{"id":"DEBIAN-CVE-2024-26638","details":"In the Linux kernel, the following vulnerability has been resolved:  nbd: always initialize struct msghdr completely  syzbot complains that msg-\u003emsg_get_inq value can be uninitialized [1]  struct msghdr got many new fields recently, we should always make sure their values is zero by default.  [1]  BUG: KMSAN: uninit-value in tcp_recvmsg+0x686/0xac0 net/ipv4/tcp.c:2571   tcp_recvmsg+0x686/0xac0 net/ipv4/tcp.c:2571   inet_recvmsg+0x131/0x580 net/ipv4/af_inet.c:879   sock_recvmsg_nosec net/socket.c:1044 [inline]   sock_recvmsg+0x12b/0x1e0 net/socket.c:1066   __sock_xmit+0x236/0x5c0 drivers/block/nbd.c:538   nbd_read_reply drivers/block/nbd.c:732 [inline]   recv_work+0x262/0x3100 drivers/block/nbd.c:863   process_one_work kernel/workqueue.c:2627 [inline]   process_scheduled_works+0x104e/0x1e70 kernel/workqueue.c:2700   worker_thread+0xf45/0x1490 kernel/workqueue.c:2781   kthread+0x3ed/0x540 kernel/kthread.c:388   ret_from_fork+0x66/0x80 arch/x86/kernel/process.c:147   ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242  Local variable msg created at:   __sock_xmit+0x4c/0x5c0 drivers/block/nbd.c:513   nbd_read_reply drivers/block/nbd.c:732 [inline]   recv_work+0x262/0x3100 drivers/block/nbd.c:863  CPU: 1 PID: 7465 Comm: kworker/u5:1 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: nbd5-recv recv_work","modified":"2026-09-15T09:03:04.721811334Z","published":"2024-03-18T11:15:10.720Z","upstream":["CVE-2024-26638"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-26638"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.76-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26638.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26638.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26638.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}]}