Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

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 in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: BPF: Fixed an array bounds error with maygoto. Maygoto uses an additional 8 bytes on the stack, causing the interpreters array to go out of bounds when calculating the index using stacksize. 1. If a BPF program is rewritten,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Discard packets if the transport changes. If the socket has been de-assigned or assigned to another transport, we must discard any packets received because they are not expected and would cause issues when accessing...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: xfrm: delete intermediate secpath entry in packet offload mode Packets handled by hardware have added secpath as a way to inform XFRM core code that this path was already handled. That secpath is not needed at all after policy is...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

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: sched: schcake: bounds checks were added to the host bulk flow fairness counts. Although we fixed a logic error in the commit cited below, the syzbot still managed to cause an underflow in the per-host bulk flow counters, resulti...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: Tracking the changespktdata property for global functions When processing calls to certain helpers, the verifier invalidates all packet pointers in the current state. For example, consider the following program: c...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: copyverifierstate should copy the ‘loopentry’ field. The bpfverifierstate.loopentry state should be copied by copyverifierstate. Otherwise, values of .loopentry from unrelated states could corrupt env-curstate. Additionally,...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix deadlock when freeing cgroup storage The commit bc235cdb423a “bpf: Prevent deadlock from recursive bpftaskstorageget|delete” first introduced deadlock prevention for fentry/fexit programs attaching to bpftaskstorage...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ppp: Fixed the “KMSAN: uninit-value” warning with bpf. Syzbot detected a “KMSAN: uninit-value” warning 1. This issue arises because the ppp driver does not initialize a 2-byte header when using socket filter. The following code c...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

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 in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: In the net subsystem, the rxsk parameter was added to the tracekfreeskb argument array. However, rxsk is optional and can be NULL. Yan Zhai reported that a BPF program could trigger a NULL pointer derefrence if the program did no...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: netsched: schsfq: do not allow a packet limit of 1 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...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: mei: vsc: Fixed the issue caused by invalid use of countedby GCC 15 recognizes the countedbylen attribute in vsctppacket.buf, and the vsc-tp.c code uses this attribute incorrectly. len does not contain the available size in the...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: mctp i3c: handling of NULL header addresses daddr can be NULL if there is no neighbour table entry present; in that case, the TX packet should be discarded. saddr is usually set by the MCTP core, but NULL values are also...

Astra Linux – Vulnerability in Linux 6.1

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 6.1, Linux 6.12

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 in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Check the changespktdata property for extension programs. When processing calls to global sub-programs, the verifier decides whether to invalidate all packet pointers in the current state, depending on the changespktdata...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: Scrubbing packets on bpfredirectpeer When bpfredirectpeer is used to redirect packets to a device in another network namespace, the packets are not scrubbed. This can lead to information about the packets being “misused” in...

TencentOS Server 2: bind (TSSA-2023:0246)

The version of Tencent Linux installed on the remote TencentOS Server 2 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2023:0246 advisory. Package updates are available for TencentOS Server 2 that fix the following vulnerabilities:...