kernel: tty: Fix out-of-bound vmalloc access in imageblit

A vulnerability was found in the Linux kernel's tty subsystem within the imageblit function when a userspace program performs an ioctl operation with the FBIOPUTVSCREENINFO command, passing a fbvarscreeninfo structure with limited fields. If the structure’s values remain unchanged from a previous...

kernel: tty: Fix out-of-bound vmalloc access in imageblit

A vulnerability was found in the Linux kernel's tty subsystem within the imageblit function when a userspace program performs an ioctl operation with the FBIOPUTVSCREENINFO command, passing a fbvarscreeninfo structure with limited fields. If the structure’s values remain unchanged from a previous...

kernel: tty: n_gsm: fix possible out-of-bounds in gsm0_receive()

A vulnerability was found in the Linux kernel's ngsm driver, affecting the tty subsystem. It occurs when switching between basic and advanced option modes in GSM multiplexing, leading to potential out-of-bounds memory writes. This happens because certain state variables, like gsm-len and gsm-stat...

kernel: tty: n_gsm: fix possible out-of-bounds in gsm0_receive()

A vulnerability was found in the Linux kernel's ngsm driver, affecting the tty subsystem. It occurs when switching between basic and advanced option modes in GSM multiplexing, leading to potential out-of-bounds memory writes. This happens because certain state variables, like gsm-len and gsm-stat...

CLSA-2024-1722512538 Fix of 10 CVEs

CVE-url: https://ubuntu.com/security/CVE-2024-25744 - x86/sev: Rename memencrypt.c to memencryptamd.c - x86: Introduce ia32enabled - x86/coco: Disable 32-bit emulation by default on TDX and SEV CVE-url: https://ubuntu.com/security/CVE-2024-36016 - tty: ngsm: fix frame reception handling - tty:...

kernel: tty: n_gsm: fix deadlock and link starvation in outgoing data path

In the Linux kernel, the following vulnerability has been resolved: tty: ngsm: fix deadlock and link starvation in outgoing data path The current implementation queues up new control and user packets as needed and processes this queue down to the ldisc in the same code path. That means that the...

kernel: possible race condition in drivers/tty/tty_buffers.c

An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem. The issue occurs in how a user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory in the flushtoldisc function. This flaw allows a local user to crash the...

NewStart CGSL MAIN 6.02 : kernel Multiple Vulnerabilities (NS-SA-2023-0061)

The remote NewStart CGSL host, running version MAIN 6.02, has kernel packages installed that are affected by multiple vulnerabilities: - A flaw was found in the Linux kernel's futex implementation. This flaw allows a local attacker to corrupt system memory or escalate their privileges when creati...

CLSA-2023-1695715460 kernel: Fix of 24 CVEs

xen/xenbus: don't let xenbusgrantring remove grants in error case CVE-2022-23040 - xen/xenbus: Fix granting of vmalloc'd memory - xen/blkfront: don't use gnttabqueryforeignaccess for mapped status CVE-2022-23036 - xen/grant-table: add gnttabtryendforeignaccess CVE-2022-23036 - xen/blkfront: don't...

CVE-2020-8648 - use-after-free vulnerability

There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the nttyreceivebufcommon function in drivers/tty/ntty.c...

SUSE CVE-2020-29660

A locking inconsistency issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/ttyio.c and drivers/tty/ttyjobctrl.c may allow a read-after-free attack against TIOCGSID, aka CID-c8bcd9c5be24...

SUSE CVE-2020-29661

A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/ttyjobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b...

NewStart CGSL MAIN 6.02 : kernel Multiple Vulnerabilities (NS-SA-2022-0089)

The remote NewStart CGSL host, running version MAIN 6.02, has kernel packages installed that are affected by multiple vulnerabilities: - In the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4putsuper in...

SUSE-SU-2022:2720-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2022-36946: Fixed an incorrect packet trucation operation which could lead to denial of service bnc1201940. - CVE-2022-20166: Fixed several possible memory...

UBUNTU-CVE-2022-1462

An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem. The issue occurs in how a user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory in the flushtoldisc function. This flaw allows a local user to crash the...

The vulnerability of the tty subsystem in the Linux operating system allows a hacker to gain access to confidential information or cause service failures.

The vulnerability of the tty subsystem in the Linux operating system is related to the use of memory after it is freed. Exploiting this vulnerability can allow an attacker to access confidential information or cause service failures...

NewStart CGSL MAIN 6.02 : kernel Multiple Vulnerabilities (NS-SA-2022-0074)

The remote NewStart CGSL host, running version MAIN 6.02, has kernel packages installed that are affected by multiple vulnerabilities: - In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering u...

Amazon Linux 2 : kernel (ALASKERNEL-5.4-2022-019)

The version of kernel installed on the remote host is prior to 5.4.91-41.139. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2022-019 advisory. A flaw was found in the JFS filesystem code. This flaw allows a local attacker with the ability to set...

AlmaLinux 8 : kernel (ALSA-2021:0558)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2021:0558 advisory. - A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local attacker with permission to monitor...

LSN-0082-1 Kernel Live Patch Security Notice

Jann Horn discovered that the tty subsystem of the Linux kernel did not use consistent locking in some situations, leading to a read-after-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly expose sensitive information kernel...