Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix disconnect vs accept race Despite the commit 0ad529d9fd2b “mptcp: fix possible divide by zero in recvmsg”, the mptcp protocol is still prone to a race between disconnect or shutdown and accept. The root cause is that t...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: nbd: Fixed NULL pointer in flushworkqueue Open /dev/nbdX first; the configrefs will be 1, and the pointers in nbddevice will still be null. Disconnect /dev/nbdX, then reference a null recvworkq. The protection provided by...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: usbnet: Fixed the use-of-memory issue after disconnect. usbnet uses the usbnetdeferredkevent function to perform tasks that may sleep. When a device disconnects, the completion of these tasks was originally expected in -ndostop...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Wifi: ath9k: Fixed a use-after-free in ath9khifusbdisconnect This patch fixes a use-after-free that occurs in ath9khifusbdisconnect, when ath9khifusbdisconnect attempts to access “drvpriv”, which has already been freed by...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: In hcievent, there is a callback for call disconnect that is called before the connection is deleted. In hcicsdisconnect, we call hciconndel even if the disconnection fails. ISO, L2CAP, and SCO connections refer to...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: fix NULL dereferencing on disconnection Commit 9d7b18668956 “HID: magicmouse: add support for Apple Magic Trackpad 2” added a sanity check for an Apple trackpad. If the check fails, it returns success instead of...

Astra Linux – Vulnerability in xwayland, xorg-server

A flaw was discovered in the X.Org X server’s X Keyboard Xkb extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, resulting in a use-after-free condition. This can cause memory corruption or a crash when affected...

Astra Linux – Vulnerabilities in Linux-6.1, Linux-5.15

In the Linux kernel, the following vulnerability has been resolved: USB: Gadget: fncm: Fixed UAF Use-After-Free in the ncm object after re-binding after a USB EP transport error When the ncm function is working, the usb0 interface is stopped due to a link failure. In this case, the ethstop functi...

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: Media: pvrusb2: Fix for a UAF in pvr2contextsetnotify Reported by Syzbot Bug: KASAN: “Slab-use-after-free” in pvr2contextsetnotify+0x2c4/0x310; file: drivers/media/usb/pvrusb2/pvrusb2-context.c, line 35. A 4-byte read at address...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: Input: powermate – fixed a use-after-free in powermateconfigComplete. Syzbot has identified a use-after-free bug 1 in the powermate driver. This occurs when the device is disconnected, causing memory data related to the...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: fixed a race condition issue under cocurrent smb2 tree disconnect. There is also a UAF issue under cocurrent smb2 tree disconnect. This patch introduces TREECONNEXPIRE flags for tcon to avoid cocurrent access...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15

A use-after-free flaw was discovered in r592remove in drivers/memstick/host/r592.c, responsible for media access in the Linux kernel. This flaw allows a local attacker to crash the system upon device disconnection, potentially leading to a kernel information leak...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: nbd: Fixed an issue where the process got hung during disconnection of a device. In our tests, “qemu-nbd” triggered a hung process: INFO: Task “qemu-nbd”: 11445 is blocked for more than 368 seconds. Not tainted...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: Wifi: brcmfmac – Fixed a use-after-free bug in brcmfcfg80211detach. This is the candidate patch for CVE-2023-47233: https://nvd.nist.gov/vuln/detail/CVE-2023-47233 In the brcm80211 driver, the process starts with the following...

Astra Linux – Vulnerability in Linux 5.15

A issue was discovered in ksmbd within the Linux kernel versions 5.15 through 5.19, prior to 5.19.2. The file fs/ksmbd/smb2pdu.c contains a use-after-free condition and an OOPS error related to SMB2TREEDISCONNECT...

Astra Linux – Vulnerabilities in Linux, Linux-5.15, Linux-5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: fixed the “bad unlock balance” issue in l2capdisconnectrsp. The conn-chanlock is not acquired before l2capgetchanbyscid. If l2capgetchanbyscid returns NULL, then the “bad unlock balance” issue will be trigger...

Astra Linux – Vulnerability in libssh2

In libssh2 v1.9.0 and earlier versions, the SSHMSGDISCONNECT logic in packet.c has an integer overflow in a bounds check, allowing an attacker to specify an arbitrary out-of-bounds offset for a subsequent memory read. A malicious SSH server may be able to disclose sensitive information or cause a...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: Fixed an issue where shareconf was freed after use, in compound requests. smb2getksmbdtcon reuses work-tcon in compound requests without validating tcon-tstate. ksmbdtreeconnlookup checks that tstate is equal to...

Astra Linux – Vulnerability in Linux 5.15

A use-after-free flaw was discovered in lan78xxdisconnect in drivers/net/usb/lan78xx.c within the network sub-component, net/usb/lan78xx, in the Linux kernel. This flaw allows a local attacker to cause the system to crash when the LAN78XX USB device is disconnected...

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: ALSA: caiaq – Use sndcardfreewhenclosed when there is a USB disconnection. The callback for USB disconnection should be short and not too long. Alternatively, the current code uses sndcardfree when there is a disconnection, but...