| 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-2022-48772: media: lgdt3306a: Add a check against null-pointer-def |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: lgdt3306a: Add a check against null-pointer-def |
| |
| The driver should check whether the client provides the platform_data. |
| |
| The following log reveals it: |
| |
| [ 29.610324] BUG: KASAN: null-ptr-deref in kmemdup+0x30/0x40 |
| [ 29.610730] Read of size 40 at addr 0000000000000000 by task bash/414 |
| [ 29.612820] Call Trace: |
| [ 29.613030] <TASK> |
| [ 29.613201] dump_stack_lvl+0x56/0x6f |
| [ 29.613496] ? kmemdup+0x30/0x40 |
| [ 29.613754] print_report.cold+0x494/0x6b7 |
| [ 29.614082] ? kmemdup+0x30/0x40 |
| [ 29.614340] kasan_report+0x8a/0x190 |
| [ 29.614628] ? kmemdup+0x30/0x40 |
| [ 29.614888] kasan_check_range+0x14d/0x1d0 |
| [ 29.615213] memcpy+0x20/0x60 |
| [ 29.615454] kmemdup+0x30/0x40 |
| [ 29.615700] lgdt3306a_probe+0x52/0x310 |
| [ 29.616339] i2c_device_probe+0x951/0xa90 |
| |
| The Linux kernel CVE team has assigned CVE-2022-48772 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.278 with commit 8915dcd29a82096acacf54364a8425363782aea0 |
| Fixed in 5.10.219 with commit b479fd59a1f4a342b69fce34f222d93bf791dca4 |
| Fixed in 5.15.161 with commit 526238d32c3acc3d597fd8c9a34652bfe9086cea |
| Fixed in 6.1.94 with commit d082757b8359201c3864323cea4b91ea30a1e676 |
| Fixed in 6.6.34 with commit 7d12e918f2994c883f41f22552a61b9310fa1e87 |
| Fixed in 6.9.5 with commit 8e1e00718d0d9dd83337300572561e30b9c0d115 |
| Fixed in 6.10 with commit c1115ddbda9c930fba0fdd062e7a8873ebaf898d |
| |
| 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-2022-48772 |
| 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/dvb-frontends/lgdt3306a.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/8915dcd29a82096acacf54364a8425363782aea0 |
| https://git.kernel.org/stable/c/b479fd59a1f4a342b69fce34f222d93bf791dca4 |
| https://git.kernel.org/stable/c/526238d32c3acc3d597fd8c9a34652bfe9086cea |
| https://git.kernel.org/stable/c/d082757b8359201c3864323cea4b91ea30a1e676 |
| https://git.kernel.org/stable/c/7d12e918f2994c883f41f22552a61b9310fa1e87 |
| https://git.kernel.org/stable/c/8e1e00718d0d9dd83337300572561e30b9c0d115 |
| https://git.kernel.org/stable/c/c1115ddbda9c930fba0fdd062e7a8873ebaf898d |
