UBUNTU-CVE-2026-98065

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject key-less BTF for hash maps mapcheckbtf allows a key-less BTF btfkeytypeid == 0 only for maps that have a -mapcheckbtf callback, and leaves the actual decision to that callback. Hash maps used to have no -mapcheckbtf, ...

UBUNTU-CVE-2026-97975

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisysfs: Fix NULL pointer dereference in devicedel A NULL pointer dereference in klistput occurs when a child device such as a BNEP network device in bnepsession is concurrently being unregistered while hciconndelsysf...

UBUNTU-CVE-2026-97947

In the Linux kernel, the following vulnerability has been resolved: x86/amdnode: Fix potential NULL pointer dereference amdsmnread/write are exported functions around amdsmnrw, so they are always available even if amdsmninit fails. In that case, 'amdroots' is NULL and amdsmnrw will access...

UBUNTU-CVE-2026-98063

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL-ptr-deref in btfvarshow btfvarshow calls btftypeidresolve unconditionally, which dereferences btf-resolvedids. That is NULL for a base BTF - e.g. the vmlinux BTF that bpfsnprintfbtf renders against - since base BTF ...

UBUNTU-CVE-2026-98043

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't infer non-NULL from a pointer with an unbounded offset regnotnull decides that a register holds a non-NULL value by looking at its type alone. For pointer types that allow arithmetic the type only guarantees a non-NULL...

UBUNTU-CVE-2026-98059

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark schedprocesswait argument as nullable dowait passes wo-wopid to the schedprocesswait tracepoint. kernelwait4 leaves wopid NULL for wait4-1, and kernelwaitidprepare does likewise for waitidPALL. btfctxaccess currently...

UBUNTU-CVE-2026-98098

In the Linux kernel, the following vulnerability has been resolved: tipc: fix NULL deref in tipcnamednodeup on empty publication list User-space applications can bind a large number of service addresses to one or more sockets. Each binding of a local-scope service address inserts one entry...

UBUNTU-CVE-2026-98064

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL-ptr-deref when showing a void BTF type btfmodifiershow resolves the modifier and then calls btftypeopst-show unconditionally. For the void type typeid 0, BTFKINDUNKN kindops has no entry, so -show is NULL. A "const...

UBUNTU-CVE-2026-98020

In the Linux kernel, the following vulnerability has been resolved: pdscore: fix cmdregs access racing BAR unmap on reset pdscresetprepare and pdscresetdone's pdscmapbars error path clear/iounmap cmdregs without devcmdlock, and pdsclegacyfirmwareupdate's download loop derefs cmdregs after droppin...

UBUNTU-CVE-2026-97593

In the Linux kernel, the following vulnerability has been resolved: iommu/s390: Fix NULL dereference in iovatophys with ZPCITABLETYPERFX When using a 5-level translation table via ZPCITABLETYPERFX getrsofromiova returns NULL when the region-first entry is invalid. Yet in getrtofromiova the...

UBUNTU-CVE-2026-98134

In the Linux kernel, the following vulnerability has been resolved: bpf: checkcondjmpop: properly infer if register is null Nicholas Carlini reported a bug when verifier can incorrectly infer that a pointer is non-null. The bug occurs when two pointers are compared and one of them has a type w/o...

UBUNTU-CVE-2026-98121

In the Linux kernel, the following vulnerability has been resolved: watchdog: msc313e: Fix NULL pointer dereference in PM callbacks msc313ewdtprobe doesn't set the driver data for the platform device. As a result, devgetdrvdata in msc313ewdtsuspend and msc313ewdtresume will return NULL, leading t...

UBUNTU-CVE-2026-98086

In the Linux kernel, the following vulnerability has been resolved: ALSA: ump: do not touch legacyrmidi before it exists sndumpparseendpoint sets ump-parsed on every exit, including error, before the caller attaches the legacy rawmidi device. umphandleepnamemsg then treats parsed as "legacyrmidi ...

UBUNTU-CVE-2026-98038

In the Linux kernel, the following vulnerability has been resolved: bpf: Keep refcountacquire nullable for borrowed RCU kptrs bpfrefcountacquire is fallible for a borrowed reference because the object may have reached a zero refcount. The verifier therefore keeps KFRETNULL on the return value...

UBUNTU-CVE-2026-97532

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Null out freed pointers in qla2x00memalloc error path When qla2x00memalloc fails, qla2x00probeone jumps to probehwfailed and calls qla2x00memfree. Several error labels in qla2x00memalloc freed adapter members...

UBUNTU-CVE-2026-97974

In the Linux kernel, the following vulnerability has been resolved: ipv6: null-check fib6node before accessing in ip6delrtsiblings syzbot reported a null-ptr-deref in ip6delrtsiblings 0. The stack trace hinted towards a null dereference of rt-fib6node when fn-leaf is accessed in ip6delrtsiblings...

UBUNTU-CVE-2026-98008

In the Linux kernel, the following vulnerability has been resolved: net: macb: fix NULL pointer dereference on unbind with fixed-link When the device tree describes a fixed-link and has no "mdio" child node, macbmiiinit returns early without allocating the MDIO bus, leaving bp-miibus as NULL. Two...

CVE-2026-98134 bpf: check_cond_jmp_op(): properly infer if register is null

In the Linux kernel, the following vulnerability has been resolved: bpf: checkcondjmpop: properly infer if register is null Nicholas Carlini reported a bug when verifier can incorrectly infer that a pointer is non-null. The bug occurs when two pointers are compared and one of them has a type w/o...

EUVD-2026-86965

In the Linux kernel, the following vulnerability has been resolved: bpf: checkcondjmpop: properly infer if register is null Nicholas Carlini reported a bug when verifier can incorrectly infer that a pointer is non-null. The bug occurs when two pointers are compared and one of them has a type w/o...

CVE-2026-98134

In the Linux kernel, the following vulnerability has been resolved: bpf: checkcondjmpop: properly infer if register is null Nicholas Carlini reported a bug when verifier can incorrectly infer that a pointer is non-null. The bug occurs when two pointers are compared and one of them has a type w/o...