CVE-2022-50394
published 2025-09-18CVE-2022-50394: In the Linux kernel, the following vulnerability has been resolved: i2c: ismt: Fix an out-of-bounds bug in ismt_access() When the driver does not check the…
PriorityP431high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.15%
4.9th percentile
In the Linux kernel, the following vulnerability has been resolved:
i2c: ismt: Fix an out-of-bounds bug in ismt_access()
When the driver does not check the data from the user, the variable
'data->block[0]' may be very large to cause an out-of-bounds bug.
The following log can reveal it:
[ 33.995542] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffcb3dc3a20
[ 33.995978] ismt_smbus 0000:00:05.0: I2C_SMBUS_BLOCK_DATA: WRITE
[ 33.996475] ==================================================================
[ 33.996995] BUG: KASAN: out-of-bounds in ismt_access.cold+0x374/0x214b
[ 33.997473] Read of size 18446744073709551615 at addr ffff88810efcfdb1 by task ismt_poc/485
[ 33.999450] Call Trace:
[ 34.001849] memcpy+0x20/0x60
[ 34.002077] ismt_access.cold+0x374/0x214b
[ 34.003382] __i2c_smbus_xfer+0x44f/0xfb0
[ 34.004007] i2c_smbus_xfer+0x10a/0x390
[ 34.004291] i2cdev_ioctl_smbus+0x2c8/0x710
[ 34.005196] i2cdev_ioctl+0x5ec/0x74c
Fix this bug by checking the size of 'data->block[0]' first.
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.4-1 (bookworm) | linux 6.1.4-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < 4a7bb1d93addb2f67e36fed00a53cb7f270d7b7a | 4a7bb1d93addb2f67e36fed00a53cb7f270d7b7a |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < 03b7ef7a6c5ca1ff553470166b4919db88b810f6 | 03b7ef7a6c5ca1ff553470166b4919db88b810f6 |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < bfe41d966c860a8ad4c735639d616da270c92735 | bfe41d966c860a8ad4c735639d616da270c92735 |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < cdcbae2c5003747ddfd14e29db9c1d5d7e7c44dd | cdcbae2c5003747ddfd14e29db9c1d5d7e7c44dd |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < 9ac541a0898e8ec187a3fa7024b9701cffae6bf2 | 9ac541a0898e8ec187a3fa7024b9701cffae6bf2 |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < 96c12fd0ec74641295e1c3c34dea3dce1b6c3422 | 96c12fd0ec74641295e1c3c34dea3dce1b6c3422 |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < a642469d464b2780a25a49b51ae56623c65eac34 | a642469d464b2780a25a49b51ae56623c65eac34 |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < 233348a04becf133283f0076e20b317302de21d9 | 233348a04becf133283f0076e20b317302de21d9 |
| linux | linux | >= 13f35ac14cd0a9a1c4f0034c4c40d0ae98844ce9 < 39244cc754829bf707dccd12e2ce37510f5b1f8d | 39244cc754829bf707dccd12e2ce37510f5b1f8d |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.4-1 | 6.1.4-1 |
| linux | linux_kernel | >= 0 < 6.1.4-1 | 6.1.4-1 |
| linux | linux_kernel | >= 0 < 6.1.4-1 | 6.1.4-1 |
| linux | linux_kernel | >= 3.9 < 4.9.337 | 4.9.337 |
| linux | linux_kernel | >= 4.10 < 4.14.303 | 4.14.303 |
| linux | linux_kernel | >= 4.15 < 4.19.270 | 4.19.270 |
| linux | linux_kernel | >= 4.20 < 5.4.229 | 5.4.229 |
| linux | linux_kernel | >= 5.11 < 5.15.86 | 5.15.86 |
| linux | linux_kernel | >= 5.16 < 6.0.16 | 6.0.16 |
| linux | linux_kernel | >= 5.5 < 5.10.163 | 5.10.163 |
| linux | linux_kernel | >= 6.1 < 6.1.2 | 6.1.2 |
CVSS provenance
nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv7.1HIGH
vendor_debian7.1HIGH
vendor_redhat7.1HIGH
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OSV
CVE-2022-50394: In the Linux kernel, the following vulnerability has been resolved: i2c: ismt: Fix an out-of-bounds bug in ismt_access() When the driver does not chec
osv·2025-09-18·CVSS 7.1
CVE-2022-50394 [HIGH] CVE-2022-50394: In the Linux kernel, the following vulnerability has been resolved: i2c: ismt: Fix an out-of-bounds bug in ismt_access() When the driver does not chec
In the Linux kernel, the following vulnerability has been resolved: i2c: ismt: Fix an out-of-bounds bug in ismt_access() When the driver does not check the data from the user, the variable 'data->block[0]' may be very large to cause an out-of-bounds bug. The following log can reveal it: [ 33.995542] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffcb3dc3a20 [ 33.995978] ismt_smbus 0000:00:05.0: I2C_SMBUS_BLOCK_DATA: WRITE [ 33.996475] ================================================================== [ 33.996995] BUG: KASAN: out-of-bounds in ismt_access.cold+0x374/0x214b [ 33.997473] Read of size 18446744073709551615 at addr ffff88810efcfdb1 by task ismt_poc/485 [ 33.999450] Call Trace: [ 34.001849] memcpy+0x20/0x60 [ 34.002077] ismt_access.cold+0x374/0x214b [ 34.003382] __i2c_smbus_xfer+0x44f/0xfb0
GHSA
GHSA-2wfh-xv6f-6623: In the Linux kernel, the following vulnerability has been resolved:
i2c: ismt: Fix an out-of-bounds bug in ismt_access()
When the driver does not ch
ghsa_unreviewed·2025-09-18
CVE-2022-50394 [HIGH] CWE-125 GHSA-2wfh-xv6f-6623: In the Linux kernel, the following vulnerability has been resolved:
i2c: ismt: Fix an out-of-bounds bug in ismt_access()
When the driver does not ch
In the Linux kernel, the following vulnerability has been resolved:
i2c: ismt: Fix an out-of-bounds bug in ismt_access()
When the driver does not check the data from the user, the variable
'data->block[0]' may be very large to cause an out-of-bounds bug.
The following log can reveal it:
[ 33.995542] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffcb3dc3a20
[ 33.995978] ismt_smbus 0000:00:05.0: I2C_SMBUS_BLOCK_DATA: WRITE
[ 33.996475] ==================================================================
[ 33.996995] BUG: KASAN: out-of-bounds in ismt_access.cold+0x374/0x214b
[ 33.997473] Read of size 18446744073709551615 at addr ffff88810efcfdb1 by task ismt_poc/485
[ 33.999450] Call Trace:
[ 34.001849] memcpy+0x20/0x60
[ 34.002077] ismt_access.cold+0x374/0x214b
[ 34.003382] __i2c_smbus_xfer+0x44f/0x
Red Hat
kernel: i2c: ismt: Fix an out-of-bounds bug in ismt_access()
vendor_redhat·2025-09-18·CVSS 7.1
CVE-2022-50394 [HIGH] CWE-787 kernel: i2c: ismt: Fix an out-of-bounds bug in ismt_access()
kernel: i2c: ismt: Fix an out-of-bounds bug in ismt_access()
In the Linux kernel, the following vulnerability has been resolved:
i2c: ismt: Fix an out-of-bounds bug in ismt_access()
When the driver does not check the data from the user, the variable
'data->block[0]' may be very large to cause an out-of-bounds bug.
The following log can reveal it:
[ 33.995542] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffcb3dc3a20
[ 33.995978] ismt_smbus 0000:00:05.0: I2C_SMBUS_BLOCK_DATA: WRITE
[ 33.996475] ==================================================================
[ 33.996995] BUG: KASAN: out-of-bounds in ismt_access.cold+0x374/0x214b
[ 33.997473] Read of size 18446744073709551615 at addr ffff88810efcfdb1 by task ismt_poc/485
[ 33.999450] Call Trace:
[ 34.001849] memcpy+0x20/0x60
[ 34.002077] ismt_acces
Debian
CVE-2022-50394: linux - In the Linux kernel, the following vulnerability has been resolved: i2c: ismt: ...
vendor_debian·2022·CVSS 7.1
CVE-2022-50394 [HIGH] CVE-2022-50394: linux - In the Linux kernel, the following vulnerability has been resolved: i2c: ismt: ...
In the Linux kernel, the following vulnerability has been resolved: i2c: ismt: Fix an out-of-bounds bug in ismt_access() When the driver does not check the data from the user, the variable 'data->block[0]' may be very large to cause an out-of-bounds bug. The following log can reveal it: [ 33.995542] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffcb3dc3a20 [ 33.995978] ismt_smbus 0000:00:05.0: I2C_SMBUS_BLOCK_DATA: WRITE [ 33.996475] ================================================================== [ 33.996995] BUG: KASAN: out-of-bounds in ismt_access.cold+0x374/0x214b [ 33.997473] Read of size 18446744073709551615 at addr ffff88810efcfdb1 by task ismt_poc/485 [ 33.999450] Call Trace: [ 34.001849] memcpy+0x20/0x60 [ 34.002077] ismt_access.cold+0x374/0x214b [ 34.003382] __i2c_smbus_xfer+0x44f/0xfb0
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/03b7ef7a6c5ca1ff553470166b4919db88b810f6https://git.kernel.org/stable/c/233348a04becf133283f0076e20b317302de21d9https://git.kernel.org/stable/c/39244cc754829bf707dccd12e2ce37510f5b1f8dhttps://git.kernel.org/stable/c/4a7bb1d93addb2f67e36fed00a53cb7f270d7b7ahttps://git.kernel.org/stable/c/96c12fd0ec74641295e1c3c34dea3dce1b6c3422https://git.kernel.org/stable/c/9ac541a0898e8ec187a3fa7024b9701cffae6bf2https://git.kernel.org/stable/c/a642469d464b2780a25a49b51ae56623c65eac34https://git.kernel.org/stable/c/bfe41d966c860a8ad4c735639d616da270c92735https://git.kernel.org/stable/c/cdcbae2c5003747ddfd14e29db9c1d5d7e7c44dd
2025-09-18
Published