{"id":"DEBIAN-CVE-2022-50394","details":"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-\u003eblock[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-\u003eblock[0]' first.","modified":"2026-09-01T20:04:59.529762448Z","published":"2025-09-18T14:15:38.490Z","upstream":["CVE-2022-50394"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-50394"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50394.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50394.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50394.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}]}