| From bippy-d175d3acf727 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-2021-47545: perf hist: Fix memory leak of a perf_hpp_fmt |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| perf hist: Fix memory leak of a perf_hpp_fmt |
| |
| perf_hpp__column_unregister() removes an entry from a list but doesn't |
| free the memory causing a memory leak spotted by leak sanitizer. |
| |
| Add the free while at the same time reducing the scope of the function |
| to static. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47545 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.14.257 with commit c5c8a26c0dc6 |
| Fixed in 4.19.220 with commit 24a139c105fa |
| Fixed in 5.4.164 with commit b380d09e44e8 |
| Fixed in 5.10.84 with commit a4c17ebdd624 |
| Fixed in 5.15.7 with commit 5b5c6f57a1f8 |
| Fixed in 5.16 with commit 0ca1f534a776 |
| |
| 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-2021-47545 |
| 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: |
| tools/perf/ui/hist.c |
| tools/perf/util/hist.h |
| |
| |
| 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/c5c8a26c0dc69a400553245e92d741fe55f91095 |
| https://git.kernel.org/stable/c/24a139c105fa0f7f99888cf328bf6a02fc841675 |
| https://git.kernel.org/stable/c/b380d09e44e8479e71e3ae8446b515a5b3166244 |
| https://git.kernel.org/stable/c/a4c17ebdd6249cb4e061358d3693383f6628e069 |
| https://git.kernel.org/stable/c/5b5c6f57a1f81499db4c8ea597898cb1b87de0b6 |
| https://git.kernel.org/stable/c/0ca1f534a776cc7d42f2c33da4732b74ec2790cd |
