| 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-2021-47054: bus: qcom: Put child node before return |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| bus: qcom: Put child node before return |
| |
| Put child node before return to fix potential reference count leak. |
| Generally, the reference count of child is incremented and decremented |
| automatically in the macro for_each_available_child_of_node() and should |
| be decremented manually if the loop is broken in loop body. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47054 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.9 with commit 335a127548081322bd2b294d715418648912f20c and fixed in 4.9.269 with commit a6191e91c10e50bd51db65a00e03d02b6b0cf8c4 |
| Issue introduced in 4.9 with commit 335a127548081322bd2b294d715418648912f20c and fixed in 4.14.233 with commit 94810fc52925eb122a922df7f9966cf3f4ba7391 |
| Issue introduced in 4.9 with commit 335a127548081322bd2b294d715418648912f20c and fixed in 4.19.191 with commit a399dd80e697a02cfb23e2fc09b87849994043d9 |
| Issue introduced in 4.9 with commit 335a127548081322bd2b294d715418648912f20c and fixed in 5.4.119 with commit 3a76ec28824c01b57aa1f0927841d75e4f167cb8 |
| Issue introduced in 4.9 with commit 335a127548081322bd2b294d715418648912f20c and fixed in 5.10.37 with commit 00f6abd3509b1d70d0ab0fbe65ce5685cebed8be |
| Issue introduced in 4.9 with commit 335a127548081322bd2b294d715418648912f20c and fixed in 5.11.21 with commit 6b68c03dfc79cd95a58dfd03f91f6e82829a1b0c |
| Issue introduced in 4.9 with commit 335a127548081322bd2b294d715418648912f20c and fixed in 5.12.4 with commit c6f8e0dc8da1cd78d640dee392071cc2326ec1b2 |
| Issue introduced in 4.9 with commit 335a127548081322bd2b294d715418648912f20c and fixed in 5.13 with commit ac6ad7c2a862d682bb584a4bc904d89fa7721af8 |
| |
| 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-2021-47054 |
| 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/bus/qcom-ebi2.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/a6191e91c10e50bd51db65a00e03d02b6b0cf8c4 |
| https://git.kernel.org/stable/c/94810fc52925eb122a922df7f9966cf3f4ba7391 |
| https://git.kernel.org/stable/c/a399dd80e697a02cfb23e2fc09b87849994043d9 |
| https://git.kernel.org/stable/c/3a76ec28824c01b57aa1f0927841d75e4f167cb8 |
| https://git.kernel.org/stable/c/00f6abd3509b1d70d0ab0fbe65ce5685cebed8be |
| https://git.kernel.org/stable/c/6b68c03dfc79cd95a58dfd03f91f6e82829a1b0c |
| https://git.kernel.org/stable/c/c6f8e0dc8da1cd78d640dee392071cc2326ec1b2 |
| https://git.kernel.org/stable/c/ac6ad7c2a862d682bb584a4bc904d89fa7721af8 |
