| 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-2022-49608: pinctrl: ralink: Check for null return of devm_kcalloc |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| pinctrl: ralink: Check for null return of devm_kcalloc |
| |
| Because of the possible failure of the allocation, data->domains might |
| be NULL pointer and will cause the dereference of the NULL pointer |
| later. |
| Therefore, it might be better to check it and directly return -ENOMEM |
| without releasing data manually if fails, because the comment of the |
| devm_kmalloc() says "Memory allocated with this function is |
| automatically freed on driver detach.". |
| |
| The Linux kernel CVE team has assigned CVE-2022-49608 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.18 with commit a86854d0c599b3202307abceb68feee4d7061578 and fixed in 4.19.254 with commit 13596e6c9e541e90e5fc2c52b23f08b951370da9 |
| Issue introduced in 4.18 with commit a86854d0c599b3202307abceb68feee4d7061578 and fixed in 5.4.208 with commit 6194c021496addc11763d1ffa89ce5751889fe3c |
| Issue introduced in 4.18 with commit a86854d0c599b3202307abceb68feee4d7061578 and fixed in 5.10.134 with commit 5694b162f275fb9a9f89422701b2b963be11e496 |
| Issue introduced in 4.18 with commit a86854d0c599b3202307abceb68feee4d7061578 and fixed in 5.15.58 with commit 44016a85419ca0d4f1e4d0127b330f8e4e2a57d0 |
| Issue introduced in 4.18 with commit a86854d0c599b3202307abceb68feee4d7061578 and fixed in 5.18.15 with commit 5595d30c4dc27d939635c3188c68203b6ece1711 |
| Issue introduced in 4.18 with commit a86854d0c599b3202307abceb68feee4d7061578 and fixed in 5.19 with commit c3b821e8e406d5650e587b7ac624ac24e9b780a8 |
| |
| 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-2022-49608 |
| 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/pinctrl/ralink/pinctrl-ralink.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/13596e6c9e541e90e5fc2c52b23f08b951370da9 |
| https://git.kernel.org/stable/c/6194c021496addc11763d1ffa89ce5751889fe3c |
| https://git.kernel.org/stable/c/5694b162f275fb9a9f89422701b2b963be11e496 |
| https://git.kernel.org/stable/c/44016a85419ca0d4f1e4d0127b330f8e4e2a57d0 |
| https://git.kernel.org/stable/c/5595d30c4dc27d939635c3188c68203b6ece1711 |
| https://git.kernel.org/stable/c/c3b821e8e406d5650e587b7ac624ac24e9b780a8 |
