[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2025-68257":6},{"stargazers_count":4,"fetched_at":5},7,"2026-07-30T21:17:53.703Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":23,"related":24,"reserved_at":9,"published_at":25,"modified_at":26,"state":9,"summary":27,"references_raw":29,"kevs":36,"epss":9,"epss_history":37,"metrics":38,"affected":39},"DEBIAN-CVE-2025-68257","In the Linux kernel, the following vulnerability has been resolved:  comedi: check device's attached status in compat ioctls  Syzbot identified an issue [1] that crashes kernel, seemingly due to unexistent callback dev->get_valid_routes(). By all means, this should not occur as said callback must always be set to get_zero_valid_routes() in __comedi_device_postconfig().  As the crash seems to appear exclusively in i386 kernels, at least, judging from [1] reports, the blame lies with compat versions of standard IOCTL handlers. Several of them are modified and do not use comedi_unlocked_ioctl(). While functionality of these ioctls essentially copy their original versions, they do not have required sanity check for device's attached status. This, in turn, leads to a possibility of calling select IOCTLs on a device that has not been properly setup, even via COMEDI_DEVCONFIG.  Doing so on unconfigured devices means that several crucial steps are missed, for instance, specifying dev->get_valid_routes() callback.  Fix this somewhat crudely by ensuring device's attached status before performing any ioctls, improving logic consistency between modern and compat functions.  [1] Syzbot report: BUG: kernel NULL pointer dereference, address: 0000000000000000 ... CR2: ffffffffffffffd6 CR3: 000000006c717000 CR4: 0000000000352ef0 Call Trace:  \u003CTASK>  get_valid_routes drivers/comedi/comedi_fops.c:1322 [inline]  parse_insn+0x78c/0x1970 drivers/comedi/comedi_fops.c:1401  do_insnlist_ioctl+0x272/0x700 drivers/comedi/comedi_fops.c:1594  compat_insnlist drivers/comedi/comedi_fops.c:3208 [inline]  comedi_compat_ioctl+0x810/0x990 drivers/comedi/comedi_fops.c:3273  __do_compat_sys_ioctl fs/ioctl.c:695 [inline]  __se_compat_sys_ioctl fs/ioctl.c:638 [inline]  __ia32_compat_sys_ioctl+0x242/0x370 fs/ioctl.c:638  do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] ...",null,[],[],[],[14],{"_key":15},"CVE-2025-68257",[17,19,21],{"_key":18},"DLA-4476-1",{"_key":20},"DLA-4475-1",{"_key":22},"DSA-6127-1",[],[],"2025-12-16T15:15:55.100Z","2026-06-15T18:48:56.433309278Z",{"cisa_kev":28,"cisa_ransomware":28,"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,[30],{"url":31,"sources":32,"tags":34},"https://security-tracker.debian.org/tracker/CVE-2025-68257",[33],"osv_debian",[35],"Advisory",[],[],[],[40,64],{"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",[46,50,51,55,58,61],{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"all",true,"ecosystem",{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":52,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":53,"version_end_type":54,"fixed_in":9},"lt5_10_249_1","5.10.249-1","excluding",{"version":56,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":57,"version_end_type":54,"fixed_in":9},"lt6_1_162_1","6.1.162-1",{"version":59,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":60,"version_end_type":54,"fixed_in":9},"lt6_12_63_1","6.12.63-1",{"version":62,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":63,"version_end_type":54,"fixed_in":9},"lt6_17_12_1","6.17.12-1",{"ecosystem":41,"name":65,"vendor":43,"product":65,"cpe_part":9,"purl_type":44,"purl_namespace":43,"purl_name":65,"source":9,"versions":66},"linux-6.1",[67,68],{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":69,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":70,"version_end_type":54,"fixed_in":9},"lt6_1_162_1~deb11u1","6.1.162-1~deb11u1"]