CVE-2026-53083

CVE-2026-53083 affects the rootio-linux package in RootOS (Debian 11/12, Ubuntu 22.04/24.04). Multiple fixed versions are available; Root has patched the vulnerability. Remediate by updating to the patched rootio-linux versions for the respective OS releases.

CVE-2026-53083 bpf: Fix RCU stall in bpf_fd_array_map_clear()

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix RCU stall in bpffdarraymapclear Add a missing condresched in bpffdarraymapclear loop. For PROGARRAY maps with many entries this loop calls progarraymappokerun per entry which can be expensive, and without yielding this c...

CVE-2026-53081

The CVE-2026-53081 issue affects the Linux kernel BPF verifier: when two scalar registers carry BPF_ADD_CONST, id mapping could become inconsistent because the compound id (base | ADD_CONST) was mapped without validating the underlying base IDs. This could allow two verifier states where one deri...

CVE-2026-53081 bpf: Enforce regsafe base id consistency for BPF_ADD_CONST scalars

In the Linux kernel, the following vulnerability has been resolved: bpf: Enforce regsafe base id consistency for BPFADDCONST scalars When regsafe compares two scalar registers that both carry BPFADDCONST, checkscalarids maps their full compound id aka base | BPFADDCONST flag as one idmap entry...

CVE-2026-53081 bpf: Enforce regsafe base id consistency for BPF_ADD_CONST scalars

In the Linux kernel, the following vulnerability has been resolved: bpf: Enforce regsafe base id consistency for BPFADDCONST scalars When regsafe compares two scalar registers that both carry BPFADDCONST, checkscalarids maps their full compound id aka base | BPFADDCONST flag as one idmap entry...

CVE-2026-53078 bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix same-register dst/src OOB read and pointer leak in sockops When a BPF sockops program accesses ctx fields with dstreg == srcreg, the SOCKOPSGETSK and SOCKOPSGETFIELD macros fail to zero the destination register in the...

CVE-2026-53076 bpf: Fix OOB in pcpu_init_value

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix OOB in pcpuinitvalue An out-of-bounds read occurs when copying element from a BPFMAPTYPECGROUPSTORAGE map to another pcpu map with the same valuesize that is not rounded up to 8 bytes. The issue happens when: 1. A...

CVE-2026-53074

The CVE-2026-53074 issue affects the Linux kernel BPF test path: bpf_prog_test_run_skb may access IPv4/IPv6 headers (ip_hdr/ipv6_hdr) after eth_type_trans() when the test input only contains an Ethernet header. The fix folds IPv4/IPv6 header length checks into the existing protocol switch and ret...

CVE-2026-53074 bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb

In the Linux kernel, the following vulnerability has been resolved: bpf: reject short IPv4/IPv6 inputs in bpfprogtestrunskb bpfprogtestrunskb calls ethtypetrans first and then uses skb-protocol to initialize sk family and address fields for the test run. For IPv4 and IPv6 packets, it may access...

CVE-2026-53074 bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb

In the Linux kernel, the following vulnerability has been resolved: bpf: reject short IPv4/IPv6 inputs in bpfprogtestrunskb bpfprogtestrunskb calls ethtypetrans first and then uses skb-protocol to initialize sk family and address fields for the test run. For IPv4 and IPv6 packets, it may access...

EUVD-2026-38942

In the Linux kernel, the following vulnerability has been resolved: bpf: reject short IPv4/IPv6 inputs in bpfprogtestrunskb bpfprogtestrunskb calls ethtypetrans first and then uses skb-protocol to initialize sk family and address fields for the test run. For IPv4 and IPv6 packets, it may access...

CVE-2026-53036 bpf, arm64: Fix off-by-one in check_imm signed range check

In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Fix off-by-one in checkimm signed range check checkimmbits, imm is used in the arm64 BPF JIT to verify that a branch displacement in arm64 instruction units fits into the signed N-bit immediate field of a B, B.cond or...

CVE-2026-53035 bpf, sockmap: Fix af_unix iter deadlock

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix afunix iter deadlock bpfiterunixseqshow may deadlock when locksockfast takes the fast path and the iter prog attempts to update a sockmap. Which ends up spinning at sockmapupdateelem's bhlocksock: WARNING:...

CVE-2026-53033 bpf, sockmap: Take state lock for af_unix iter

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Take state lock for afunix iter When a BPF iterator program updates a sockmap, there is a race condition in unixstreambpfupdateproto where the peer pointer can become stale1 during a state transition TCPESTABLISHED ...

CVE-2026-53033

CVE-2026-53033 affects the Linux kernel’s BPF sockmap path, causing a race in unix_stream_bpf_update_proto() that can yield a Use-After-Free when a BPF iterator updates a sockmap during a TCP state transition. The issue is resolved by taking the state lock for AF_UNIX iterations to keep the unix ...

CVE-2026-53033 bpf, sockmap: Take state lock for af_unix iter

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Take state lock for afunix iter When a BPF iterator program updates a sockmap, there is a race condition in unixstreambpfupdateproto where the peer pointer can become stale1 during a state transition TCPESTABLISHED ...

CVE-2026-53032

The CVE-2026-53032 issue affects the Linux kernel's BPF subsystem, specifically the map_kptr_match_type function. A scalar register stored into a kptr can trigger a NULL dereference when the code branches on btf_is_kernel(reg->btf) before verifying base_type(), since such registers have no BTF...

CVE-2026-52938

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF storage. A race condition can occur where a storage element is accessed after its associated map has been deallocated, leading to a null pointer dereference. This can cause a kernel crash, resulting in a Denial of Service DoS for t...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: BPF: crypto: Use the correct destructor kfunc type With CONFIGCFI enabled, the kernel strictly ensures that indirect function calls use a function pointer type that matches the target function. I encountered the following type...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed a reference count leak in bpfprogtestrunxdp syzbot reports: unregisternetdevice: Waiting for sit0 to become available. Usage count = 2. A debug printk patch revealed that a reference count is obtained at...