HUMINT in a cyber world

TL;DR HUMINT / Human Intelligence is gathered from a person in the location in question. It’s the sort of information we think of in the context of spying. A modern intelligence apparatus is multi-discipline with many different collection methods. HUMINT sources include officers, agents, diplomat...

kernel: tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc

In the Linux kernel, the following vulnerability has been resolved: tty: ttybuffer: Fix the softlockup issue in flushtoldisc When running ltp testcaseltp/testcases/kernel/pty/pty04.c with arm64, there is a soft lockup, which look like this one: Workqueue: eventsunbound flushtoldisc Call trace:...

DEBIAN-CVE-2023-52880

In the Linux kernel, the following vulnerability has been resolved: tty: ngsm: require CAPNETADMIN to attach NGSM0710 ldisc Any unprivileged user can attach NGSM0710 ldisc, but it requires CAPNETADMIN to create a GSM network anyway. Require initial namespace CAPNETADMIN to do that...

UBUNTU-CVE-2023-52880

In the Linux kernel, the following vulnerability has been resolved: tty: ngsm: require CAPNETADMIN to attach NGSM0710 ldisc Any unprivileged user can attach NGSM0710 ldisc, but it requires CAPNETADMIN to create a GSM network anyway. Require initial namespace CAPNETADMIN to do that...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the function fqpiedestroy not copying working code from pie destroy and other qdisc...

SUSE CVE-2021-47243

In the Linux kernel, the following vulnerability has been resolved: schcake: Fix out of bounds when parsing TCP options and header The TCP option parser in cake qdisc cakegettcpopt and caketcphmaydrop could read one byte out of bounds. When the length is 1, the execution flow gets into the loop,...

DEBIAN-CVE-2021-47382

In the Linux kernel, the following vulnerability has been resolved: s390/qeth: fix deadlock during failing recovery Commit 0b9902c1fcc5 "s390/qeth: fix deadlock during recovery" removed taking disciplinemutex inside qethdoreset, fixing potential deadlocks. An error path was missed though, that...

UBUNTU-CVE-2024-35892

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix lockdep splat in qdisctreereducebacklog qdisctreereducebacklog is called with the qdisc lock held, not RTNL. We must use qdisclookuprcu instead of qdisclookup syzbot reported: WARNING: suspicious RCU usage...

CVE-2024-27054

A vulnerability was found in the dasdgenericsetonline function in the Linux Kernel's s390 dasd.c driver, where improper reference count handling on error paths can lead to the refcount value being decreased twice, resulting in an incorrect underflow. This issue can lead to system instability...

kernel: GSM multiplexing race condition leads to privilege escalation

A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOCSETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsmdlci while restarting th...

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: Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcildisc,serdev: check percpuinitrwsem failure syzbot is reporting NULL pointer dereference at hciuartttyclose 1, for rcusyncenter is called without rcusyncinit due to hciuartttyopen ignoring percpuinitrwsem failure...

kernel: GSM multiplexing race condition leads to privilege escalation

A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOCSETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsmdlci while restarting th...

UBUNTU-CVE-2024-26669

In the Linux kernel, the following vulnerability has been resolved: net/sched: flower: Fix chain template offload When a qdisc is deleted from a net device the stack instructs the underlying driver to remove its flow offload callback from the associated filter block using the 'FLOWBLOCKUNBIND'...

CVE-2021-47176

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: add missing discipline function Fix crash with illegal operation exception in dasddevicetasklet. Commit b72949328869 "s390/dasd: Prepare for additional path event handling" renamed the verifypath function for ECKD but...

CVE-2021-47176 s390/dasd: add missing discipline function

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: add missing discipline function Fix crash with illegal operation exception in dasddevicetasklet. Commit b72949328869 "s390/dasd: Prepare for additional path event handling" renamed the verifypath function for ECKD but...

CVE-2021-47176

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: add missing discipline function Fix crash with illegal operation exception in dasddevicetasklet. Commit b72949328869 "s390/dasd: Prepare for additional path event handling" renamed the verifypath function for ECKD but...

CVE-2021-47176 s390/dasd: add missing discipline function

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: add missing discipline function Fix crash with illegal operation exception in dasddevicetasklet. Commit b72949328869 "s390/dasd: Prepare for additional path event handling" renamed the verifypath function for ECKD but...

CVE-2021-47176

CVE-2021-47176 affects the Linux kernel s390/dasd subsystem. The issue arises from an omitted discipline function, leading to a panic when the path verification function is invoked for FBA or DIAG devices. A fix defines a wrapper for dasd_generic_verify_path() to restore correct operation and pre...

CVE-2021-47176

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: add missing discipline function Fix crash with illegal operation exception in dasddevicetasklet. Commit b72949328869 "s390/dasd: Prepare for additional path event handling" renamed the verifypath function for ECKD but...