| 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-2021-47122: net: caif: fix memory leak in caif_device_notify |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: caif: fix memory leak in caif_device_notify |
| |
| In case of caif_enroll_dev() fail, allocated |
| link_support won't be assigned to the corresponding |
| structure. So simply free allocated pointer in case |
| of error |
| |
| The Linux kernel CVE team has assigned CVE-2021-47122 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.3 with commit 7c18d2205ea76eef9674e59e1ecae4f332a53e9e and fixed in 4.4.272 with commit b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8 |
| Issue introduced in 3.3 with commit 7c18d2205ea76eef9674e59e1ecae4f332a53e9e and fixed in 4.9.272 with commit 9348c1f10932f13b299cbc8b1bd5f780751fae49 |
| Issue introduced in 3.3 with commit 7c18d2205ea76eef9674e59e1ecae4f332a53e9e and fixed in 4.14.236 with commit 4bca2034b41c15b62d47a19158bb76235fd4455d |
| Issue introduced in 3.3 with commit 7c18d2205ea76eef9674e59e1ecae4f332a53e9e and fixed in 4.19.194 with commit 3be863c11cab725add9fef4237ed4e232c3fc3bb |
| Issue introduced in 3.3 with commit 7c18d2205ea76eef9674e59e1ecae4f332a53e9e and fixed in 5.4.125 with commit f52f4fd67264c70cd0b4ba326962ebe12d9cba94 |
| Issue introduced in 3.3 with commit 7c18d2205ea76eef9674e59e1ecae4f332a53e9e and fixed in 5.10.43 with commit af2806345a37313f01b1c9f15e046745b8ee2daa |
| Issue introduced in 3.3 with commit 7c18d2205ea76eef9674e59e1ecae4f332a53e9e and fixed in 5.12.10 with commit 6a0e317f61094d377335547e015dd2ff12caf893 |
| Issue introduced in 3.3 with commit 7c18d2205ea76eef9674e59e1ecae4f332a53e9e and fixed in 5.13 with commit b53558a950a89824938e9811eddfc8efcd94e1bb |
| |
| 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-2021-47122 |
| 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: |
| net/caif/caif_dev.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/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8 |
| https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49 |
| https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455d |
| https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bb |
| https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94 |
| https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daa |
| https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893 |
| https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bb |
