| 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-2021-47654: samples/landlock: Fix path_list memory leak |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| samples/landlock: Fix path_list memory leak |
| |
| Clang static analysis reports this error |
| |
| sandboxer.c:134:8: warning: Potential leak of memory |
| pointed to by 'path_list' |
| ret = 0; |
| ^ |
| path_list is allocated in parse_path() but never freed. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47654 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.13 with commit ba84b0bf5a164f0f523656c1e37568c30f3f3303 and fixed in 5.15.33 with commit 20fbf100f84b9aeb9c91421abe1927bc152bc32b |
| Issue introduced in 5.13 with commit ba84b0bf5a164f0f523656c1e37568c30f3f3303 and fixed in 5.16.19 with commit 49b0d8bf05809df5f87e5c03e26d74bdfdab4571 |
| Issue introduced in 5.13 with commit ba84b0bf5a164f0f523656c1e37568c30f3f3303 and fixed in 5.17.2 with commit 017196730299ccd6eed24bbfabed8af4ffd81530 |
| Issue introduced in 5.13 with commit ba84b0bf5a164f0f523656c1e37568c30f3f3303 and fixed in 5.18 with commit 66b513b7c64a7290c1fbb88e657f7cece992e131 |
| |
| 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-2021-47654 |
| 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: |
| samples/landlock/sandboxer.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/20fbf100f84b9aeb9c91421abe1927bc152bc32b |
| https://git.kernel.org/stable/c/49b0d8bf05809df5f87e5c03e26d74bdfdab4571 |
| https://git.kernel.org/stable/c/017196730299ccd6eed24bbfabed8af4ffd81530 |
| https://git.kernel.org/stable/c/66b513b7c64a7290c1fbb88e657f7cece992e131 |
