CVE-2026-63864

HighCVSS 8.4/10Last modified Jul 27, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

bpf: Propagate error from visit_tailcall_insn

Commit e40f5a6bf88a ("bpf: correct stack liveness for tail calls") added visit_tailcall_insn() but did not check its return value.

Metrics

CVSS 3.1 8.4/10CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Jul 19, 2026
Last modified
Jul 27, 2026
NVD status
Undergoing Analysis

Related CVEs from 2026

CVE-2026-638658.8In the Linux kernel, the following vulnerability has been resolved: bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hoCVE-2026-638668.8In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link() CVE-2026-638678.2In the Linux kernel, the following vulnerability has been resolved: mptcp: close TOCTOU race while computing rcv_wnd The MPTCP output pathCVE-2026-63868In the Linux kernel, the following vulnerability has been resolved: net: garp: fix unsigned integer underflow in garp_pdu_parse_attr The rCVE-2026-638697.6In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiCVE-2026-63877.0A potential authentication bypass vulnerability was reported in Lenovo System Update that could allow a local authenticated user to execute CVE-2026-638707.8In the Linux kernel, the following vulnerability has been resolved: ieee802154: 6lowpan: only accept IPv6 packets in lowpan_xmit() The aoeCVE-2026-63871In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix data-race on iso_pi fields in hci_get_route calls CVE-2026-63873In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix mm_struct reference leak in aie2_populate_range() aCVE-2026-638747.8In the Linux kernel, the following vulnerability has been resolved: net: mctp: usb: fix race between urb completion and rx_retry cancellatiCVE-2026-638757.8In the Linux kernel, the following vulnerability has been resolved: arm64: tlb: Flush walk cache when unsharing PMD tables When huge_pmd_uCVE-2026-63876In the Linux kernel, the following vulnerability has been resolved: serial: zs: Convert to use a platform device Prevent a crash from happ
CVE-2026-63864: High severity, CVSS 8.4 | Vulnix