{"id":"CVE-2026-58824","kind":"vulnerability","aliases":["CVE-2026-58824"],"related":[],"title":"Linux kernel pKVM tracing: out-of-bounds write lets local user gain privileges","description":"In __pkvm_load_tracing of trace.c, there is a possible out-of-bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","summary":"A bounds check in the __pkvm_load_tracing function of the kernel's trace.c is incorrect, allowing an out-of-bounds write. A local user could use it to escalate privileges without extra execution rights or user interaction.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["android","arm64","infrastructure","linux-kernel","pkvm"],"not_affected_if":["no-pkvm"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-02T20:17:47+00:00","first_seen_at":"2026-11-02T20:35:30+00:00","triaged_at":"2026-11-02T20:39:12+00:00","updated_at":"2026-11-02T20:39:12+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-02T20:39:12Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Linux kernel pKVM tracing: out-of-bounds write lets local user gain privileges","impact":"high","summary":"A bounds check in the __pkvm_load_tracing function of the kernel's trace.c is incorrect, allowing an out-of-bounds write. A local user could use it to escalate privileges without extra execution rights or user interaction.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["linux-kernel","arm64","pkvm","android"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user escalates to kernel-level privileges","analyst_note":"Find the affected and fixed kernel versions and confirm pKVM tracing is required, via the upstream kernel commit or the NVD entry.","how_to_check":"- unknown","plain_action":"","needs_analyst":true,"not_affected_if":["no-pkvm"],"who_is_affected":"Affects systems running a kernel with pKVM (protected KVM) tracing code, typically Android-style or arm64 virtualization setups. The sources do not say which kernel versions or configurations are vulnerable. Machines without pKVM tracing support can likely skip it, but the sources do not confirm this.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"high"},"cost_usd":0.00065,"input_tokens":4104,"output_tokens":479,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-58824':17A,20A 'addit':98C 'allow':44B 'android':21B 'arm64':22B 'bound':8A,29B,49B,80C,86C 'check':30B,87C 'could':54B,89C 'cve':15A,18A 'due':82C 'escal':58B,93C 'execut':62B,99C 'exploit':108C 'extra':61B 'function':36B 'gain':13A 'incorrect':43B,85C 'infrastructur':23B 'interact':66B,103C 'kernel':2A,26B,39B 'lead':90C 'let':10A 'linux':1A,25B 'linux-kernel':24B 'load':34B,69C 'local':11A,52B,92C 'need':101C,106C 'out-of-bound':5A,46B,77C 'pkvm':3A,27B,33B,68C 'possibl':76C 'privileg':14A,59B,95C,100C 'right':63B 'trace':4A,35B,70C 'trace.c':41B,72C 'use':55B 'user':12A,53B,65B,102C 'without':60B 'write':9A,50B,81C","nicknames":[],"mitigations":[],"who_affected":"Affects systems running a kernel with pKVM (protected KVM) tracing code, typically Android-style or arm64 virtualization setups. The sources do not say which kernel versions or configurations are vulnerable. Machines without pKVM tracing support can likely skip it, but the sources do not confirm this.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["android","arm64","infrastructure","linuxkernel","pkvm","unknown"],"first_public_at":"2026-11-02T20:17:47+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-58824","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58824","severity":null,"published_at":"2026-11-02T20:17:47+00:00","modified_at":"2026-11-02T20:17:47+00:00","first_seen_at":"2026-11-02T20:35:30+00:00","fetched_at":"2026-11-02T20:35:30+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}