CVE-2026-90335 tty: skip cdev_del() when no cdev is registered

In the Linux kernel, the following vulnerability has been resolved: tty: skip cdevdel when no cdev is registered TTY device registration can fail before a cdev is allocated. Serial core keeps the port so setserial can still use it, and later removal passes the NULL cdev slot to cdevdel, causing a...

EUVD-2026-81996

In the Linux kernel, the following vulnerability has been resolved: tty: skip cdevdel when no cdev is registered TTY device registration can fail before a cdev is allocated. Serial core keeps the port so setserial can still use it, and later removal passes the NULL cdev slot to cdevdel, causing a...

CVE-2026-90335 tty: skip cdev_del() when no cdev is registered

In the Linux kernel, the following vulnerability has been resolved: tty: skip cdevdel when no cdev is registered TTY device registration can fail before a cdev is allocated. Serial core keeps the port so setserial can still use it, and later removal passes the NULL cdev slot to cdevdel, causing a...

CVE-2026-90335

CVE-2026-90335 is a NULL-pointer dereference in the Linux kernel's TTY subsystem (serial core). When TTY device registration fails before a cdev is allocated, the serial core retains the port for use by setserial. On later removal, the NULL cdev slot is passed to cdev_del(), triggering the derefe...

CVE-2026-90334 tty: clear cdev pointer after cdev_add() failure

In the Linux kernel, the following vulnerability has been resolved: tty: clear cdev pointer after cdevadd failure ttycdevadd drops the cdev reference when cdevadd fails, but leaves driver-cdevsindex pointing to freed memory. ttyunregisterdevice later passes that stale pointer to cdevdel, causing ...

CVE-2026-90334

CVE-2026-90334 is a use-after-free vulnerability in the Linux kernel TTY subsystem. In tty_cdev_add() , when cdev_add() fails, the function drops the cdev reference but leaves driver->cdevs[index] pointing to freed memory. Later, tty_unregister_device() passes that stale pointer to cdev_del() ...

CVE-2026-90057 slip: remove slip_hangup() to fix use-after-free in slip_receive_buf()

In the Linux kernel, the following vulnerability has been resolved: slip: remove sliphangup to fix use-after-free in slipreceivebuf Jaeyoung Chung and Eulgyu Kim reported a slab-use-after-free read in slipreceivebuf when racing against tty hangup. ttyldischangup calls ld-ops-hangup while holding...

CVE-2026-90057 slip: remove slip_hangup() to fix use-after-free in slip_receive_buf()

In the Linux kernel, the following vulnerability has been resolved: slip: remove sliphangup to fix use-after-free in slipreceivebuf Jaeyoung Chung and Eulgyu Kim reported a slab-use-after-free read in slipreceivebuf when racing against tty hangup. ttyldischangup calls ld-ops-hangup while holding...

CVE-2026-90057

CVE-2026-90057 is a slab-use-after-free in the Linux kernel's SLIP line discipline . The root cause is a race between slip_hangup() and reader functions such as slip_receive_buf(): tty_ldisc_hangup() held only a read lock on tty->ldisc_sem, allowing slip_close() to run concurrently with reader...

EUVD-2026-81918

In the Linux kernel, the following vulnerability has been resolved: slip: remove sliphangup to fix use-after-free in slipreceivebuf Jaeyoung Chung and Eulgyu Kim reported a slab-use-after-free read in slipreceivebuf when racing against tty hangup. ttyldischangup calls ld-ops-hangup while holding...

CVE-2026-90335: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: tty: skip cdevdel when no cdev is registered TTY device registration can fail before a cdev is allocated. Serial core keeps the port so setserial can still use it, and later removal passes the NULL cdev slot to cdevdel, causing a...

CVE-2026-90334: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: tty: clear cdev pointer after cdevadd failure ttycdevadd drops the cdev reference when cdevadd fails, but leaves driver-cdevsindex pointing to freed memory. ttyunregisterdevice later passes that stale pointer to cdevdel, causing ...

PT-2026-94405

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A slab-use-after-free read occurs in the slip receive buf function during a race condition with tty hangup. The tty ldisc hangup function calls ld-ops-hangup while holding only a read lo...

CVE-2026-93050: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix UAF, null-ptr-deref, and use-after-free in cleanup on remove Three issues arise when the device is removed while a tty session is still active: 1. UAF of struct ipoctal: the remove callback frees ipoctal via...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tty: serial: samsungtty: Fixed a memory leak in s3c24xxSerialGetClk, when iterating clk. When searching for the best clk, we iterate over all possible values of clk. If we find a better match, the previously found value if any...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: usb: cdc-acm: Check the control transfer buffer size before accessing it. If the first fragment is shorter than struct usbcdcnotification, we cannot calculate the expectedsize. Instead, log an error and discard the notification...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: “Revert ‘tty: ngsm: fix UAF in gsmcleanupmux’” This reversion involves commit 9b9c8195f3f0d74a826077fc1c01b9ee74907239. The above commit was reverted because it did not solve the original issue. The function gsmcleanupmux attempt...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Staging: greybus: uart: fixed the issue where tty was used after it was freed. The user space can keep a tty open indefinitely, and tty drivers must not release the underlying structures until the last user has left. We have...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tty: fixed an out-of-bounds access in ttydriverlookuptty When an invalid console= device is specified, such as console=tty3270, ttydriverlookuptty returns the tty struct without checking whether the index is a valid number. To...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: serial: caif: holding the tty-link reference in ldiscopen and serrelease A reproducer triggers a KASAN slab-use-after-free in ptywriteroom when caifSerial’s TX path calls ttywriteroom. The faulty access occurs on tty-link-port. A...