CVE-2026-63828

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

CVE-2026-63814

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fsaclfromdisk f2fsaclcount only validates the aggregate ACL xattr length. A malformed ACL can still place ACLUSER or ACLGROUP in a slot that only contains struct f2fsaclentryshort bytes, and...

CVE-2026-53382

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix NULL pointer dereference in vidtvmuxpushsi syzbot reported a general protection fault in vidtvpsitspsiwriteinto 1. vidtvmuxgetpidctx can return NULL, but vidtvmuxpushsi does not check for this before dereferenci...

CVE-2026-63836 batman-adv: tp_meter: avoid divide-by-zero for dec_cwnd

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid divide-by-zero for deccwnd The cwnd is always MSS = cwnd = 0x20000000. But the calculation in batadvtpupdatecwnd assumes unsigned 32 bit arithmetics. mss 8 2 / cwnd 8 In case cwnd is actually 0x20000000...

CVE-2026-63827 apparmor: fix use-after-free in rawdata dedup loop

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix use-after-free in rawdata dedup loop aareplaceprofiles walks ns-rawdatalist to dedup the incoming policy blob against entries already attached to existing profiles. Per the kernel-doc on struct aaloaddata, list...

CVE-2026-63828 apparmor: mediate the implicit connect of TCP fast open sendmsg

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

CVE-2026-63828

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

CVE-2026-63824

In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctlpkeyparamsget2 The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the siz...

EUVD-2026-45485

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on f2fsgetnodefoliora kernel BUG at fs/f2fs/file.c:845! Oops: invalid opcode: 0000 1 SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller 0 PREEMPTfull Hardware name: QEMU...

CVE-2026-63819

CVE-2026-63819 affects the Linux kernel f2fs filesystem. The issue arises in f2fs_do_truncate_blocks/f2fs_get_node_folio_ra where a corrupted inode footer can lead to a negative count in ADDRS_PER_PAGE(dn.node_folio, inode) and trigger a kernel panic (BUG_ON) during truncation/evict_inode. Root c...

CVE-2026-63819 f2fs: fix to do sanity check on f2fs_get_node_folio_ra()

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on f2fsgetnodefoliora kernel BUG at fs/f2fs/file.c:845! Oops: invalid opcode: 0000 1 SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller 0 PREEMPTfull Hardware name: QEMU...

CVE-2026-63815 f2fs: bound i_inline_xattr_size for non-inline-xattr inodes

In the Linux kernel, the following vulnerability has been resolved: f2fs: bound iinlinexattrsize for non-inline-xattr inodes When the flexibleinlinexattr feature is enabled, doreadinode loads the on-disk iinlinexattrsize unconditionally: if f2fssbhasflexibleinlinexattrsbi fi-iinlinexattrsize =...

CVE-2026-63814 f2fs: validate ACL entry sizes in f2fs_acl_from_disk()

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fsaclfromdisk f2fsaclcount only validates the aggregate ACL xattr length. A malformed ACL can still place ACLUSER or ACLGROUP in a slot that only contains struct f2fsaclentryshort bytes, and...

CVE-2026-63814

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate ACL entry sizes in f2fsaclfromdisk f2fsaclcount only validates the aggregate ACL xattr length. A malformed ACL can still place ACLUSER or ACLGROUP in a slot that only contains struct f2fsaclentryshort bytes, and...

CVE-2026-63810 block: Avoid mounting the bdev pseudo-filesystem in userspace

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-2026-63808

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...

EUVD-2026-45474

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-2026-63804

The CVE-2026-63804 issue is a gfs2 use-after-free in gfs2_qd_dealloc triggered by an RCU callback accessing sdp after qd is freed. The root cause is that gfs2_put_super() may free the superblock via free_sbd() before pending RCU callbacks (including gfs2_qd_dealloc) complete. The public details i...

EUVD-2026-45471

In the Linux kernel, the following vulnerability has been resolved: crypto: nx - fix nxcryptoctxexit argument nxcryptoctxshashexit calls nxcryptoctxexit with cryptoshashctx... but cryptoshashctx gives a nxcryptoctx , not a cryptotfm . Fix the type in nxcryptoctxexit and drop the bogus cryptotfmct...

CVE-2026-63796 ocfs2: reject oversized group bitmap descriptors

In the Linux kernel, the following vulnerability has been resolved: ocfs2: reject oversized group bitmap descriptors ocfs2validategdparent only bounds bgbits against the parent allocator's chain geometry. A malicious descriptor can still claim a bgsize/bgbits pair that exceeds the bitmap bytes th...