| 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-2020-36777: media: dvbdev: Fix memory leak in dvb_media_device_free() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: dvbdev: Fix memory leak in dvb_media_device_free() |
| |
| dvb_media_device_free() is leaking memory. Free `dvbdev->adapter->conn` |
| before setting it to NULL, as documented in include/media/media-device.h: |
| "The media_entity instance itself must be freed explicitly by the driver |
| if required." |
| |
| The Linux kernel CVE team has assigned CVE-2020-36777 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.5 with commit 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a and fixed in 4.9.269 with commit 06854b943e0571ccbd7ad0a529babed1a98ff275 |
| Issue introduced in 4.5 with commit 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a and fixed in 4.14.233 with commit 32168ca1f123316848fffb85d059860adf3c409f |
| Issue introduced in 4.5 with commit 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a and fixed in 4.19.191 with commit cd89f79be5d553c78202f686e8e4caa5fbe94e98 |
| Issue introduced in 4.5 with commit 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a and fixed in 5.4.118 with commit 9185b3b1c143b8da409c19ac5a785aa18d67a81b |
| Issue introduced in 4.5 with commit 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a and fixed in 5.10.36 with commit 43263fd43083e412311fa764cd04a727b0c6a749 |
| Issue introduced in 4.5 with commit 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a and fixed in 5.11.20 with commit 9ad15e214fcd73694ea51967d86055f47b802066 |
| Issue introduced in 4.5 with commit 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a and fixed in 5.12.3 with commit cede24d13be6c2a62be6d7ceea63c2719b0cfa82 |
| Issue introduced in 4.5 with commit 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a and fixed in 5.13 with commit bf9a40ae8d722f281a2721779595d6df1c33a0bf |
| |
| 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-2020-36777 |
| 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-core/dvbdev.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/06854b943e0571ccbd7ad0a529babed1a98ff275 |
| https://git.kernel.org/stable/c/32168ca1f123316848fffb85d059860adf3c409f |
| https://git.kernel.org/stable/c/cd89f79be5d553c78202f686e8e4caa5fbe94e98 |
| https://git.kernel.org/stable/c/9185b3b1c143b8da409c19ac5a785aa18d67a81b |
| https://git.kernel.org/stable/c/43263fd43083e412311fa764cd04a727b0c6a749 |
| https://git.kernel.org/stable/c/9ad15e214fcd73694ea51967d86055f47b802066 |
| https://git.kernel.org/stable/c/cede24d13be6c2a62be6d7ceea63c2719b0cfa82 |
| https://git.kernel.org/stable/c/bf9a40ae8d722f281a2721779595d6df1c33a0bf |
