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: vsock/vmci: Properly clear the vmci transport packet when initializing it. In vmcitransportpacketinit, memset is used to clear the vmcitransportpacket before populating the fields, to avoid any uninitialized data remaining in the...

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

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: The function tcpbpfsendverdict fails to allocate psock-cork when called, and skmsgfree must be called instead. The issue was reported by syzbot as follows: 0 The reproduction of the issue involves the following steps: 1...

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

In the Linux kernel, the following vulnerability has been resolved: ppp: Rejects packets that are claimed to be LCP packets but are actually malformed packets. Since pppasyncencode assumes that the packets are valid LCP packets with codes from 1 to 7 inclusive, add pppcheckpacket to ensure that t...

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

In the Linux kernel, the following vulnerability has been resolved: Packet: Annotate data-races around ignoreoutgoing The function ignoreoutgoing is accessed without a lock from devqueuexmitnit and packetgetsockopt. Add appropriate READONCE/WRITEONCE annotations. Syzbot reported: BUG: KCSAN:...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: gve: Added a missing NULL check for gveallocpendingpacket in TX DQO. gveallocpendingpacket may return NULL, but gvetxaddskbdqo did not check for this case before dereferencing the returned pointer. A missing NULL check was add...

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

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed the memory leak in bpfskselectreuseport As pointed out in the original comment, a lookup in sockmap can return a TCP ESTABLISHED socket. Such a TCP socket may have had SOATTACHREUSEPORTEBPF set before it became...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf: Do not redirect packets with invalid pktlen Syzbot identified an issue 1: the fqcodel Drop function attempts to drop a flow without any SKBs, that is, when flow-head is null. The root cause, as described in 2, is that the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Check skb-transportheader is set in bpfskbcheckmtu. The bpfskbcheckmtu helper needs to use skb-transportheader when the BPFMTUCHKSEGS flag is used: bpfskbcheckmtuskb, ifindex, &mtulen, 0, BPFMTUCHKSEGS. The transportheader i...

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

In the Linux kernel, the following vulnerability has been resolved: net: usb: smsc95xx: Limit packet length to skb-len The packet length retrieved from the descriptor may be larger than the actual socket buffer length. In such cases, the cloned skb passed up the network stack may leak kernel memo...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fixed the issue where the memory of skmsg was charged twice. If tcpbpfsendmsg is running during a cleanup operation, psock may be freed. c tcpbpfsendmsg tcpbpfsendverdict skmsgreturn tcpbpfsendmsgredir unlikely!psoc...

Astra Linux – Vulnerability in Chromium

Before version 91.0.4472.77, using free after in WebRTC in Google Chrome allowed a remote attacker to potentially exploit heap corruption through a crafted SCTP packet...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed incorrect reg type conversion in releasereference Some helper functions will allocate memory. To avoid memory leaks, the verifier requires the eBPF program to release this memory by calling the corresponding helper...

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: The mcbausb driver lacks the implementation of netdeviceops-ndochangemtu, which prevents buffer overflows. Sending a PFPACKET message allows bypassing the CAN driver’s logic and directly reaching the xmit function. The only check...

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 Qemu

QEMU 5.0.0 has a use-after-free issue in the hw/usb/hcd-xhci.c file, as the return value of usbpacketmap is not checked...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: RDMA/hfi1: Fixed potential integer multiplication overflow errors. When multiplying values of different types, an overflow can occur even when storing the result in a larger type. This happens because the conversion is perform...

Astra Linux – Vulnerability in Wireshark

A crash in the DNP dissector in Wireshark versions 3.4.0 to 3.4.6, as well as 3.2.0 to 3.2.14, allows for denial of service through packet injection or malicious capture files...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: mana: Validates the packet length reported by the Network Interface Card NIC. The packet length reported in the RX Command Queue Element CQE is validated before being passed to skb processing. The CQE is provided by the NIC...

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: arm64: bpf: Mitigation is only applied to cBPF programs loaded by unprivileged users. Support for eBPF programs loaded by unprivileged users is typically disabled. This means that only cBPF programs need to be mitigated for BHB...

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: ALSA: usb-mixer: us16x08: validate meter packet indices The getmeterlevelsfromurb function parses the 64-byte meter packets sent by the device and fills the per-channel arrays meterlevel, complevel, and masterlevel in the struct...