eacfd |
| |
| 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-2023-52519 |
| 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/hid/intel-ish-hid/ipc/pci-ish.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/8781fe259dd5a178fdd1069401bbd1437f9491c5 |
| https://git.kernel.org/stable/c/cdcc04e844a2d22d9d25cef1e8e504a174ea9f8f |
| https://git.kernel.org/stable/c/60fb3f054c99608ddb1f2466c07108da6292951e |
| https://git.kernel.org/stable/c/8f02139ad9a7e6e5c05712f8c1501eebed8eacfd |
