CVE-2024-36882 mm: use memalloc_nofs_save() in page_cache_ra_order()

In the Linux kernel, the following vulnerability has been resolved: mm: use memallocnofssave in pagecacheraorder See commit f2c817bed58d "mm: use memallocnofssave in readahead path", ensure that pagecacheraorder do not attempt to reclaim file-backed pages too, or it leads to a deadlock, found iss...

Medium: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: x86/alternatives: Disable KASAN in applyalternatives CVE-2023-52504 A null pointer dereference flaw was found in the hugetlbfsfillsuper function in the Linux kernel hugetlbfs HugeTLB pages functionality. This issu...

CVE-2024-36882: Improper Locking

In the Linux kernel, the following vulnerability has been resolved: mm: use memallocnofssave in pagecacheraorder See commit f2c817bed58d "mm: use memallocnofssave in readahead path", ensure that pagecacheraorder do not attempt to reclaim file-backed pages too, or it leads to a deadlock, found iss...

Medium: kernel

Issue Overview: The Linux kernel before 5.4.2 mishandles ext4expandextraisize, as demonstrated by use-after-free errors in ext4expandextraisize and ext4xattrsetentry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163. CVE-2019-19767 Affected Packages: kernel Note: This advisory...

Ubuntu 22.04 LTS : Linux kernel (Intel IoTG) vulnerabilities (USN-6795-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6795-1 advisory. Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use-...

SUSE CVE-2021-47406

In the Linux kernel, the following vulnerability has been resolved: ext4: add error checking to ext4extreplaysetiblocks If the call to ext4mapblocks fails due to an corrupted file system, ext4extreplaysetiblocks can get stuck in an infinite loop. This could be reproduced by running generic/526 wi...

SUSE CVE-2021-47342

In the Linux kernel, the following vulnerability has been resolved: ext4: fix possible UAF when remounting r/o a mmp-protected file system After commit 618f003199c6 "ext4: fix memory leak in ext4fillsuper", after the file system is remounted read-only, there is a race where the kmmpd thread can...

USN-6777-4 linux-aws-hwe vulnerabilities

Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service system crash. CVE-2023-47233 Several...

USN-6777-4: Linux kernel (HWE) vulnerabilities

Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use- after-free vulnerability. A physically proximate attacker could possibly use this to cause a denial of service system crash. CVE-2023-47233 Several...

CVE-2023-52786

In the Linux kernel, the following vulnerability has been resolved: ext4: fix racy may inline data check in dio write syzbot reports that the following warning from ext4iomapbegin triggers as of the commit referenced below: if WARNONONCEext4hasinlinedatainode return -ERANGE; This occurs during a...

SUSE CVE-2023-52786

In the Linux kernel, the following vulnerability has been resolved: ext4: fix racy may inline data check in dio write syzbot reports that the following warning from ext4iomapbegin triggers as of the commit referenced below: if WARNONONCEext4hasinlinedatainode return -ERANGE; This occurs during a...

Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-6777-4)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6777-4 advisory. Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use-...

CVE-2021-47342

In the Linux kernel, the following vulnerability has been resolved: ext4: fix possible UAF when remounting r/o a mmp-protected file system After commit 618f003199c6 "ext4: fix memory leak in ext4fillsuper", after the file system is remounted read-only, there is a race where the kmmpd thread can...

kernel: ext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline

In the Linux kernel, the following vulnerability has been resolved: ext4: fix delayed allocation bug in ext4clumapped for bigalloc + inline When converting files with inline data to extents, delayed allocations made on a file system created with both the bigalloc and inline options can result in...

kernel: ext4: fix uninititialized value in 'ext4_evict_inode'

An uninitialized variable flaw was found in the Linux kernel's ext4 filesystem in the inode eviction path. A local user can trigger this issue by creating filesystem operations that cause inode allocation to fail before the iflags field is initialized, followed by inode cleanup that attempts to...

kernel: ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode

In the Linux kernel, the following vulnerability has been resolved: ext4: add EXT4IGETBAD flag to prevent unexpected bad inode There are many places that will get unhappy and crash when ext4iget returns a bad inode. However, if iget the boot loader inode, allows a bad inode to be returned, becaus...

kernel: ext4: Fix function prototype mismatch for ext4_feat_ktype

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix function prototype mismatch for ext4featktype With clang's kernel control flow integrity kCFI, CONFIGCFICLANG, indirect call targets are validated against the expected function pointer prototype to make sure the call...

kernel: ext4: init quota for 'old.inode' in 'ext4_rename'

In the Linux kernel, the following vulnerability has been resolved: ext4: init quota for 'old.inode' in 'ext4rename' Syzbot found the following issue: ext4parseparam: swantextraisize=128 ext4inodeinfoinit: swantextraisize=32 ext4rename: old.inode=ffff88823869a2c8 old.dir=ffff888238699828...

kernel: ext4: fix undefined behavior in bit shift for ext4_check_flag_values

A vulnerability was identified in the Linux kernel's ext4 filesystem implementation due to a flaw in how it processes filesystem metadata. An attacker with local privileges could create a malicious ext4 filesystem image to trigger this issue. When the system attempts to mount this malicious image...

kernel: ext4: fix task hung in ext4_xattr_delete_inode

In the Linux kernel, the following vulnerability has been resolved: ext4: fix task hung in ext4xattrdeleteinode Syzbot reported a hung task problem: ================================================================== INFO: task syz-executor232:5073 blocked for more than 143 seconds. Not tainted...