Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: BPF: Use VMMAP instead of VMALLOC for the ringbuf area. After the commit 2fd3fb0be1d1 “kasan, vmalloc: unpoison VMALLOC pages after mapping”, non-VMALLOC mappings will be marked as accessible in getvmareanode when KASAN is enable...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: sched/scs: The task stack state is reset in bringupcpu. When a CPU is hot-plugged, the idle task on that CPU calls several layers of C code before finally leaving the kernel. When KASAN is in use, a “poisoned” shadow is left behi...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: dm raid: fixed the KASAN warning in raid5adddisks. There is a KASAN warning in raid5adddisk when running the LVM testsuite. The warning occurs during the test lvconvert-raid-reshape-lineartoraid6-single-type.sh. We fixed this...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/msm/a6xx: Allocate sufficient space for GMU registers In commit 142639a52a01 “drm/msm/a6xx: fix crashstate capture for A650”, we changed a6xxgetgmuregisters to read 3 sets of registers. Unfortunately, we did not change the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblockfreelate instead of imafreekexecbuffer. The code that calls imafreekexecbuffer is executed long after the memblock allocator has already been removed. This could lead to a use-after-free in...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fixed an issue where stack out-of-bounds reading occurred when fragmenting IPv4 packets. When running openvswitch on kernels built with KASAN, it is possible to observe the following error during the testing of IPv4...

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

In the Linux kernel, the following vulnerability has been resolved: x86/alternatives: Disabling KASAN during applyalternatives Fei has reported that KASAN is triggered during applyalternatives on a 5-level paging machine: BUG: KASAN: Out-of-bounds access in rcuiswatching Reading of a 4-byte value...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't use tnumrange on array range checking for poke descriptors Hsin-Wei reported a KASAN splat triggered by their BPF runtime fuzzer which is based on a customized syzkaller: BUG: KASAN: slab-out-of-bounds in...

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

In the Linux kernel, the following vulnerability has been resolved: PCI: Endpoint – Fix for handling the configfs group list head The use of listdel on the epfgroup field of struct pciepfdriver in pciepfremovecfs is incorrect. This field is a list head, not a list entry. This listdel call trigger...

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

In the Linux kernel, the following vulnerability has been resolved: ftrace: Fixed invalid address access in lookuprec when the index is 0. KASAN reported the following issue: BUG: KASAN: use-after-free in lookuprec A read of size 8 at the address ffff000199270ff0 was performed by the task modprob...

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

In the Linux kernel, the following vulnerability has been resolved: x86: stopped the use of stack-based calculations in the profilepc function. The profilepc function is used for timer-based profiling, which isn’t really that relevant anymore. It also makes assumptions about the stack layout that...

Astra Linux – Vulnerability in wavpack

A null pointer dereference bug was found in wavpack-5.4.0. Results from the ASAN log: AddressSanitizer:DEADLYSIGNAL ===================================================================84257==ERROR: AddressSanitizer: SEGV at an unknown address 0x000000000000 pc 0x561b47a970c6, bp 0x7fff13952fb0, sp...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mm: krealloc: Fixed an MTE false alarm in dokrealloc. This patch addresses an issue introduced by commit 1a83a716ec233, which caused MTE Memory Tagging Extension to falsely report a slab-out-of-bounds error. The problem occurs wh...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: crypto: arm64/poly1305 – fixed a read out-of-bound issue. A KASAN error was reported during fuzzing: BUG: KASAN: slab-out-of-bounds in neonpoly1305blocks.constprop.0+0x1b4/0x250 poly1305neon Read of size 4 at addr...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: usb: mtu3: Fix for the listhead check warning caused by uninitialization of listhead. This issue is due to the lack of initialization of listhead. BUG: KASAN: Use-after-free in listdelentryvalid+0x34/0xe4. Call trace:...

Astra Linux – Vulnerabilities in Firefox, LibWebP, Thunderbird

There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode function and loop through to free the best.bw file, assigning the best pointer to trial. The second loop will then return 0 due to a memory out-of-memory error in the VP8 encoder; the pointer remai...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ASoC: lpass: Fix for KASAN use-after-free out of bounds. When we run syzkaller, we encounter an Out of Bounds error. “KASAN: slab-out-of-bounds Read in regcacheflatread.” The issue’s backtrace is as follows: BUG: KASAN:...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: clk: zynqmp: Fixed a stack-out-of-bounds issue in strncpy. “BUG: KASAN: Stack-out-of-bounds in strncpy+0x30/0x68” The Linux-ATF interface uses 16 bytes of SMC payload. If the clock name is longer than 15 bytes, the string...

libaom:av1_enc_fuzzer: Heap-buffer-overflow in av1_calc_mb_wiener_var_row

Detailed Report: https://oss-fuzz.com/testcase?key=6316915665207296 Project: libaom Fuzzing Engine: honggfuzz Fuzz Target: av1encfuzzer Job Type: honggfuzzasanlibaom Platform Id: linux Crash Type: Heap-buffer-overflow WRITE 2 Crash Address: 0x7802327e028a Crash State: av1calcmbwienervarrow...

libbpf:bpf-object-fuzzer: Heap-use-after-free in btf_ext_parse_sec_info

Project: https://github.com/libbpf/libbpf.git Detailed Report: https://oss-fuzz.com/testcase?key=4722152942403584 Project: libbpf Fuzzing Engine: libFuzzer Fuzz Target: bpf-object-fuzzer Job Type: libfuzzerasani386libbpf Platform Id: linux Crash Type: Heap-use-after-free READ 4 Crash Address:...