CVE-2026-63870

In the Linux kernel, the following vulnerability has been resolved: ieee802154: 6lowpan: only accept IPv6 packets in lowpanxmit The aoe driver or similar generates a non-IPv6 packet e.g., ETHPAOE and queues it for transmission via devqueuexmit on a 6LoWPAN interface configured by the user or test...

CVE-2026-63800

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfsupdatelayout When hitting the NFSLAYOUTRETURN branch in pnfsupdatelayout, the code calls pnfspreparetoretrylayoutgetlo. If it succeeds, pnfsputlayouthdrlo is called before tracepnfsupdatelayout,...

CVE-2026-63830

In the Linux kernel, the following vulnerability has been resolved: net: skmsg: preserve sg.copy across SG transforms The skmsg sg.copy bitmap is part of the scatterlist entry ownership state. A set bit tells skmsgcomputedatapointers not to expose the entry through writable BPF ctx-data. This...

CVE-2026-53399

In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4allocstid publishes the new stid into cl-clstateids via idralloccyclic under cllock before returning to nfsd4alloclayoutstateid. When nfsd4layoutsetlease then fails, the error pat...

CVE-2026-53391

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length raddr in nfs4decodempdsaddr nfs4decodempdsaddr decodes the rnetid and raddr opaques of a netaddr4 from a GETDEVICEINFO multipath-DS body, then immediately calls strrchrbuf, '.' to locate the port...

CVE-2026-63820

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix missing read bio submission on large folio error f2fsreaddatalargefolio can keep a read bio across multiple readahead folios. If a later folio hits an error before any of its blocks are added to the bio, folioinbio is...

UBUNTU-CVE-2026-53391

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length raddr in nfs4decodempdsaddr nfs4decodempdsaddr decodes the rnetid and raddr opaques of a netaddr4 from a GETDEVICEINFO multipath-DS body, then immediately calls strrchrbuf, '.' to locate the port...

CVE-2026-53387

In the Linux kernel, the following vulnerability has been resolved: iio: light: veml6075: add bounds check to veml6075itms index veml6075itms has 5 elements but VEML6075CONFIT can yield values 0-7. If it returns a value = 5, this causes an out-of-bounds array access. Add a bounds check and return...

CVE-2026-53389

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: fix use-after-free of key in delasync path In tcpaodeletekey, the delasync path skips the currentkey and rnextkey validity checks present in the synchronous path, assuming these pointers are always NULL on LISTEN...

CVE-2026-53401

In the Linux kernel, the following vulnerability has been resolved: fbdev: omap2: fix use-after-free in omapfbmmap omapfbmmap has a race condition with OMAPFBSETUPPLANE ioctl that can lead to use-after-free: The fbmmap entry point holds mmlock but not lock fbinfo-lock, while ioctl handlers like...

CVE-2026-63825

In the Linux kernel, the following vulnerability has been resolved: gcov: use atomic counter updates to fix concurrent access crashes GCC's GCOV instrumentation can merge global branch counters with loop induction variables as an optimization. In inflatefast, the inner copy loops get transformed ...

CVE-2026-63829

In the Linux kernel, the following vulnerability has been resolved: net: ipgre: require CAPNETADMIN in the device netns for changelink A tunnel changelink operates on at most two netns, devnetdev and the tunnel link netns t-net. They differ once the device is created in or moved to a netns other...

CVE-2026-63808

In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential use-after-free in exfatfinddirentry In exfatfinddirentry, the bufferhead obtained from exfatgetdentry is released with brelsebh before the fall-through TYPEEXTEND branch reads the directory entry through ep...

CVE-2026-63833

In the Linux kernel, the following vulnerability has been resolved: ntfs3: reject direct userspace writes to reserved $LX xattrs NTFS3 uses $LXUID, $LXGID, $LXMOD and $LXDEV as internal WSL permission metadata and reloads them into iuid, igid and imode from ntfsgetwslperm. Because the empty-prefi...

CVE-2026-53383

In the Linux kernel, the following vulnerability has been resolved: ksmbd: reject non-VALID session in compound request branch smb2checkusersession takes a shortcut for any operation that is not the first in a COMPOUND request: it reuses work-sess the session bound by the first operation and...

UBUNTU-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...

UBUNTU-CVE-2026-53397

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix posixacl leak on SETACL decode failure nfsaclsvcdecodesetaclargs and nfs3svcdecodesetaclargs each call nfsstreamdecodeacl twice, first for NFSACL and then for NFSDFACL. Each successful call transfers ownership of a...

UBUNTU-CVE-2026-63817

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate compress cache inode only when enabled F2FSCOMPRESSINO uses NMIsbi-maxnid as the synthetic inode number for the compressed page cache inode. That inode only exists when the compresscache mount option is enabled. Wh...

CVE-2026-63810

In the Linux kernel, the following vulnerability has been resolved: block: Avoid mounting the bdev pseudo-filesystem in userspace The bdev pseudo-filesystem is an internal kernel filesystem with which userspace should not interfere. Unregister it so that userspace cannot even attempt to mount it...

CVE-2026-63817

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate compress cache inode only when enabled F2FSCOMPRESSINO uses NMIsbi-maxnid as the synthetic inode number for the compressed page cache inode. That inode only exists when the compresscache mount option is enabled. Wh...