| 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-2024-46739: uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind |
| |
| For primary VM Bus channels, primary_channel pointer is always NULL. This |
| pointer is valid only for the secondary channels. Also, rescind callback |
| is meant for primary channels only. |
| |
| Fix NULL pointer dereference by retrieving the device_obj from the parent |
| for the primary channel. |
| |
| The Linux kernel CVE team has assigned CVE-2024-46739 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.16 with commit ca3cda6fcf1e922213a0cc58e708ffb999151db3 and fixed in 4.19.322 with commit 3d414b64ecf6fd717d7510ffb893c6f23acbf50e |
| Issue introduced in 4.16 with commit ca3cda6fcf1e922213a0cc58e708ffb999151db3 and fixed in 5.4.284 with commit f38f46da80a2ab7d1b2f8fcb444c916034a2dac4 |
| Issue introduced in 4.16 with commit ca3cda6fcf1e922213a0cc58e708ffb999151db3 and fixed in 5.10.226 with commit 1d8e020e51ab07e40f9dd00b52f1da7d96fec04c |
| Issue introduced in 4.16 with commit ca3cda6fcf1e922213a0cc58e708ffb999151db3 and fixed in 5.15.167 with commit 3005091cd537ef8cdb7530dcb2ecfba8d2ef475c |
| Issue introduced in 4.16 with commit ca3cda6fcf1e922213a0cc58e708ffb999151db3 and fixed in 6.1.110 with commit 2be373469be1774bbe03b0fa7e2854e65005b1cc |
| Issue introduced in 4.16 with commit ca3cda6fcf1e922213a0cc58e708ffb999151db3 and fixed in 6.6.51 with commit de6946be9c8bc7d2279123433495af7c21011b99 |
| Issue introduced in 4.16 with commit ca3cda6fcf1e922213a0cc58e708ffb999151db3 and fixed in 6.10.10 with commit 928e399e84f4e80307dce44e89415115c473275b |
| Issue introduced in 4.16 with commit ca3cda6fcf1e922213a0cc58e708ffb999151db3 and fixed in 6.11 with commit fb1adbd7e50f3d2de56d0a2bb0700e2e819a329e |
| |
| 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-2024-46739 |
| 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/uio/uio_hv_generic.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/3d414b64ecf6fd717d7510ffb893c6f23acbf50e |
| https://git.kernel.org/stable/c/f38f46da80a2ab7d1b2f8fcb444c916034a2dac4 |
| https://git.kernel.org/stable/c/1d8e020e51ab07e40f9dd00b52f1da7d96fec04c |
| https://git.kernel.org/stable/c/3005091cd537ef8cdb7530dcb2ecfba8d2ef475c |
| https://git.kernel.org/stable/c/2be373469be1774bbe03b0fa7e2854e65005b1cc |
| https://git.kernel.org/stable/c/de6946be9c8bc7d2279123433495af7c21011b99 |
| https://git.kernel.org/stable/c/928e399e84f4e80307dce44e89415115c473275b |
| https://git.kernel.org/stable/c/fb1adbd7e50f3d2de56d0a2bb0700e2e819a329e |
