| 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-2021-47655: media: venus: vdec: fixed possible memory leak issue |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: venus: vdec: fixed possible memory leak issue |
| |
| The venus_helper_alloc_dpb_bufs() implementation allows an early return |
| on an error path when checking the id from ida_alloc_min() which would |
| not release the earlier buffer allocation. |
| |
| Move the direct kfree() from the error checking of dma_alloc_attrs() to |
| the common fail path to ensure that allocations are released on all |
| error paths in this function. |
| |
| Addresses-Coverity: 1494120 ("Resource leak") |
| |
| The Linux kernel CVE team has assigned CVE-2021-47655 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.16 with commit 40d87aafee29fb01ce1e1868502fb2059a6a7f34 and fixed in 5.16.19 with commit 55bccafc246b2e64763a155ec454470c07a54a6e |
| Issue introduced in 5.16 with commit 40d87aafee29fb01ce1e1868502fb2059a6a7f34 and fixed in 5.17.2 with commit 5f89d05ba93df9c2cdfe493843f93288e55e99eb |
| Issue introduced in 5.16 with commit 40d87aafee29fb01ce1e1868502fb2059a6a7f34 and fixed in 5.18 with commit 8403fdd775858a7bf04868d43daea0acbe49ddfc |
| |
| 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-2021-47655 |
| 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/platform/qcom/venus/helpers.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/5cedfe8aaf1875a5305897107b7f298db4260019 |
| https://git.kernel.org/stable/c/55bccafc246b2e64763a155ec454470c07a54a6e |
| https://git.kernel.org/stable/c/5f89d05ba93df9c2cdfe493843f93288e55e99eb |
| https://git.kernel.org/stable/c/8403fdd775858a7bf04868d43daea0acbe49ddfc |
