Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: lib/fonts: Fixed undefined behavior in bit shifting for getdefaultfont. Shifting a signed 32-bit value by 31 bits is undefined; therefore, the significant bit was changed to unsigned. The UBSAN warning appears as follows: UBSA...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010856)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010856 advisory. In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-006930)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006930 advisory. In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by...

SUSE CVE-2022-50511

In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds i...

CVE-2022-50511

In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds i...

UBUNTU-CVE-2022-50511

In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds i...

CVE-2022-50511

In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds i...

CVE-2022-50511

CVE-2022-50511 : In the Linux kernel, the vulnerability is fixed in the fonts code path. Specifically, the issue arises from shifting a signed 32-bit value by 31 bits in get_default_font within lib/fonts, which is undefined behavior. The patch converts the operation to an unsigned branch to avoid...

EUVD-2025-32848

In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds i...

kernel: lib/fonts: fix undefined behavior in bit shift for get_default_font

In the Linux kernel, the following vulnerability has been resolved: lib/fonts: fix undefined behavior in bit shift for getdefaultfont Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds i...

PT-2023-34294

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.15.86 Description The issue concerns undefined behavior in a bit shift operation within the get default font function in lib/fonts. This problem was introduced in version v2.6.23 and is fixed in version...

PT-2025-41016

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains an issue within the lib/fonts module related to undefined behavior in a bit shift operation within the get default font function. Specifically, shifting a signe...