CVE-2021-47613
published 2024-06-19CVE-2021-47613: In the Linux kernel, the following vulnerability has been resolved: i2c: virtio: fix completion handling The driver currently assumes that the notify callback…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.21%
11.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
i2c: virtio: fix completion handling
The driver currently assumes that the notify callback is only received
when the device is done with all the queued buffers.
However, this is not true, since the notify callback could be called
without any of the queued buffers being completed (for example, with
virtio-pci and shared interrupts) or with only some of the buffers being
completed (since the driver makes them available to the device in
multiple separate virtqueue_add_sgs() calls).
This can lead to incorrect data on the I2C bus or memory corruption in
the guest if the device operates on buffers which are have been freed by
the driver. (The WARN_ON in the driver is also triggered.)
BUG kmalloc-128 (Tainted: G W ): Poison overwritten
First byte 0x0 instead of 0x6b
Allocated in i2cdev_ioctl_rdwr+0x9d/0x1de age=243 cpu=0 pid=28
memdup_user+0x2e/0xbd
i2cdev_ioctl_rdwr+0x9d/0x1de
i2cdev_ioctl+0x247/0x2ed
vfs_ioctl+0x21/0x30
sys_ioctl+0xb18/0xb41
Freed in i2cdev_ioctl_rdwr+0x1bb/0x1de age=68 cpu=0 pid=28
kfree+0x1bd/0x1cc
i2cdev_ioctl_rdwr+0x1bb/0x1de
i2cdev_ioctl+0x247/0x2ed
vfs_ioctl+0x21/0x30
sys_ioctl+0xb18/0xb41
Fix this by calling virtio_get_buf() from the notify handler like other
virtio drivers and by actually waiting for all the buffers to be
completed.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.15.15-1 (bookworm) | linux 5.15.15-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 3cfc88380413d20f777dc6648a38f683962e52bf < 9cbb957441ed8873577d7d313a3d79d69f1dad5c | 9cbb957441ed8873577d7d313a3d79d69f1dad5c |
| linux | linux | >= 3cfc88380413d20f777dc6648a38f683962e52bf < b503de239f62eca898cfb7e820d9a35499137d22 | b503de239f62eca898cfb7e820d9a35499137d22 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 0 < 5.15.15-1 | 5.15.15-1 |
| linux | linux_kernel | >= 5.15 < 5.15.10 | 5.15.10 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
kernel: i2c: virtio: fix completion handling
vendor_redhat·2024-06-19·CVSS 7.8
CVE-2021-47613 [HIGH] CWE-362 kernel: i2c: virtio: fix completion handling
kernel: i2c: virtio: fix completion handling
In the Linux kernel, the following vulnerability has been resolved:
i2c: virtio: fix completion handling
The driver currently assumes that the notify callback is only received
when the device is done with all the queued buffers.
However, this is not true, since the notify callback could be called
without any of the queued buffers being completed (for example, with
virtio-pci and shared interrupts) or with only some of the buffers being
completed (since the driver makes them available to the device in
multiple separate virtqueue_add_sgs() calls).
This can lead to incorrect data on the I2C bus or memory corruption in
the guest if the device operates on buffers which are have been freed by
the driver. (The WARN_ON in the driver is also triggered.)
Debian
CVE-2021-47613: linux - In the Linux kernel, the following vulnerability has been resolved: i2c: virtio...
vendor_debian·2021·CVSS 7.8
CVE-2021-47613 [HIGH] CVE-2021-47613: linux - In the Linux kernel, the following vulnerability has been resolved: i2c: virtio...
In the Linux kernel, the following vulnerability has been resolved: i2c: virtio: fix completion handling The driver currently assumes that the notify callback is only received when the device is done with all the queued buffers. However, this is not true, since the notify callback could be called without any of the queued buffers being completed (for example, with virtio-pci and shared interrupts) or with only some of the buffers being completed (since the driver makes them available to the device in multiple separate virtqueue_add_sgs() calls). This can lead to incorrect data on the I2C bus or memory corruption in the guest if the device operates on buffers which are have been freed by the driver. (The WARN_ON in the driver is also triggered.) BUG kmalloc-128 (Tainted: G W ): Poison overw
GHSA
GHSA-xpr2-p5g8-h7fq: In the Linux kernel, the following vulnerability has been resolved:
i2c: virtio: fix completion handling
The driver currently assumes that the notif
ghsa_unreviewed·2024-06-19
CVE-2021-47613 [HIGH] GHSA-xpr2-p5g8-h7fq: In the Linux kernel, the following vulnerability has been resolved:
i2c: virtio: fix completion handling
The driver currently assumes that the notif
In the Linux kernel, the following vulnerability has been resolved:
i2c: virtio: fix completion handling
The driver currently assumes that the notify callback is only received
when the device is done with all the queued buffers.
However, this is not true, since the notify callback could be called
without any of the queued buffers being completed (for example, with
virtio-pci and shared interrupts) or with only some of the buffers being
completed (since the driver makes them available to the device in
multiple separate virtqueue_add_sgs() calls).
This can lead to incorrect data on the I2C bus or memory corruption in
the guest if the device operates on buffers which are have been freed by
the driver. (The WARN_ON in the driver is also triggered.)
BUG kmalloc-128 (Tainted: G W ): Poison
OSV
CVE-2021-47613: In the Linux kernel, the following vulnerability has been resolved: i2c: virtio: fix completion handling The driver currently assumes that the notify
osv·2024-06-19·CVSS 7.8
CVE-2021-47613 [HIGH] CVE-2021-47613: In the Linux kernel, the following vulnerability has been resolved: i2c: virtio: fix completion handling The driver currently assumes that the notify
In the Linux kernel, the following vulnerability has been resolved: i2c: virtio: fix completion handling The driver currently assumes that the notify callback is only received when the device is done with all the queued buffers. However, this is not true, since the notify callback could be called without any of the queued buffers being completed (for example, with virtio-pci and shared interrupts) or with only some of the buffers being completed (since the driver makes them available to the device in multiple separate virtqueue_add_sgs() calls). This can lead to incorrect data on the I2C bus or memory corruption in the guest if the device operates on buffers which are have been freed by the driver. (The WARN_ON in the driver is also triggered.) BUG kmalloc-128 (Tainted: G W ): Poison overw
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-06-19
Published