cbcvebase.
CVE-2026-23379
published 2026-03-25

CVE-2026-23379: In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: fix divide by zero in the offload path Offloading ETS requires computing…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.13%
2.6th percentile
In the Linux kernel, the following vulnerability has been resolved: net/sched: ets: fix divide by zero in the offload path Offloading ETS requires computing each class' WRR weight: this is done by averaging over the sums of quanta as 'q_sum' and 'q_psum'. Using unsigned int, the same integer size as the individual DRR quanta, can overflow and even cause division by zero, like it happened in the following splat: Oops: divide error: 0000 [#1] SMP PTI CPU: 13 UID: 0 PID: 487 Comm: tc Tainted: G E 6.19.0-virtme #45 PREEMPT(full) Tainted: [E]=UNSIGNED_MODULE Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 RIP: 0010:ets_offload_change+0x11f/0x290 [sch_ets] Code: e4 45 31 ff eb 03 41 89 c7 41 89 cb 89 ce 83 f9 0f 0f 87 b7 00 00 00 45 8b 08 31 c0 45 01 cc 45 85 c9 74 09 41 6b c4 64 31 d2 f7 f2 89 c2 44 29 fa 45 89 df 41 83 fb 0f 0f 87 c7 00 00 00 44 RSP: 0018:ffffd0a180d77588 EFLAGS: 00010246 RAX: 00000000ffffff38 RBX: ffff8d3d482ca000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffd0a180d77660 RBP: ffffd0a180d77690 R08: ffff8d3d482ca2d8 R09: 00000000fffffffe R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffffe R13: ffff8d3d472f2000 R14: 0000000000000003 R15: 0000000000000000 FS: 00007f440b6c2740(0000) GS:ffff8d3dc9803000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000003cdd2000 CR3: 0000000007b58002 CR4: 0000000000172ef0 Call Trace: ets_qdisc_change+0x870/0xf40 [sch_ets] qdisc_create+0x12b/0x540 tc_modify_qdisc+0x6d7/0xbd0 rtnetlink_rcv_msg+0x168/0x6b0 netlink_rcv_skb+0x5c/0x110 netlink_unicast+0x1d6/0x2b0 netlink_sendmsg+0x22e/0x470 ____sys_sendmsg+0x38a/0x3c0 ___sys_sendmsg+0x99/0xe0 __sys_sendmsg+0x8a/0xf0 do_syscall_64+0x111/0xf80 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f440b81c77e Code: 4d 89 d8 e8 d4 bc 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f

Affected

60 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.19.8-1 (forky)linux 6.19.8-1 (forky)
linuxlinux
linuxlinux>= d35eb52bd2ac7557b62bda52668f2e64dde2cf90 < 62015c05878eb9ca448dca7f5a74423d10d4078962015c05878eb9ca448dca7f5a74423d10d40789
linuxlinux>= d35eb52bd2ac7557b62bda52668f2e64dde2cf90 < a11ec75a029b3a22b5596f98ce91a3be76a86213a11ec75a029b3a22b5596f98ce91a3be76a86213
linuxlinux>= d35eb52bd2ac7557b62bda52668f2e64dde2cf90 < 3912871344d6a0f1f572a7af2716968182d1e5363912871344d6a0f1f572a7af2716968182d1e536
linuxlinux>= d35eb52bd2ac7557b62bda52668f2e64dde2cf90 < 7dbffffd5761687e168fb2f4aaa7a2c47e067efc7dbffffd5761687e168fb2f4aaa7a2c47e067efc
linuxlinux>= d35eb52bd2ac7557b62bda52668f2e64dde2cf90 < 78b8d2f55a564236435649fbd8bd6a103f30acf578b8d2f55a564236435649fbd8bd6a103f30acf5
linuxlinux>= d35eb52bd2ac7557b62bda52668f2e64dde2cf90 < a6677e23b313cd9fd03690c589c6452cb6fffb97a6677e23b313cd9fd03690c589c6452cb6fffb97
linuxlinux>= d35eb52bd2ac7557b62bda52668f2e64dde2cf90 < abe1d5cb7fe135c0862c58db32bc29e04cf1c906abe1d5cb7fe135c0862c58db32bc29e04cf1c906
linuxlinux>= d35eb52bd2ac7557b62bda52668f2e64dde2cf90 < e35626f610f3d2b7953ccddf6a77453da22b3a9ee35626f610f3d2b7953ccddf6a77453da22b3a9e
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.19.8-16.19.8-1
linuxlinux_kernel>= 5.11 < 5.15.2035.15.203
linuxlinux_kernel>= 5.16 < 6.1.1676.1.167
linuxlinux_kernel>= 5.6.0 < 6.1.1676.1.167
linuxlinux_kernel>= 5.6.1 < 5.10.2535.10.253
linuxlinux_kernel>= 6.13 < 6.18.176.18.17
linuxlinux_kernel>= 6.13.0 < 6.18.176.18.17

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vendor_ubuntu7.1HIGH
vendor_msrc5.5MEDIUM
vendor_redhat5.5LOW
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