| 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-2022-49212: mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init |
| |
| The reference counting issue happens in several error handling paths |
| on a refcounted object "nc->dmac". In these paths, the function simply |
| returns the error code, forgetting to balance the reference count of |
| "nc->dmac", increased earlier by dma_request_channel(), which may |
| cause refcount leaks. |
| |
| Fix it by decrementing the refcount of specific object in those error |
| paths. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49212 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.12 with commit f88fc122cc34c2545dec9562eaab121494e401ef and fixed in 4.14.276 with commit 0856bf27057561f42b37df111603cf5a0d040294 |
| Issue introduced in 4.12 with commit f88fc122cc34c2545dec9562eaab121494e401ef and fixed in 4.19.238 with commit 9843c9c98f26c6ad843260b19bfdaa2598f2ae1e |
| Issue introduced in 4.12 with commit f88fc122cc34c2545dec9562eaab121494e401ef and fixed in 5.4.189 with commit 9b08d211db4c447eb1a07df65e45e0aa772e0fa6 |
| Issue introduced in 4.12 with commit f88fc122cc34c2545dec9562eaab121494e401ef and fixed in 5.10.110 with commit a3587259ae553e41d1ce8c7435351a5d6b299a11 |
| Issue introduced in 4.12 with commit f88fc122cc34c2545dec9562eaab121494e401ef and fixed in 5.15.33 with commit fe0e2ce5c87e9c0b9485ff566362030aa55972cf |
| Issue introduced in 4.12 with commit f88fc122cc34c2545dec9562eaab121494e401ef and fixed in 5.16.19 with commit 8baea2b96fa90af8d0f937caf4cf2105ee094d93 |
| Issue introduced in 4.12 with commit f88fc122cc34c2545dec9562eaab121494e401ef and fixed in 5.17.2 with commit f1694169f3674cdf7553aed06864254635679878 |
| Issue introduced in 4.12 with commit f88fc122cc34c2545dec9562eaab121494e401ef and fixed in 5.18 with commit fecbd4a317c95d73c849648c406bcf1b6a0ec1cf |
| |
| 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-2022-49212 |
| 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/mtd/nand/raw/atmel/nand-controller.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/0856bf27057561f42b37df111603cf5a0d040294 |
| https://git.kernel.org/stable/c/9843c9c98f26c6ad843260b19bfdaa2598f2ae1e |
| https://git.kernel.org/stable/c/9b08d211db4c447eb1a07df65e45e0aa772e0fa6 |
| https://git.kernel.org/stable/c/a3587259ae553e41d1ce8c7435351a5d6b299a11 |
| https://git.kernel.org/stable/c/fe0e2ce5c87e9c0b9485ff566362030aa55972cf |
| https://git.kernel.org/stable/c/8baea2b96fa90af8d0f937caf4cf2105ee094d93 |
| https://git.kernel.org/stable/c/f1694169f3674cdf7553aed06864254635679878 |
| https://git.kernel.org/stable/c/fecbd4a317c95d73c849648c406bcf1b6a0ec1cf |
