| 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-2021-46932: Input: appletouch - initialize work before device registration |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Input: appletouch - initialize work before device registration |
| |
| Syzbot has reported warning in __flush_work(). This warning is caused by |
| work->func == NULL, which means missing work initialization. |
| |
| This may happen, since input_dev->close() calls |
| cancel_work_sync(&dev->work), but dev->work initalization happens _after_ |
| input_register_device() call. |
| |
| So this patch moves dev->work initialization before registering input |
| device |
| |
| The Linux kernel CVE team has assigned CVE-2021-46932 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.23 with commit 5a6eb676d3bc4d7a6feab200a92437b62ad298da and fixed in 4.4.298 with commit d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4 |
| Issue introduced in 2.6.23 with commit 5a6eb676d3bc4d7a6feab200a92437b62ad298da and fixed in 4.9.296 with commit d1962f263a176f493400b8f91bfbf2bfedce951e |
| Issue introduced in 2.6.23 with commit 5a6eb676d3bc4d7a6feab200a92437b62ad298da and fixed in 4.14.261 with commit 292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f |
| Issue introduced in 2.6.23 with commit 5a6eb676d3bc4d7a6feab200a92437b62ad298da and fixed in 4.19.224 with commit a02e1404e27855089d2b0a0acc4652c2ce65fe46 |
| Issue introduced in 2.6.23 with commit 5a6eb676d3bc4d7a6feab200a92437b62ad298da and fixed in 5.4.170 with commit 975774ea7528b489930b76a77ffc4d5379b95ff2 |
| Issue introduced in 2.6.23 with commit 5a6eb676d3bc4d7a6feab200a92437b62ad298da and fixed in 5.10.90 with commit 9f329d0d6c91142cf0ad08d23c72dd195db2633c |
| Issue introduced in 2.6.23 with commit 5a6eb676d3bc4d7a6feab200a92437b62ad298da and fixed in 5.15.13 with commit e79ff8c68acb1eddf709d3ac84716868f2a91012 |
| Issue introduced in 2.6.23 with commit 5a6eb676d3bc4d7a6feab200a92437b62ad298da and fixed in 5.16 with commit 9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0 |
| |
| 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-2021-46932 |
| 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/input/mouse/appletouch.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/d2cb2bf39a6d17ef4bdc0e59c1a35cf5751ad8f4 |
| https://git.kernel.org/stable/c/d1962f263a176f493400b8f91bfbf2bfedce951e |
| https://git.kernel.org/stable/c/292d2ac61fb0d9276a0f7b7ce4f50426f2a1c99f |
| https://git.kernel.org/stable/c/a02e1404e27855089d2b0a0acc4652c2ce65fe46 |
| https://git.kernel.org/stable/c/975774ea7528b489930b76a77ffc4d5379b95ff2 |
| https://git.kernel.org/stable/c/9f329d0d6c91142cf0ad08d23c72dd195db2633c |
| https://git.kernel.org/stable/c/e79ff8c68acb1eddf709d3ac84716868f2a91012 |
| https://git.kernel.org/stable/c/9f3ccdc3f6ef10084ceb3a47df0961bec6196fd0 |
