Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: BPF: Setting the run context for the rawtp testrun callback. The syzbot reported a crash when the rawtp program was executed through the testrun interface, calling the bpfgetattachcookie helper or any other helper that accesses t...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf,perf: Fixed an invalid progarray access in perfeventdetachbpfprog Syzbot reported a crash that occurs in the following tracing scenario: - Create a tracepoint with attr.inherit=1, attach it to the process, and set the BPF...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: BPF: Properly handles malformed BPFCORETYPEIDLOCAL relocation records. In the case of malformed relocation records of the BPFCORETYPEIDLOCAL type that reference a non-existent BTF type, the function bpfcorecalcreloinsn may cause ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net, sunrpc: Remapping EPERM in case of connection failure in xstcpsetupsocket. When using a BPF program on kernelconnect, the call may return -EPERM. This causes xstcpsetupsocket to loop indefinitely, filling up the syslog and...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: synclinked regs must preserve subregdef Range propagation must not affect subregdef marks. Otherwise, the following example is rewritten incorrectly by the verifier when the BPFFTESTRNDHI32 flag is set: 0: call bpfktimegetns...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix helper functions that write to read-only maps Lonial identified an issue where, even when the BPF map on both the user and BPF sides is frozen like in the case of .rodata, it was still possible to write into it from the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed UAF by correcting mismatching of bpfprog/attachment RCU flavors. Uprobes always use bpfprogrunarrayuprobe under tasks-trace-RCU protection. However, it is possible to attach a non-sleepable BPF program to a probe...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Check the validity of link-type in bpflinkshowfdinfo If a newly added link type does not invoke BPFLINKTYPE, accessing bpflinktypestrslink-type may lead to an out-of-bounds access. To detect such missed invocations early on ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Ensure that the internal and UAPI bpfredirect flags do not overlap. The bpfredirectinfo is shared between the SKB and XDP redirection paths. Both paths use the same numerical flag values in the ri-flags field specifically,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: skmsg: Skip zero length skb in skmsgrecvmsg When running BPF selftests ./testprogs -t sockmapbasic on a Loongarch platform, the following kernel panic occurs: ... Oops1: CPU: 22 PID: 2824 Comm: testprogs Tainted: G OE 6.10.0-rc2+...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Zero the value of ARGPTRTOLONG,INT in cases of errors. For all non-tracing helpers that previously had ARGPTRTOLONG,INT as input arguments, the value is set to zero in cases of errors. This prevents a potential memory leak...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Consider the return from setmemoryro when using bpfproglockro setmemoryro may fail, leaving memory unprotected. Consider this return value as an error...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: The return value of tcpbpfsendmsg was corrected. When we use the cork mechanism in psock-cork, the last message triggers flushing, resulting in sending a skmsg that is larger than the current message size. In this case, i...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: BPF: Using rawspinlockt in ringbuf. The function bpfringbufreserve is invoked from a tracepoint, which disables preemption. Using spinlockt in this context can lead to a “sleep in atomic” warning in the RT variant. This issue is...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: Fixed the skmemuncharge logic in tcpbpfsendmsg. The current sk memory accounting logic in SKREDIRECT involves pre-charging bytes to be sent, where the value is either msg-sg.size or a smaller value, applybytes. Potential...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix OOB devmap writes when deleting elements Jordy reported an issue with XSKMAP, which also affects DEVMAP. Due to XSKMAP being a signed integer, OOB writes occur. The fix is simple—change the type from int to u32. However,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: tcp/dccp: Do not use timerPending in reqskQueueUnlink. Martin KaFai Lau reported a use-after-free in reqskTimerHandler. We are encountering a use-after-free related to a bpf program attached to traceTCPRetransmitSynack. The...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: BPF: Fixed a segmentation issue when upgrading gsosize. The skb was linearized during the upgrade of gsosize, as this might trigger a BUGON function later on, as described in 1,2...

Azure Linux 3.0 Security Update: kernel (CVE-2024-41009)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-41009 advisory. - In the Linux kernel, the following vulnerability has been resolved: bpf: Fix overrunning reservations in...

Azure Linux 3.0 Security Update: kernel (CVE-2024-42246)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-42246 advisory. - In the Linux kernel, the following vulnerability has been resolved: net, sunrpc: Remap EPERM in case of...