CVE-2026-64600

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,...

RefluXFS: A Linux Kernel Local Privilege Escalation to Root in XFS (CVE-2026-64600)

Executive summary Qualys Threat Research Unit TRU identified CVE-2026-64600, a race condition in the Linux kernel’s XFS filesystem copy-on-write path. An attacker with an ordinary local account can exploit this race condition to overwrite protected files on disk and gain host root privileges on...

SUSE CVE-2026-63811

In the Linux kernel, the following vulnerability has been resolved: f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fswritebegin may read the previously written data back from the COW inode: prepareatomicwritebegin locates the block in the COW...

SUSE CVE-2026-63831

In the Linux kernel, the following vulnerability has been resolved: mac802154: llsec: add skbcowdata before in-place crypto llsecdoencryptunauth, llsecdoencryptauth, llsecdodecryptunauth, and llsecdodecryptauth all perform in-place cryptographic transformations on skb data. They build a scatterli...

CVE-2026-63994 tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]()

In the Linux kernel, the following vulnerability has been resolved: tunnels: load network headers after skbcow in iptunnelpmtudbuildicmpv6 Sashiko found that iptunnelpmtudbuildicmp and iptunnelpmtudbuildicmpv6 were caching iphdr and ipv6hdr before an skbcow call which can reallocate skb-head. Fix...

CVE-2026-63994

The CVE-2026-63994 issue affects the Linux kernel's tunnels code: iptunnel_pmtud_build_icmp(v6) and iptunnel_pmtud_build_icmp() cached ip_hdr()/ipv6_hdr() before skb_cow(), which could reallocate skb->head and cause use-after-free. The patch fixes this by initializing local variables after the...

CVE-2026-63831

In the Linux kernel, the following vulnerability has been resolved: mac802154: llsec: add skbcowdata before in-place crypto llsecdoencryptunauth, llsecdoencryptauth, llsecdodecryptunauth, and llsecdodecryptauth all perform in-place cryptographic transformations on skb data. They build a scatterli...

CVE-2026-63811

In the Linux kernel, the following vulnerability has been resolved: f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fswritebegin may read the previously written data back from the COW inode: prepareatomicwritebegin locates the block in the COW...

CVE-2026-63831 mac802154: llsec: add skb_cow_data() before in-place crypto

In the Linux kernel, the following vulnerability has been resolved: mac802154: llsec: add skbcowdata before in-place crypto llsecdoencryptunauth, llsecdoencryptauth, llsecdodecryptunauth, and llsecdodecryptauth all perform in-place cryptographic transformations on skb data. They build a scatterli...

CVE-2026-63811 f2fs: read COW data with the original inode during atomic write

In the Linux kernel, the following vulnerability has been resolved: f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fswritebegin may read the previously written data back from the COW inode: prepareatomicwritebegin locates the block in the COW...

CVE-2026-63811

In the Linux kernel, the following vulnerability has been resolved: f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fswritebegin may read the previously written data back from the COW inode: prepareatomicwritebegin locates the block in the COW...

Linux Distros Unpatched Vulnerability : CVE-2026-63811

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fswritebegin may read the previously written data back fr...

PT-2026-61127

In the Linux kernel, the following vulnerability has been resolved: f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fs write begin may read the previously written data back from the COW inode: prepare atomic write begin locates the block in th...

SUSE SLES15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:3089-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3089-1 advisory. The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues The following security issues were fixed: -...

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,...

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,...