Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: TCP: added accessors to read/set tp-sndcwnd. Over the years, we’ve had various bugs in the code that broke the assumption that tp-sndcwnd is greater than zero. Recently, syzbot reported that the condition WARNONONCE!tp-priorcwnd...

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

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: Set skstate back to CLOSED if autobind fails in sctplistenstart. In sctplistenstart called by sctpinetlisten, it should set skstate back to CLOSED if sctpautobind fails for any reason. Otherwise, the next time...

Astra Linux – Vulnerability in libdata-validate-ip-perl

The Data::Validate::IP module in Perl version 0.29 does not properly handle extra zero characters at the beginning of an IP address string. In some cases, this allows attackers to bypass access controls that are based on IP addresses...

Astra Linux – Vulnerability in Linux, Linux 5.10

A guest can force the Linux netback driver to consume a large amount of kernel memory. This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVEs. Incoming data packets for a guest in the Linux kernel’s netback driver are buffere...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix lockdep splat in in6dumpaddrs As reported by syzbot, we should not use rcudereference when rcureadlock is not held. WARNING: suspicious RCU usage 5.19.0-rc2-syzkaller 0 Not tainted net/ipv6/addrconf.c:5175 suspicious...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net: nfc: nci: Added parameter validation for packet data. Syzbot reported a bug involving uninitialized values in nciinitreq. This bug was introduced through the commit 5aca7966d2a7 “Merge tag...

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

In the Linux kernel, the following vulnerability has been resolved: net: added vlangetprotocolanddepth helper. Previously, skbmaypull was used instead of skbheaderpointer in vlangetprotocol and related functions. Few calls relied on skb-head being populated with the MAC header. syzbot detected on...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: scsi: pm8001: A use-after-free issue was addressed for aborted SSP/STP sastask operations. Currently, a use-after-free may occur if an sastask is aborted by the upper layer before we handle the I/O completion in mpisspcompletion ...

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: can: j1939: j1939sessionnew: fix skb reference counting Since j1939sessionskbqueue performs an additional skbget operation for each new skb, doing the same operation for the initial skb in j1939sessionnew will prevent refcount...

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

A issue was discovered in the Linux kernel through version 6.0.10. In the l2capconfigreq function within net/bluetooth/l2capcore.c, there is an integer wraparound occurring when processing L2CAPCONFREQ packets...

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

In the Linux kernel, the following vulnerability has been resolved: In the net subsystem, hsr: rejecting HSR frames if skb cannot hold the tag. Receiving an HSR frame with insufficient space to hold the HSR tag in the skb can result in a crash kernel BUG. 45.390915 skbuff: skbunderpanic:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ax25: rcu protect dev-ax25ptr syzbot identified a lockdep issue 1. We should remove the ax25 RTNL dependency in ax25setsockopt. This should also fix various potential UAF issues in ax25. 1 WARNING: A circular locking dependenc...

Astra Linux – Vulnerability in Wireshark

In Wireshark versions up to 3.2.7, the Facebook Zero Protocol also known as FBZERO dissector could enter an infinite loop. This issue was addressed in the epan/dissectors/packet-fbzero.c file by correcting the implementation of offset advancement...

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

In the Linux kernel, the following vulnerabilities have been resolved: llc: A test for maclen should be performed before reading the MAC header. The LLC layer reads the MAC header using ethhdr, without verifying that the skb contains an Ethernet header. Syzbot was able to access the llcrcv functi...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: sock: The protection check for psock vs. ULP needs to be reimplemented. Commit 8a59f9d1e3d4 “sock: Introduce sk-skprot-psockupdateskprot” has moved the inetcskhasulpsk check from skpsockinit to the new tcpbpfupdateproto function....

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

In the Linux kernel, the following vulnerabilities have been resolved: SCTP: Initialization of additional fields in sctpv6fromsk was incorrect, leading to undefined behavior. SYZbot discovered that sin6scopeid was not properly initialized, causing undefined behavior. sin6scopeid and sin6flowinfo...

Astra Linux – Vulnerability in freerdp3, freerdp2

FreeRDP is a free implementation of the Remote Desktop Protocol. The ainputsendinputevent function caches the channelcallback in a local variable and then uses it without synchronization. A concurrent closure of a channel can free or reinitialize the callback, resulting in an use-after-free...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: gtp: Fixed the list corruption issue in gtpnetexitbatchrtnl. Brad Spengler reported the listdel corruption issue in gtpnetexitbatchrtnl. 0 The commit eb28fd76c0a0 “gtp: Destroy the device along with the udp socket’s netns...

Astra Linux – Vulnerability in net-snmp

Net-SNMP provides various tools related to the Simple Network Management Protocol. Prior to version 5.9.2, a buffer overflow in the handling of the INDEX in NET-SNMP-VACM-MIB could lead to an out-of-bounds memory access. A user with read-only credentials could exploit this issue. Version 5.9.2...

Astra Linux – Vulnerability in NTP

The praecisparse function in ntpd/refclockpalisade.c, within NTP 4.2.8p15, contains an out-of-bounds write vulnerability. Any attack method would be complex, for example, using a manipulated GPS receiver...