| 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-2021-47651: soc: qcom: rpmpd: Check for null return of devm_kcalloc |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| soc: qcom: rpmpd: 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-2021-47651 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.1 with commit bbe3a66c3f5a65fb3d702351bac2a6033944d389 and fixed in 5.4.189 with commit 755dbc3d73789ac9f0017c729abf5e4b153bf799 |
| Issue introduced in 5.1 with commit bbe3a66c3f5a65fb3d702351bac2a6033944d389 and fixed in 5.10.110 with commit b5d6eba71997b6d661935d2b15094ac7f9f6132d |
| Issue introduced in 5.1 with commit bbe3a66c3f5a65fb3d702351bac2a6033944d389 and fixed in 5.15.33 with commit 724376c30af5a57686b223dbcd6188e07d2a1de2 |
| Issue introduced in 5.1 with commit bbe3a66c3f5a65fb3d702351bac2a6033944d389 and fixed in 5.16.19 with commit 84b89fa877ad576e9ee8130f412cfd592f274508 |
| Issue introduced in 5.1 with commit bbe3a66c3f5a65fb3d702351bac2a6033944d389 and fixed in 5.17.2 with commit 31b5124d742969ea8bf7a1360596f548ca23e770 |
| Issue introduced in 5.1 with commit bbe3a66c3f5a65fb3d702351bac2a6033944d389 and fixed in 5.18 with commit 5a811126d38f9767a20cc271b34db7c8efc5a46c |
| |
| 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-2021-47651 |
| 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/soc/qcom/rpmpd.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/755dbc3d73789ac9f0017c729abf5e4b153bf799 |
| https://git.kernel.org/stable/c/b5d6eba71997b6d661935d2b15094ac7f9f6132d |
| https://git.kernel.org/stable/c/724376c30af5a57686b223dbcd6188e07d2a1de2 |
| https://git.kernel.org/stable/c/84b89fa877ad576e9ee8130f412cfd592f274508 |
| https://git.kernel.org/stable/c/31b5124d742969ea8bf7a1360596f548ca23e770 |
| https://git.kernel.org/stable/c/5a811126d38f9767a20cc271b34db7c8efc5a46c |
