Linux kernel security vulnerabilities

The Linux kernel is the kernel used by the Linux Foundation's open source operating system Linux. A security vulnerability exists in the Linux kernel that stems from allowing a call to dmaentryalloccheckleak under freeentrieslock...

CVE-2023-52582: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: netfs: Only call foliostartfscache one time for each folio If a network filesystem using netfs implements a clamplength function, it can set subrequest lengths smaller than a page size. When we loop through the folios in...

CVE-2021-46983

A flaw was found in an error-handling function in the Linux kernel's NVMe driver. This flaw allows an attacker with control over NVMe links to cause a denial of service. Mitigation Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a...

CVE-2021-46961

A flaw was found in the Linux kernel. Enabled irqs when handling spurious interrups may affect the availability...

CVE-2021-46982

In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: fix race condition of overwrite vs truncate posfsstress testcase complains a panic as belew: ------------ cut here ------------ kernel BUG at fs/f2fs/compress.c:1082! invalid opcode: 0000 1 SMP PTI CPU: 4 PID:...

Race condition

In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: fix race condition of overwrite vs truncate posfsstress testcase complains a panic as belew: ------------ cut here ------------ kernel BUG at fs/f2fs/compress.c:1082! invalid opcode: 0000 1 SMP PTI CPU: 4 PID:...

CVE-2021-47007

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix panic during f2fsresizefs f2fsresizefs hangs in below callstack with testcase: - mkfs 16GB image & mount image - dd 8GB fileA - dd 8GB fileB - sync - rm fileA - sync - resize filesystem to 8GB kernel BUG at...

CVE-2021-46982

CVE-2021-46982 relates to the Linux kernel’s f2fs compress path. A race between truncate and overwrite can leave a reference on a page, causing find_lock_page to return NULL after truncation. Root cause involves prepare_compress_overwrite, f2fs_pagecache_get_page, and subsequent truncate_setsize/...

UBUNTU-CVE-2021-46957

In the Linux kernel, the following vulnerability has been resolved: riscv/kprobe: fix kernel panic when invoking sysread traced by kprobe The execution of sysread end up hitting a BUGON in findgetblock after installing kprobe at sysread, the BUG message like the following: 65.708663 ------------...

CVE-2021-46961

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3: Do not enable irqs when handling spurious interrups We triggered the following error while running our 4.19 kernel with the pseudo-NMI patches backported to it: 14.816231 ------------ cut here ------------ 14.8162...

DEBIAN-CVE-2021-46931

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Wrap the tx reporter dump callback to extract the sq Function mlx5etxreporterdumpsq casts its void argument to struct mlx5etxqsq , but in TX-timeout-recovery flow the argument is actually of type struct mlx5etxtimeoutc...

CVE-2021-46961: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3: Do not enable irqs when handling spurious interrups We triggered the following error while running our 4.19 kernel with the pseudo-NMI patches backported to it: 14.816231 ------------ cut here ------------ 14.8162...

CVE-2024-26595 mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrumacltcam: Fix NULL pointer dereference in error path When calling mlxswspacltcamregiondestroy from an error path after failing to attach the region to an ACL group, we hit a NULL pointer dereference upon...

DEBIAN-CVE-2023-52451

In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries/memhp: Fix access beyond end of drmem array dlparmemoryremovebyindex may access beyond the bounds of the drmem lmb array when the LMB lookup fails to match an entry with the given DRC index. When the search fails,...

UBUNTU-CVE-2024-26590

In the Linux kernel, the following vulnerability has been resolved: erofs: fix inconsistent per-file compression format EROFS can select compression algorithms on a per-file basis, and each per-file compression algorithm needs to be marked in the on-disk superblock for initialization. However,...

OESA-2024-1033 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: openeuler-linux-kernel-5.10.149-ext4writeinlinedata-kernelbug-365020CVE-2021-33631 An issue was discovered in the Linux kernel through 6.3.8. A use-after-free was found in ravbremove in...

OESA-2024-1034 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: openeuler-linux-kernel-5.10.149-ext4writeinlinedata-kernelbug-365020CVE-2021-33631 An issue was discovered in the Linux kernel through 6.3.8. A use-after-free was found in ravbremove in...

kernel: use after free in nvmet_tcp_free_crypto in NVMe

A use-after-free vulnerability was found in drivers/nvme/target/tcp.c in nvmettcpfreecrypto due to a logical bug in the NVMe/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, which may permit remote code execution or lead t...

kernel: dm cache: free background tracker's queued work in btracker_destroy

A memory leak was found in the device-mapper cache target in the Linux kernel. The btrackerdestroy function fails to free queued work items from the background tracker before destroying the slab cache. This triggers a BUG when kmemcacheshutdown finds objects still remaining...

kernel: drm/i915: Fix memory leaks in i915 selftests

A memory leak flaw was found in the Linux kernel's Intel i915 graphics driver in the selftest page allocation logic. A local user can trigger this issue when running i915 selftests and the fakegetpages function encounters errors, causing the function to return without freeing previously allocated...