EUVD-2026-64415

In the Linux kernel, the following vulnerability has been resolved: xfs: handle NULL baddr in xfsbuffree When xfsbufallocbackingmem fails, xfsbuffree is called with bp-baddr still NULL. The code falls through to the folioput path which calls virttofolioNULL, dereferencing an invalid address and...

CVE-2026-74728

CVE-2026-74728 is a NULL pointer dereference in the Linux kernel's XFS filesystem repair tooling. When xfs_buf_alloc_backing_mem() fails, xfs_buf_free() is called with bp->b_addr still NULL. The code then falls through to the folio_put path, which calls virt_to_folio(NULL), dereferencing an in...

CVE-2026-74728 xfs: handle NULL b_addr in xfs_buf_free

In the Linux kernel, the following vulnerability has been resolved: xfs: handle NULL baddr in xfsbuffree When xfsbufallocbackingmem fails, xfsbuffree is called with bp-baddr still NULL. The code falls through to the folioput path which calls virttofolioNULL, dereferencing an invalid address and...

PT-2026-79733

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the XFS file system where the xfs buf free function fails to properly handle a NULL b addr value. When the xfs buf alloc backing mem function fails, xfs buf free is...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099724)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099724 advisory. In the Linux kernel, the following vulnerability has been resolved: xfs: save ailp before dropping the AIL lock in push callbacks In xfsinodeitempush and...

Linux kernel Btree Heap Buffer Overflow DoS

The vulnerability of the xchkbtreecheckblockowner function in the fs/xfs/scrub/btree.c file of the Linux kernel operating system is related to the race condition that occurs when a shared resource is used. Exploiting this vulnerability could allow an attacker to compromise the confidentiality,...

Linux XFS DoS

The vulnerability of the fs/xfs/libxfs/xfsattrleaf.c component in the Linux operating system is related to a countable amount of value loss. Exploiting this vulnerability could allow an attacker to cause service failures remotely...

Linux XFS DoS

The vulnerability of the fs/xfs/libxfs/xfsattrleaf.c component in the Linux operating system is related to buffer overflow attacks. Exploiting this vulnerability could allow an attacker to cause a service failure remotely...

CVE-2026-64256

A flaw was found in the Linux kernel's XFS filesystem. This vulnerability occurs in the dqiterate function, where an unsigned 32-bit quota identifier qid can wrap around to zero if it reaches its maximum value. This integer overflow can cause the iteration of quota IDs to restart, potentially...

kernel: XFS data corruption using reflink

A flaw was found in the XFS filesystem. A race condition in the copy-on-write mechanism for reflinked files can cause writes to bypass the copy-on-write process and modify shared data blocks directly. As a result, data intended for a private copy may be written to the original shared location,...

kernel: XFS data corruption using reflink

A flaw was found in the XFS filesystem. A race condition in the copy-on-write mechanism for reflinked files can cause writes to bypass the copy-on-write process and modify shared data blocks directly. As a result, data intended for a private copy may be written to the original shared location,...

kernel: XFS data corruption using reflink

A flaw was found in the XFS filesystem. A race condition in the copy-on-write mechanism for reflinked files can cause writes to bypass the copy-on-write process and modify shared data blocks directly. As a result, data intended for a private copy may be written to the original shared location,...

kernel: XFS data corruption using reflink

A flaw was found in the XFS filesystem. A race condition in the copy-on-write mechanism for reflinked files can cause writes to bypass the copy-on-write process and modify shared data blocks directly. As a result, data intended for a private copy may be written to the original shared location,...

CVE-2026-64356

A flaw was found in the Linux kernel's XFS filesystem. This vulnerability occurs during the creation of XFS metadata directories, where a failure in the creation process or a subsequent commit can lead to a memory leak. This leak results in allocated update and transaction state not being properl...

Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2026-112 (ALASKERNEL-5.15-2026-112)

The version of kernel installed on the remote host is prior to 5.15.211-149.251. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2026-112 advisory. In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized...

SUSE CVE-2026-64357

In the Linux kernel, the following vulnerability has been resolved: xfs: fix exchmaps reservation limit check xfsexchmapsestimateoverhead adds the bmbt and rmapbt overhead to a local resblks variable, but the final UINTMAX check still tests req-resblks. That is the reservation value from before t...

Nine-Year-Old RefluXFS Linux Flaw Gives Local Users Root on Default RHEL Installs

RefluXFS, a Linux kernel flaw disclosed on July 22 and tracked as CVE-2026-64600, lets an unprivileged local user overwrite root-owned files on an XFS filesystem and gain persistent root access. Qualys said default installations of Red Hat Enterprise Linux and its derivatives, Fedora Server, and...

CVE-2026-64600

In the Linux kernel, the following vulnerability has been resolved: xfs: resample the data fork mapping after cycling ILOCK xfsreflinkfillcowhole,delalloc are both presented with an inode, a data fork mapping, and a cow fork mapping. Unfortunately, these two helpers cycle the ILOCK to grab a...

EUVD-2026-47879

In the Linux kernel, the following vulnerability has been resolved: xfs: resample the data fork mapping after cycling ILOCK xfsreflinkfillcowhole,delalloc are both presented with an inode, a data fork mapping, and a cow fork mapping. Unfortunately, these two helpers cycle the ILOCK to grab a...

kernel: XFS data corruption using reflink

A flaw was found in the XFS filesystem. A race condition in the copy-on-write mechanism for reflinked files can cause writes to bypass the copy-on-write process and modify shared data blocks directly. As a result, data intended for a private copy may be written to the original shared location,...