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CVE-2025-21692
published 2025-02-10

CVE-2025-21692: In the Linux kernel, the following vulnerability has been resolved: net: sched: fix ets qdisc OOB Indexing Haowei Yan found that ets_class_from_arg() can index…

PriorityP342high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.60%
44.5th percentile
In the Linux kernel, the following vulnerability has been resolved: net: sched: fix ets qdisc OOB Indexing Haowei Yan found that ets_class_from_arg() can index an Out-Of-Bound class in ets_class_from_arg() when passed clid of 0. The overflow may cause local privilege escalation. [ 18.852298] ------------[ cut here ]------------ [ 18.853271] UBSAN: array-index-out-of-bounds in net/sched/sch_ets.c:93:20 [ 18.853743] index 18446744073709551615 is out of range for type 'ets_class [16]' [ 18.854254] CPU: 0 UID: 0 PID: 1275 Comm: poc Not tainted 6.12.6-dirty #17 [ 18.854821] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 [ 18.856532] Call Trace: [ 18.857441] [ 18.858227] dump_stack_lvl+0xc2/0xf0 [ 18.859607] dump_stack+0x10/0x20 [ 18.860908] __ubsan_handle_out_of_bounds+0xa7/0xf0 [ 18.864022] ets_class_change+0x3d6/0x3f0 [ 18.864322] tc_ctl_tclass+0x251/0x910 [ 18.864587] ? lock_acquire+0x5e/0x140 [ 18.865113] ? __mutex_lock+0x9c/0xe70 [ 18.866009] ? __mutex_lock+0xa34/0xe70 [ 18.866401] rtnetlink_rcv_msg+0x170/0x6f0 [ 18.866806] ? __lock_acquire+0x578/0xc10 [ 18.867184] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 18.867503] netlink_rcv_skb+0x59/0x110 [ 18.867776] rtnetlink_rcv+0x15/0x30 [ 18.868159] netlink_unicast+0x1c3/0x2b0 [ 18.868440] netlink_sendmsg+0x239/0x4b0 [ 18.868721] ____sys_sendmsg+0x3e2/0x410 [ 18.869012] ___sys_sendmsg+0x88/0xe0 [ 18.869276] ? rseq_ip_fixup+0x198/0x260 [ 18.869563] ? rseq_update_cpu_node_id+0x10a/0x190 [ 18.869900] ? trace_hardirqs_off+0x5a/0xd0 [ 18.870196] ? syscall_exit_to_user_mode+0xcc/0x220 [ 18.870547] ? do_syscall_64+0x93/0x150 [ 18.870821] ? __memcg_slab_free_hook+0x69/0x290 [ 18.871157] __sys_sendmsg+0x69/0xd0 [ 18.871416] __x64_sys_sendmsg+0x1d/0x30 [ 18.871699] x64_sys_call+0x9e2/0x2670 [ 18.871979] do_syscall_64+0x87/0x150 [ 18.873280] ? do_syscall_64+0x93/0x150 [ 18.874742] ? lock_release+0x7b/0x160 [ 18.876157] ? do_user_addr_fault+0x5ce/0x8f0 [ 18.877833] ? irqentry_exit_to_user_mode+0xc2/0x21

Affected

26 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.128-1 (bookworm)linux 6.1.128-1 (bookworm)
debianlinux-6.1< linux 6.1.128-1 (bookworm)linux 6.1.128-1 (bookworm)
linuxlinux
linuxlinux>= dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 < 03c56665dab1f4ac844bc156652d50d639093fa503c56665dab1f4ac844bc156652d50d639093fa5
linuxlinux>= dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 < bcf0d815e728a3a304b50455b32a3170c16e1eaabcf0d815e728a3a304b50455b32a3170c16e1eaa
linuxlinux>= dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 < 1332c6ed446be787f901ed1064ec6a3c694f028a1332c6ed446be787f901ed1064ec6a3c694f028a
linuxlinux>= dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 < f4168299e553f17aa2ba4016e77a9c38da40eb1df4168299e553f17aa2ba4016e77a9c38da40eb1d
linuxlinux>= dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 < 997f6ec4208b23c87daf9f044689685f091826f7997f6ec4208b23c87daf9f044689685f091826f7
linuxlinux>= dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 < f6b0f05fbfa4044f890e8a348288c0d9a20bd1d0f6b0f05fbfa4044f890e8a348288c0d9a20bd1d0
linuxlinux>= dcc68b4d8084e1ac9af0d4022d6b1aff6a139a33 < d62b04fca4340a0d468d7853bd66e511935a18cbd62b04fca4340a0d468d7853bd66e511935a18cb
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.128-16.1.128-1
linuxlinux_kernel>= 0 < 6.12.12-16.12.12-1
linuxlinux_kernel>= 0 < 6.12.12-16.12.12-1
linuxlinux_kernel>= 0 < 5.15.0-135.1465.15.0-135.146
linuxlinux_kernel>= 0 < 6.8.0-62.656.8.0-62.65
linuxlinux_kernel>= 5.11 < 5.15.1785.15.178
linuxlinux_kernel>= 5.16 < 6.1.1286.1.128
linuxlinux_kernel>= 5.6 < 5.10.2345.10.234
linuxlinux_kernel>= 6.2 < 6.6.756.6.75
linuxlinux_kernel>= 6.7 < 6.12.126.12.12
msrcazl3_kernel_6.6.64.2-9_on_azure_linux_3.0
msrcazl3_kernel_6.6.76.1-1_on_azure_linux_3.0
msrccbl2_kernel_5.15.176.3-3_on_cbl_mariner_2.0

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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