{"id":"DEBIAN-CVE-2026-23183","details":"In the Linux kernel, the following vulnerability has been resolved:  cgroup/dmem: fix NULL pointer dereference when setting max  An issue was triggered:   BUG: kernel NULL pointer dereference, address: 0000000000000000  #PF: supervisor read access in kernel mode  #PF: error_code(0x0000) - not-present page  PGD 0 P4D 0  Oops: Oops: 0000 [#1] SMP NOPTI  CPU: 15 UID: 0 PID: 658 Comm: bash Tainted: 6.19.0-rc6-next-2026012  Tainted: [O]=OOT_MODULE  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),  RIP: 0010:strcmp+0x10/0x30  RSP: 0018:ffffc900017f7dc0 EFLAGS: 00000246  RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888107cd4358  RDX: 0000000019f73907 RSI: ffffffff82cc381a RDI: 0000000000000000  RBP: ffff8881016bef0d R08: 000000006c0e7145 R09: 0000000056c0e714  R10: 0000000000000001 R11: ffff888107cd4358 R12: 0007ffffffffffff  R13: ffff888101399200 R14: ffff888100fcb360 R15: 0007ffffffffffff  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  CR2: 0000000000000000 CR3: 0000000105c79000 CR4: 00000000000006f0  Call Trace:   \u003cTASK\u003e   dmemcg_limit_write.constprop.0+0x16d/0x390   ? __pfx_set_resource_max+0x10/0x10   kernfs_fop_write_iter+0x14e/0x200   vfs_write+0x367/0x510   ksys_write+0x66/0xe0   do_syscall_64+0x6b/0x390   entry_SYSCALL_64_after_hwframe+0x76/0x7e  RIP: 0033:0x7f42697e1887  It was trriggered setting max without limitation, the command is like: \"echo test/region0 \u003e dmem.max\". To fix this issue, add check whether options is valid after parsing the region_name.","modified":"2026-09-14T16:47:49.755559841Z","published":"2026-02-14T17:15:56.067Z","upstream":["CVE-2026-23183"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-23183"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.18.10-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.107-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.10-1","6.16.11-1","6.16.12-1","6.16.12-1~bpo13+1","6.16.12-2","6.16.3-1","6.16.3-1~bpo13+1","6.16.5-1","6.16.6-1","6.16.7-1","6.16.8-1","6.16.9-1","6.16~rc7-1~exp1","6.17.10-1","6.17.11-1","6.17.12-1","6.17.13-1","6.17.13-1~bpo13+1","6.17.2-1~exp1","6.17.5-1~exp1","6.17.6-1","6.17.7-1","6.17.7-2","6.17.8-1","6.17.8-1~bpo13+1","6.17.9-1","6.18.1-1~exp1","6.18.2-1~exp1","6.18.3-1","6.18.5-1","6.18.5-1~bpo13+1","6.18.8-1","6.18.9-1","6.18.9-1~bpo13+1","6.18~rc4-1~exp1","6.18~rc4-1~exp2","6.18~rc5-1~exp1","6.18~rc6-1~exp1","6.18~rc7-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23183.json"}}],"schema_version":"1.9.0"}