kernel: cachefiles: defer exposing anon_fd until after copy_to_user() succeeds

A vulnerability was found in the Linux kernel's cachefiles component, regarding the handling of anonymous file descriptors. This issue occurs when an anonymous fd is exposed to userland before confirming the success of the copytouser operation, which can lead to a use-after-free condition...

btrfs: fix race setting file private on concurrent lseek using same fd

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DEBIAN-CVE-2024-50187

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Stop the active perfmon before being destroyed Upon closing the file descriptor, the active performance monitor is not stopped. Although all perfmons are destroyed in vc4perfmonclosefile, the active performance monitor's...

UBUNTU-CVE-2024-50187

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Stop the active perfmon before being destroyed Upon closing the file descriptor, the active performance monitor is not stopped. Although all perfmons are destroyed in vc4perfmonclosefile, the active performance monitor's...

CVE-2024-50187 drm/vc4: Stop the active perfmon before being destroyed

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Stop the active perfmon before being destroyed Upon closing the file descriptor, the active performance monitor is not stopped. Although all perfmons are destroyed in vc4perfmonclosefile, the active performance monitor's...

SUSE CVE-2024-49872

In the Linux kernel, the following vulnerability has been resolved: mm/gup: fix memfdpinfolios alloc race panic If memfdpinfolios tries to create a hugetlb page, but someone else already did, then folio gets the value -EEXIST here: folio = memfdallocfoliomemfd, startidx; if ISERRfolio ret =...

SUSE CVE-2024-49964

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix memfdpinfolios freehugepages leak memfdpinfolios followed by unpinfolios fails to restore freehugepages if the pages were not already faulted in, because the folio refcount for pages created by memfdallocfolio nev...

SUSE CVE-2024-47741

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race setting file private on concurrent lseek using same fd When doing concurrent lseek2 system calls against the same file descriptor, using multiple threads belonging to the same process, we have a short time window...

AZL-50853 CVE-2024-47741 affecting package kernel for versions less than 6.6.56.1-5

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race setting file private on concurrent lseek using same fd When doing concurrent lseek2 system calls against the same file descriptor, using multiple threads belonging to the same process, we have a short time window...

DEBIAN-CVE-2024-47741

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race setting file private on concurrent lseek using same fd When doing concurrent lseek2 system calls against the same file descriptor, using multiple threads belonging to the same process, we have a short time window...

UBUNTU-CVE-2024-47741

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race setting file private on concurrent lseek using same fd When doing concurrent lseek2 system calls against the same file descriptor, using multiple threads belonging to the same process, we have a short time window...

CVE-2024-47741

In CVE-2024-47741, the Linux kernel’s btrfs code had a race when multiple threads perform lseek (SEEK_DATA/SEEK_HOLE) on the same file descriptor. The bug stems from find_desired_extent() grabbing the file’s private_data while it may be NULL, allowing two threads to allocate separate file private...

kernel: protect the fetch of ->fd[fd] in do_dup2() from mispredictions

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of -fdfd in dodup2 from mispredictions both callers have verified that fd is not greater than -maxfds; however, misprediction might end up with tofree = fdt-fdfd; being speculatively executed. That's wrong for t...

SUSE CVE-2024-46734

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race between direct IO write and fsync when using same fd If we have 2 threads that are using the same file descriptor and one of them is doing direct IO writes while the other is doing fsync, we have a race where we c...

AZL-49566 CVE-2024-46762 affecting package kernel 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Fix possible access to a freed kirqfd instance Nothing prevents simultaneous ioctl calls to privcmdirqfdassign and privcmdirqfddeassign. If that happens, it is possible that a kirqfd created and added to the...

UBUNTU-CVE-2024-46734

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race between direct IO write and fsync when using same fd If we have 2 threads that are using the same file descriptor and one of them is doing direct IO writes while the other is doing fsync, we have a race where we c...

CVE-2024-46734

The CVE-2024-46734 entry concerns a race in the Linux kernel’s Btrfs when two threads share the same O_DIRECT file descriptor: one thread performs direct IO writes while the other calls fsync. According to the description, btrfs_direct_write() may set a stack-allocated private structure with fsyn...

CVE-2024-46734 btrfs: fix race between direct IO write and fsync when using same fd

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race between direct IO write and fsync when using same fd If we have 2 threads that are using the same file descriptor and one of them is doing direct IO writes while the other is doing fsync, we have a race where we c...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a contention between direct IO writes and fsync when the same fd is used...

CVE-2024-7734 Phoenix Contact: Multiple mGuard devices are vulnerable to a drain of open file descriptors.

An unauthenticated remote attacker can exploit the behavior of the pathfinder TCP encapsulation service by establishing a high number of TCP connections to the pathfinder TCP encapsulation service. The impact is limited to blocking of valid IPsec VPN peers...