Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed an sdiv overflow issue Zac Ecob reported a problem where a bpf program might cause a kernel crash due to the following error: Oops: Divide error: 0000 1 PREEMPT SMP KASAN PTI The failure is caused by the following sign...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed reference state management for synchronous callbacks Currently, the verifier verifies callback functions both synchronous and asynchronous as if they would be executed only once. The next instruction to be explored ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed a panic that occurred due to an incorrect pageattr of im-image. In the scenario where livepatch and kretfunc coexist, the pageattr of im-image becomes rox after archpreparebpftrampoline in bpftrampolineupdate. Then, wh...

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: lwt: Fixed the return values of BPF xmit operations. The BPF encap operations can return different types of positive values, such as NETRXDROP, NETXMITCN, NETDEVTXBUSY, etc., from the functions skbdoredirect and...

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 in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed the exception exit lock checking for subprogs. The processbpfexitfull function passes checklock = !curframe to checkresourceleak, which results in a false negative when bpfthrow is called from a static subprog. This...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fix tailcallreachable rejection for interpreter when jit failed During testing of f263a81451c1 “bpf: Track subprog poke descriptors correctly and fix use-after-free” under various failure conditions, for example, when...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: HID: bpf: preventing buffer overflow in hidhwrequest. Currently, the returned value is considered to be always valid. However, when working with HID-BPF, the returned value can be arbitrarily large, because it is the returned val...

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 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 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: 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: 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 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

In the Linux kernel, the following vulnerability has been resolved: bpf: Makes bpfrefcountacquire failable for non-owning references This patch fixes an incorrect assumption made in the original bpfrefcount series 0. Specifically, it assumes that the BPF program calling bpfrefcountacquire on a...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Disabling trampoline for kernel module function tracing The current implementation of BPF trampoline in LoongArch is incompatible with tracing functions in kernel modules. This causes several serious and...

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

In the Linux kernel, the following vulnerabilities have been resolved: LoongArch: BPF: Properly handles return values from struct ops that are signed-extended. The nsbpfqdisc selftest triggers a kernel panic: Oops1: CPU 0 Unable to handle kernel paging request at virtual address 0000000000741d58,...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: BPF: Handling jset if a & b ... as a jump in CFG computation. BPFJSET is a conditional jump, and currently, verifier.c:canjump does not take this into account. This can lead to incorrect live registers and incorrect SCC Set of...

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...