Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed issues where data was not being charged when msg-sg.size contained more data. In tcpbpfsendverdict: If msg-sg.size contains more data after tcpbpfsendmsgredir: c tcpbpfsendverdict tosend = msg-sg.size...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: In the bpf function, the task with pid=1 can be skipped in the sendsignalcommon function. The following kernel panic can occur when a task with pid=1 attempts to send a killing signal to itself. For more details, see 1. Kernel...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: bpf, testrun: Fixed an alignment issue in bpfprogtestrunskb. We encountered a syzkaller issue due to an alignment fault for aarch64 architectures when KFENCE is enabled. When the size provided by the user’s bpf program is an o...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Input: raydiumtsi2c – fixed a memory leak in raydiumi2csend A kmemleak occurs when testing raydiumi2cts using the bpf mock device: Unreferenced object 0xffff88812d3675a0 size 8: Comm “python3”, PID 349, Jiffies 4294741067 Age...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed a memory leak in tcpbpfsendmsg when skmsg is full. If tcpbpfsendmsg is running while skmsg is full, and skmsgalloc returns an -ENOMEM error, tcpbpfsendmsg will enter a waitformemory state. If part of the...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: LSM: General protection fault in legacyparseparam The usual LSM hook mechanism of “bailing on failure” doesn’t work in cases where a security module returns an error code indicating that it doesn’t recognize an input. In this...

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 described in 2, is that the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Check for any of tcpbpfprots when cloning a listener. A listening socket linked to a sockmap has its skprot overridden. It points to one of the struct proto variants in tcpbpfprots. This variant depends on the...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed pointer-leak due to insufficient speculative store bypass mitigation To mitigate Spectre v4, the patch 2039f26f3aca “bpf: Fixed leakage due to insufficient speculative store bypass mitigation” includes instructions...

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

A deadlock flaw was discovered in the Linux kernel’s BPF subsystem. This flaw allows a local user to potentially crash the system...

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

In the Linux kernel, the following vulnerability has been resolved: bpf: Detecting IP == ksym.end as part of the BPF program Now, since bpfthrow is the first call instruction with noreturn semantics within the verifier, this also leads to the elimination of dead code in unprecedented ways. For...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: BPF: Fixed the re-attachment branch in bpftracingprogattach. The following scenario can cause a crash due to a missing attachbtf: 1 Load the rawtp program. 2 Load the fentry program with rawtp as targetfd. 3 Create a tracing...

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: samples/bpf: Buffer overflow has been fixed in tcpbasertt. Using sizeofnv or strlennv+1 is correct...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fixed repeated calls to sockput when msg has moredata In the tcpbpfsendverdict redirection, the eval variable is assigned to SKREDIRECT after the applybytes data is sent. If msg has moredata, sockput will be called...

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

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Address the issue reported by KCSAN regarding bpflrulist. KCSAN reported a data-race when accessing node-ref. Although node-ref doesn’t need to be accurate, this opportunity can be used to use a more common READONCE and...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: BPF: Added schedule points in batch operations. SYZbot reported various soft lockups caused by BPF batch operations. INFO: Task kworker/1:1:27 was blocked for more than 140 seconds. INFO: Task hung during the rcubarrier...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: powerpc64/bpf: The instruction “ldbrx” is limited to processors that comply with ISA v2.06. Johan reported the following crash with the testbpf function on the ppc64 e5500 architecture: testbpf: 296 ALUENDFROMLE 64:...

Astra Linux – Vulnerability in Linux 5.10

A out-of-bounds memory read flaw was discovered in the Linux kernel’s BPF subsystem, related to how a user calls the bpftailcall function with a key that is larger than the maxentries of the map. This flaw allows a local user to gain unauthorized access to data...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: BPF: Do not use tnumrange for array range checking when dealing with poke descriptors. Hsin-Wei reported a KASAN issue triggered by their BPF runtime fuzzer, which is based on a custom syzkaller: - BUG: KASAN: Out-of-bounds...

Astra Linux – Vulnerability in Linux

The kernel/bpf/verifier.c file in the Linux kernel, as of version 5.12.1, performs undesirable speculative loads. This leads to the disclosure of stack contents through side-channel attacks, known as CID-801c6058d14a. The main issue is that the BPF stack area is not properly protected against...