| 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-2023-52754: media: imon: fix access to invalid resource for the second interface |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: imon: fix access to invalid resource for the second interface |
| |
| imon driver probes two USB interfaces, and at the probe of the second |
| interface, the driver assumes blindly that the first interface got |
| bound with the same imon driver. It's usually true, but it's still |
| possible that the first interface is bound with another driver via a |
| malformed descriptor. Then it may lead to a memory corruption, as |
| spotted by syzkaller; imon driver accesses the data from drvdata as |
| struct imon_context object although it's a completely different one |
| that was assigned by another driver. |
| |
| This patch adds a sanity check -- whether the first interface is |
| really bound with the imon driver or not -- for avoiding the problem |
| above at the probe time. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52754 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.10.202 with commit 0f5068519f89d928d6c51100e4b274479123829f |
| Fixed in 5.15.140 with commit 5e0b788fb96be36d1baf1a5c88d09c7c82a0452a |
| Fixed in 6.1.64 with commit b083aaf5db2eeca9e362723258e5d8698f7dd84e |
| Fixed in 6.5.13 with commit 10ec5a97f8f5a772a1a42b4eb27196b447cd3aa9 |
| Fixed in 6.6.3 with commit 2a493a34bd6e496c55fabedd82b957193ace178f |
| Fixed in 6.7 with commit a1766a4fd83befa0b34d932d532e7ebb7fab1fa7 |
| |
| 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-2023-52754 |
| 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/media/rc/imon.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/0f5068519f89d928d6c51100e4b274479123829f |
| https://git.kernel.org/stable/c/5e0b788fb96be36d1baf1a5c88d09c7c82a0452a |
| https://git.kernel.org/stable/c/b083aaf5db2eeca9e362723258e5d8698f7dd84e |
| https://git.kernel.org/stable/c/10ec5a97f8f5a772a1a42b4eb27196b447cd3aa9 |
| https://git.kernel.org/stable/c/2a493a34bd6e496c55fabedd82b957193ace178f |
| https://git.kernel.org/stable/c/a1766a4fd83befa0b34d932d532e7ebb7fab1fa7 |
