[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2022-48870":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T08:53:30.047Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":17,"related":18,"reserved_at":9,"published_at":19,"modified_at":20,"state":9,"summary":21,"references_raw":23,"kevs":30,"epss":9,"epss_history":31,"metrics":32,"affected":39},"DEBIAN-CVE-2022-48870","In the Linux kernel, the following vulnerability has been resolved:  tty: fix possible null-ptr-defer in spk_ttyio_release  Run the following tests on the qemu platform:  syzkaller:~# modprobe speakup_audptr  input: Speakup as /devices/virtual/input/input4  initialized device: /dev/synth, node (MAJOR 10, MINOR 125)  speakup 3.1.6: initialized  synth name on entry is: (null)  synth probe  spk_ttyio_initialise_ldisc failed because tty_kopen_exclusive returned failed (errno -16), then remove the module, we will get a null-ptr-defer problem, as follow:  syzkaller:~# modprobe -r speakup_audptr  releasing synth audptr  BUG: kernel NULL pointer dereference, address: 0000000000000080  #PF: supervisor write access in kernel mode  #PF: error_code(0x0002) - not-present page  PGD 0 P4D 0  Oops: 0002 [#1] PREEMPT SMP PTI  CPU: 2 PID: 204 Comm: modprobe Not tainted 6.1.0-rc6-dirty #1  RIP: 0010:mutex_lock+0x14/0x30  Call Trace:  \u003CTASK>   spk_ttyio_release+0x19/0x70 [speakup]   synth_release.part.6+0xac/0xc0 [speakup]   synth_remove+0x56/0x60 [speakup]   __x64_sys_delete_module+0x156/0x250   ? fpregs_assert_state_consistent+0x1d/0x50   do_syscall_64+0x37/0x90   entry_SYSCALL_64_after_hwframe+0x63/0xcd  \u003C/TASK>  Modules linked in: speakup_audptr(-) speakup  Dumping ftrace buffer:  in_synth->dev was not initialized during modprobe, so we add check for in_synth->dev to fix this bug.",null,[],[],[],[14],{"_key":15},"CVE-2022-48870",[],[],[],"2024-08-21T07:15:04.143Z","2026-04-28T20:24:57.339416Z",{"cisa_kev":22,"cisa_ransomware":22,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[24],{"url":25,"sources":26,"tags":28},"https://security-tracker.debian.org/tracker/CVE-2022-48870",[27],"osv_debian",[29],"Advisory",[],[],[33],{"source":27,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":34,"cvss_v4_0":9},{"baseScore":35,"baseSeverity":9,"vectorString":36,"impactScore":37,"exploitabilityScore":38},5.5,"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",6,4.6,[40],{"ecosystem":41,"name":42,"vendor":43,"product":42,"cpe_part":9,"purl_type":44,"purl_namespace":43,"purl_name":42,"source":9,"versions":45},"Debian","linux","debian","deb",[46,52,53],{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":50,"version_end_type":51,"fixed_in":9},"lt6_1_8_1",true,"ecosystem","6.1.8-1","excluding",{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":50,"version_end_type":51,"fixed_in":9},{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":50,"version_end_type":51,"fixed_in":9}]