| 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-2024-56671: gpio: graniterapids: Fix vGPIO driver crash |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| gpio: graniterapids: Fix vGPIO driver crash |
| |
| Move setting irq_chip.name from probe() function to the initialization |
| of "irq_chip" struct in order to fix vGPIO driver crash during bootup. |
| |
| Crash was caused by unauthorized modification of irq_chip.name field |
| where irq_chip struct was initialized as const. |
| |
| This behavior is a consequence of suboptimal implementation of |
| gpio_irq_chip_set_chip(), which should be changed to avoid |
| casting away const qualifier. |
| |
| Crash log: |
| BUG: unable to handle page fault for address: ffffffffc0ba81c0 |
| /#PF: supervisor write access in kernel mode |
| /#PF: error_code(0x0003) - permissions violation |
| CPU: 33 UID: 0 PID: 1075 Comm: systemd-udevd Not tainted 6.12.0-rc6-00077-g2e1b3cc9d7f7 #1 |
| Hardware name: Intel Corporation Kaseyville RP/Kaseyville RP, BIOS KVLDCRB1.PGS.0026.D73.2410081258 10/08/2024 |
| RIP: 0010:gnr_gpio_probe+0x171/0x220 [gpio_graniterapids] |
| |
| The Linux kernel CVE team has assigned CVE-2024-56671 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit ecc4b1418e2399753af7ef304d01f45e8e942286 and fixed in 6.12.6 with commit e631cab10c6b287a33c35953e6dbda1f7f89bc1f |
| Issue introduced in 6.10 with commit ecc4b1418e2399753af7ef304d01f45e8e942286 and fixed in 6.13 with commit eb9640fd1ce666610b77f5997596e9570a36378f |
| |
| 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-2024-56671 |
| 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/gpio/gpio-graniterapids.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/e631cab10c6b287a33c35953e6dbda1f7f89bc1f |
| https://git.kernel.org/stable/c/eb9640fd1ce666610b77f5997596e9570a36378f |
