CVE-2026-98075

In the Linux kernel, the following vulnerability has been resolved: bpf: reject BPFPSEUDOFUNC reference to the main program fixups.c:jitsubprogs rewrites BPFPSEUDOFUNC loads to contain real function addresses. This function is invoked from bpfjitsubprogs only when env-subprogcnt 1. Meaning that f...

CVE-2026-98150: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix BPFFCPU validation for sparse CPU IDs BPFFCPU stores the target CPU ID in the upper 32 bits of the map operation flags. bpfmapcheckopflags currently compares that ID with numpossiblecpus, which is the number of possible...

CVE-2026-98040: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark the zero register precise for a register-form NULL check checkcondjmpop accepts "if rA rB" as a NULL check for a nullable pointer rA when rB is a scalar known to be zero, lifts PTRMAYBENULL from rA in the corresponding...

CVE-2026-98040

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark the zero register precise for a register-form NULL check checkcondjmpop accepts "if rA rB" as a NULL check for a nullable pointer rA when rB is a scalar known to be zero, lifts PTRMAYBENULL from rA in the corresponding...

CVE-2026-98065: Undefined Security Weakness

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, ...

CVE-2026-98036: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve special fields in recycled rhtab elements rhtabmapupdateelem initializes special fields after obtaining an element from bpfmemcachealloc. The allocator can return a fresh, zeroed unit, or recycle one from its...

CVE-2026-98035

In the Linux kernel, the following vulnerability has been resolved: bpf: Cancel special fields when recycling rhtab elements rhtabmapupdateexisting and rhtabdeleteelem call bpfobjfreefields when replacing or deleting a value. These map operations can run from BPF programs in NMI context, where...

CVE-2026-98036

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve special fields in recycled rhtab elements rhtabmapupdateelem initializes special fields after obtaining an element from bpfmemcachealloc. The allocator can return a fresh, zeroed unit, or recycle one from its...

CVE-2026-98046: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark bpfbtffindbynamekind as sleepable When bpfbtffindbynamekind finds a type in module BTF, it returns a new BTF object fd through btfnewfd. This reaches anoninodegetfd, which can sleep while allocating or expanding the...

Linux Distros Unpatched Vulnerability : CVE-2026-98039

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Require MEMPERCPU for percpu kptr stores mapkptrmatchtype treats permflags as the set of register type flags that a kptr field permits. Adding MEMPERCPU to...

Linux Distros Unpatched Vulnerability : CVE-2026-98061

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Reject tail calls directly from callback frames A tail call from a non-zero frame is modeled as a return from that frame. The verifier makes R0 unknown and...

Linux Distros Unpatched Vulnerability : CVE-2026-98042

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: bpf: Don't resurrect a scalar id dropped by collectlinkedregs checkcondjmpop copies the...

Linux Distros Unpatched Vulnerability : CVE-2026-98064

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

CVE-2026-98038: Undefined Security Weakness

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...

Linux Distros Unpatched Vulnerability : CVE-2026-98060

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Reject resilient lock operations in rbtree callbacks bpfrbtreeadd keeps parent and link pointers live across calls to the program-supplied comparison...

CVE-2026-98044: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject legacy packet loads from callbacks checkldabs models a failed BPFLDABS or BPFLDIND in a subprogram as an implicit return with R0 set to zero. It calls preparefuncexit to explore this synthesized path. When the load is...

PT-2026-98728

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF Berkeley Packet Filter subsystem where the map check btf function allows the creation of hash maps with a key-less BTF BPF Type Format, specifically when btf k...

CVE-2026-98034: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark NULL kptr stores precise checkmapkptraccess permits a scalar store into an untrusted kptr field only when the register is known to contain zero. Unlike other verifier checks whose outcome depends on a scalar value, it...

CVE-2026-98085

In the Linux kernel, the following vulnerability has been resolved: bpf: backtrackinsn: Handle ldabs,ind subprog exit edge Nicholas Carlini reported a bug in precision backtracking mechanism for BPFLD | BPFIND,ABS instructions. These instructions are modelled as two branches: - fallthrough; -...

CVE-2026-98033

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve inner map identity in callback frames Callback frame constructors initialize map-typed argument registers with markregknownzero and then restore mapptr. This clears mapuid, which is the only field distinguishing inn...