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

In the Linux kernel, the following vulnerability has been resolved: net: added more sanity checks to qdiscpktleninit. One of the approaches handles SKBGSODODGY, assuming that skb-len is greater than hdrlen. The function virtionethdrtoskb does not fully dissect TCP headers; it only ensures that th...

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: - net: hsr: Avoid potential out-of-bound access in fillframeinfo. syzbot can inject a packet with 14 bytes, pretending it is a VLAN packet. Since fillframeinfo already relies on skb-maclen, extend the check to cover this case....

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: netsched: schsfq: do not allow a 1 packet limit The current implementation does not work correctly with a limit of 1 packet. iproute2 actually checks for this, and this patch adds this check as well in the kernel. This fix resolv...

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

In the Linux kernel, the following vulnerability has been resolved: bpf: Send signals asynchronously if !preemptible BPF programs can execute in various contexts. When a program running in a non-preemptible context uses the bpfsendsignal function, issues may arise because this function can enter ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: A “off-by-one” error occurred in buildprologue. Vincent reported that running BPF programs with tail calls on LoongArch causes a kernel hard lockup. Debugging these issues revealed that the JIT-compiled code misse...

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: Added BHB mitigation to the epilogue for cBPF programs. A malicious BPF program may manipulate the branch history to influence what the hardware speculates will happen next. Upon exiting a cBPF program, the BHB...

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: netsched: schsfq: Fixed a potential crash during handling of gsoskb. SFQ assumes that it is always able to queue at least one packet. However, after the committed change, sch-q.len can be inflated by packets in sch-gsoskb. An...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed the KASAN use-after-free Read issue in computeeffectiveprogs. Syzbot identified a use-after-free bug in computeeffectiveprogs. The reproducer creates a number of BPF links, causing a failure in the injected allocation...

Astra Linux – Vulnerability in Linux 5.10, Linux

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 stated in 2, is that the...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: etases58x: It is necessary to populate ndochangemtu to prevent buffer overflows. Sending a PFPACKET allows bypassing the CAN framework logic and directly reaching the xmit function of a CAN driver. The only check performed by the...

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: bpf: Reject unhashed sockets in bpfskassign The semantics for bpfskassign are as follows: c sk = somelookupfunc bpfskassignskb, sk bpfskreleasesk That is, the sk is not consumed by bpfskassign. Therefore, the function must ensure...

Astra Linux – Vulnerability in Linux

The 802.11 standard that underpins Wi-Fi Protected Access WPA, WPA2, and WPA3 and Wired Equivalent Privacy WEP does not require that received fragments be cleared from memory after reconnecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted usin...

Astra Linux – Vulnerability in OpenLDAP

A flaw was discovered in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAP’s slapd server, thereby triggering an assertion failure. The greatest threat of this vulnerability is to system availability...

Astra Linux – Vulnerability in Wireshark

In Wireshark versions 3.2.0 to 3.2.1, 3.0.0 to 3.0.8, and 2.6.0 to 2.6.14, the LTE RRC dissector could leak memory. This issue was addressed in the epan/dissectors/packet-lte-rrc.c file by adjusting certain append operations...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftct: Skip the evaluation of rules for confirmed conntrack entries. The nftctexpectobjeval function calls nfctextadd for confirmed conntrack entries. However, nfctextadd can only be called when !nfctisconfirmed is...

Astra Linux – Vulnerability in libpcap

The sf-pcapng.c file in libpcap before version 1.9.1 does not properly validate the PHB header length before allocating memory...

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, 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 Wireshark

A NULL pointer exception occurs in the IEEE 802.11 dissector in Wireshark versions 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17, allowing for denial of service through packet injection or with crafted capture files...