cbcvebase.
CVE-2026-23064
published 2026-02-04

CVE-2026-23064: In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ife: avoid possible NULL deref tcf_ife_encode() must make sure ife_encode()…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.12%
2.5th percentile
In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ife: avoid possible NULL deref tcf_ife_encode() must make sure ife_encode() does not return NULL. syzbot reported: Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:ife_tlv_meta_encode+0x41/0xa0 net/ife/ife.c:166 CPU: 3 UID: 0 PID: 8990 Comm: syz.0.696 Not tainted syzkaller #0 PREEMPT(full) Call Trace: ife_encode_meta_u32+0x153/0x180 net/sched/act_ife.c:101 tcf_ife_encode net/sched/act_ife.c:841 [inline] tcf_ife_act+0x1022/0x1de0 net/sched/act_ife.c:877 tc_act include/net/tc_wrapper.h:130 [inline] tcf_action_exec+0x1c0/0xa20 net/sched/act_api.c:1152 tcf_exts_exec include/net/pkt_cls.h:349 [inline] mall_classify+0x1a0/0x2a0 net/sched/cls_matchall.c:42 tc_classify include/net/tc_wrapper.h:197 [inline] __tcf_classify net/sched/cls_api.c:1764 [inline] tcf_classify+0x7f2/0x1380 net/sched/cls_api.c:1860 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0xe0/0x510 net/sched/sch_multiq.c:66 dev_qdisc_enqueue+0x45/0x250 net/core/dev.c:4147 __dev_xmit_skb net/core/dev.c:4262 [inline] __dev_queue_xmit+0x2998/0x46c0 net/core/dev.c:4798

Affected

62 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
debianlinux-6.1< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
linuxlinux
linuxlinux>= 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 4ef2c77851676b7ed106f0c47755bee9eeec9a404ef2c77851676b7ed106f0c47755bee9eeec9a40
linuxlinux>= 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < dd9442aedbeae87c44cc64c0ee41abd296dc008bdd9442aedbeae87c44cc64c0ee41abd296dc008b
linuxlinux>= 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 1440d749fe49c8665da6f744323b1671d25a56a01440d749fe49c8665da6f744323b1671d25a56a0
linuxlinux>= 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 03710cebfc0bcfe247a9e04381e79ea33896e27803710cebfc0bcfe247a9e04381e79ea33896e278
linuxlinux>= 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 374915dfc932adf57712df3be010667fd1190e3c374915dfc932adf57712df3be010667fd1190e3c
linuxlinux>= 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 6c75fed55080014545f262b7055081cec4768b206c75fed55080014545f262b7055081cec4768b20
linuxlinux>= 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 27880b0b0d35ad1c98863d09788254e36f87496827880b0b0d35ad1c98863d09788254e36f874968
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.249-15.10.249-1
linuxlinux_kernel>= 0 < 6.1.162-16.1.162-1
linuxlinux_kernel>= 0 < 6.12.69-16.12.69-1
linuxlinux_kernel>= 0 < 6.18.8-16.18.8-1
linuxlinux_kernel>= 4.11 < 5.10.2495.10.249
linuxlinux_kernel>= 5.11 < 5.15.1995.15.199
linuxlinux_kernel>= 5.16 < 6.1.1626.1.162
linuxlinux_kernel>= 6.13 < 6.18.86.18.8
linuxlinux_kernel>= 6.2 < 6.6.1226.6.122
linuxlinux_kernel>= 6.7 < 6.12.686.12.68
ubuntulinux
ubuntulinux-aws
ubuntulinux-aws-fips
ubuntulinux-azure

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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