CVE-2023-53450

In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUGON in ext4mbreleasegrouppa If a malicious fuzzer overwrites the ext4 superblock while it is mounted such that the sfirstdatablock is set to a very large number, the calculation of the block group can underflow,...

UBUNTU-CVE-2023-53450

In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUGON in ext4mbreleasegrouppa If a malicious fuzzer overwrites the ext4 superblock while it is mounted such that the sfirstdatablock is set to a very large number, the calculation of the block group can underflow,...

UBUNTU-CVE-2023-53503

In the Linux kernel, the following vulnerability has been resolved: ext4: allow ext4getgroupinfo to fail Previously, ext4getgroupinfo would treat an invalid group number as BUG, since in theory it should never happen. However, if a malicious attaker or fuzzer modifies the superblock via the block...

UBUNTU-CVE-2023-53482

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix error unwind in iommugroupalloc If either iommugroupgratefile fails then the iommugroup is leaked. Destroy it on these error paths. Found by kselftest/iommu/iommufdfailnth...

CVE-2023-53503

In the Linux kernel, the vulnerability CVE-2023-53503 affects ext4: ext4_get_group_info() could underflow when computing a block group if s_first_data_block is set to an extremely large value due to a malicious attacker with write access to the block device while the filesystem is mounted. This c...

CVE-2023-53503 ext4: allow ext4_get_group_info() to fail

In the Linux kernel, the following vulnerability has been resolved: ext4: allow ext4getgroupinfo to fail Previously, ext4getgroupinfo would treat an invalid group number as BUG, since in theory it should never happen. However, if a malicious attaker or fuzzer modifies the superblock via the block...

CVE-2023-53482

The CVE-2023-53482 is a Linux kernel vulnerability in iommu_group_alloc() where an error unwind path may leak iommu_group if iommu_group_grate_file() fails. The fix destroys the leaked iommu_group on those error paths. Affected component: kernel iommu/group allocation logic. Root cause: missing c...

CVE-2023-53482 iommu: Fix error unwind in iommu_group_alloc()

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix error unwind in iommugroupalloc If either iommugroupgratefile fails then the iommugroup is leaked. Destroy it on these error paths. Found by kselftest/iommu/iommufdfailnth...

CVE-2023-53482 iommu: Fix error unwind in iommu_group_alloc()

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix error unwind in iommugroupalloc If either iommugroupgratefile fails then the iommugroup is leaked. Destroy it on these error paths. Found by kselftest/iommu/iommufdfailnth...

CVE-2023-53450

The CVE-2023-53450 entry concerns the Linux kernel ext4 subsystem. A malicious fuzzer that overwrites the ext4 superblock while mounted can set s_first_data_block to a very large value, causing the block-group calculation to underflow and trigger a BUG_ON. The fix changes the BUG_ON to ext4_warni...

CVE-2023-53450 ext4: remove a BUG_ON in ext4_mb_release_group_pa()

In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUGON in ext4mbreleasegrouppa If a malicious fuzzer overwrites the ext4 superblock while it is mounted such that the sfirstdatablock is set to a very large number, the calculation of the block group can underflow,...

CVE-2023-53450 ext4: remove a BUG_ON in ext4_mb_release_group_pa()

In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUGON in ext4mbreleasegrouppa If a malicious fuzzer overwrites the ext4 superblock while it is mounted such that the sfirstdatablock is set to a very large number, the calculation of the block group can underflow,...

Operation Cronos and the Takedown of LockBit: A Cybersecurity Milestone

Running short on time but still want to stay in the know? Well, we’ve got you covered! We’ve condensed all the key takeaways into a handy audio summary. Introduction LockBit aka ABCD Ransomware, one of the most destructive ransomware groups in history, was dismantled in early 2024 through a...

PT-2025-40189

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel related to IOMMU group allocation. Specifically, if iommu group grate file fails, the IOMMU group is leaked. The issue is addressed by ensuring the IOMM...

PT-2025-40157

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel’s ext4 implementation. A malicious fuzzer could potentially overwrite the ext4 superblock while mounted, setting the s first data block to a large numbe...

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 mishandling of the iommugroupalloc function error, which could lead to a resource leak...

PT-2025-40210

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw within the ext4 filesystem implementation. Specifically, the ext4 get group info function previously triggered a kernel BUG when encountering an invalid...

📄 Fiora Chat 1.0.0 Cross Site Scripting

Fiora Chat version 1.0.0 suffers from a cross site scripting vulnerability. CVE-2025-56514: Cross Site Scripting XSS Vulnerability in Fiora Chat Application Overview A Cross Site Scripting XSS vulnerability, identified as CVE-2025-56514, affects the Fiora chat application version 1.0.0. This...

PT-2025-40100

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel’s genetlink functionality where the genl bind function could invoke a bind callback even after permission checks failed, potentially allowing callbacks ...

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 Linux kernel that stems from a possible integer underflow in block group calculations, which could cause the kernel to crash...