| 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-2021-47074: nvme-loop: fix memory leak in nvme_loop_create_ctrl() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| nvme-loop: fix memory leak in nvme_loop_create_ctrl() |
| |
| When creating loop ctrl in nvme_loop_create_ctrl(), if nvme_init_ctrl() |
| fails, the loop ctrl should be freed before jumping to the "out" label. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47074 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.8 with commit 3a85a5de29ea779634ddfd768059e06196687aba and fixed in 5.10.40 with commit 9c980795ccd77e8abec33dd6fe28dfe1c4083e65 |
| Issue introduced in 4.8 with commit 3a85a5de29ea779634ddfd768059e06196687aba and fixed in 5.12.7 with commit 551ba08d4b7eb26f75758cdb9f15105b276517ad |
| Issue introduced in 4.8 with commit 3a85a5de29ea779634ddfd768059e06196687aba and fixed in 5.13 with commit 03504e3b54cc8118cc26c064e60a0b00c2308708 |
| |
| 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-2021-47074 |
| 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/nvme/target/loop.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/9c980795ccd77e8abec33dd6fe28dfe1c4083e65 |
| https://git.kernel.org/stable/c/551ba08d4b7eb26f75758cdb9f15105b276517ad |
| https://git.kernel.org/stable/c/03504e3b54cc8118cc26c064e60a0b00c2308708 |
