Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A flaw was discovered in the Linux kernel’s networking code. A use-after-free occurred in the way the schsfb enqueue function utilized the socket buffer SKB cb field after the same SKB had been enqueued and freed into a child qdisc. This flaw allows a local, unprivileged user to cause a system...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A vulnerability has been discovered in the Linux kernel. It has been classified as problematic. The affected function is nilfsnew inode in the file fs/nilfs2/inode.c of the BPF component. This vulnerability allows for manipulation after the memory allocation function free is called. The attack ca...

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

In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: A UAF vulnerability has been fixed in classes where netem is a child qdisc. As described in Gerrard’s report 1, there is a UAF case when an hfsc class has a netem child qdisc. The core issue is that hfsc assumes...

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

A use-after-free vulnerability was discovered in the siano smsusb module within the Linux kernel. The bug occurs during device initialization, when the siano device is plugged in. This flaw allows a local user to crash the system, resulting in a denial-of-service condition...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: can: peakusb: fix use after free bugs After calling peakusbnetifrxniskb, dereferencing skb is unsafe. In particular, the canframe function, which aliases skb memory, is accessed after peakusbnetifrxni. Reordering the lines of cod...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: perf: Fix for perfpendingtask UaF According to syzbot, it is possible for perfpendingtask to continue running after the event has been freed. There are two related but distinct cases: - The taskwork was already queued before the...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: drm/shmem-helper: Removed the erroneous “put” operation in the error path. The drmgemshmemmmap function does not handle this reference properly, resulting in the GEM object being freed prematurely, leading to a “use-after-free...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nfsd: calls oprelease, even when opfunc returns an error. For operations with “trivial” responses, nfsd4encodeoperation will shortcut most of the encoding process and simply proceed to marshaling the status. One of the things it...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: dmaengine: idxd: Fixed a double-free in idxdsetupwqs The cleanup in idxdsetupwqs contained a few bugs, as the error handling was somewhat subtle. It’s simpler to rewrite the code in a more clean way. The issues are as follows:...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ACPICA: The error code path in acpidscallcontrolmethod has been fixed. A use-after-free occurs in acpipsParseAML after a failed invocation of acpidscallcontrolmethod. This issue was reported by KASAN1. Code inspection reveals tha...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: android:binder: Stop saving a pointer to the VMA. Do not record a pointer to a VMA outside of the mmaplock for later use. This is unsafe, and there are several failure scenarios where the recorded VMA pointer might be freed durin...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: mmc: vub300 – Fixed the return value check in mmcaddhost. If we ignore the return value of mmcaddhost, the memory allocated in mmcallochost may be leaked, leading to a kernel crash due to the removal of devices that were not...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: s390: fixed the issue where double-free of GS and RI CBs occurs during fork failures. The pointers for guarded storage and runtime instrumentation control blocks are stored in the threadstruct of the associated task. These...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A use-after-free vulnerability was discovered in the Linux kernel’s ext4 file system, particularly regarding the handling of the additional inode size for extended attributes. This flaw could allow a privileged local user to cause a system crash or other undefined behaviors...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A use-after-free flaw was discovered in vhostnetsetbackend in drivers/vhost/net.c within the virtio network subcomponent of the Linux kernel, due to a double fget operation. This flaw could allow a local attacker to cause the system to crash, and could even lead to a kernel information leak issue...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: scsi: smartpqi: Fixed the issue where device resources were accessed after the device was removed. This corrected potential race conditions during device removal. Previously, a scheduled task to reset a LUN could still execute...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: f2fs: fixed to avoid a use-after-free in f2fsstopgcthread. syzbot reports a f2fs bug as follows: dumpstack, lib/dumpstack.c:88 inline dumpstacklvl+0x241/0x360, lib/dumpstack.c:114 printreport+0xe8/0x550, mm/kasan/report.c:491...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/sched: Only allow actct to bind to clsact/ingress qdiscs and shared blocks. As Paolo mentioned earlier 1: “Since the problematic commit below, classify can return TCACTCONSUMED while holding the current skb that is managed by...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: hns3 – Fixed the double-free issue with the tx spare buffer. In the function hns3setringparam, a temporary copy of the ring structure tmprings is created for rollback purposes. However, the txspare pointer in the original ri...

Astra Linux – Vulnerability in Firefox, Thunderbird

Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5...