{"id":"DEBIAN-CVE-2024-26815","details":"In the Linux kernel, the following vulnerability has been resolved:  net/sched: taprio: proper TCA_TAPRIO_TC_ENTRY_INDEX check  taprio_parse_tc_entry() is not correctly checking TCA_TAPRIO_TC_ENTRY_INDEX attribute:  \tint tc; // Signed value  \ttc = nla_get_u32(tb[TCA_TAPRIO_TC_ENTRY_INDEX]); \tif (tc \u003e= TC_QOPT_MAX_QUEUE) { \t\tNL_SET_ERR_MSG_MOD(extack, \"TC entry index out of range\"); \t\treturn -ERANGE; \t}  syzbot reported that it could fed arbitary negative values:  UBSAN: shift-out-of-bounds in net/sched/sch_taprio.c:1722:18 shift exponent -2147418108 is negative CPU: 0 PID: 5066 Comm: syz-executor367 Not tainted 6.8.0-rc7-syzkaller-00136-gc8a5c731fd12 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace:  \u003cTASK\u003e   __dump_stack lib/dump_stack.c:88 [inline]   dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106   ubsan_epilogue lib/ubsan.c:217 [inline]   __ubsan_handle_shift_out_of_bounds+0x3c7/0x420 lib/ubsan.c:386   taprio_parse_tc_entry net/sched/sch_taprio.c:1722 [inline]   taprio_parse_tc_entries net/sched/sch_taprio.c:1768 [inline]   taprio_change+0xb87/0x57d0 net/sched/sch_taprio.c:1877   taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2134   qdisc_create+0x9d4/0x1190 net/sched/sch_api.c:1355   tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776   rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6617   netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543   netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]   netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367   netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908   sock_sendmsg_nosec net/socket.c:730 [inline]   __sock_sendmsg+0x221/0x270 net/socket.c:745   ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584   ___sys_sendmsg net/socket.c:2638 [inline]   __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667  do_syscall_64+0xf9/0x240  entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f1b2dea3759 Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd4de452f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1b2def0390 RCX: 00007f1b2dea3759 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 R10: 0000555500000000 R11: 0000000000000246 R12: 00007ffd4de45340 R13: 00007ffd4de45310 R14: 0000000000000001 R15: 00007ffd4de45340","modified":"2026-09-15T09:02:55.990498569Z","published":"2024-04-10T11:15:49.380Z","upstream":["CVE-2024-26815"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-26815"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.85-1"}]}],"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","6.1.76-1~bpo11+1","6.1.82-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26815.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.7.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26815.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.7.12-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26815.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}