net/sched: act_ife: avoid possible NULL deref (Linux Linux)

CVE-2026-23064
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.14 % · percentile 4 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

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: <TASK> 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

Weaknesses (CWE)

  • CWE-476 — NULL Pointer Dereference

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 4ef2c77851676b7ed106f0c47755bee9eeec9a40 ; affected 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < dd9442aedbeae87c44cc64c0ee41abd296dc008b ; affected 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 1440d749fe49c8665da6f744323b1671d25a56a0 ; affected 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 03710cebfc0bcfe247a9e04381e79ea33896e278 ; affected 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 374915dfc932adf57712df3be010667fd1190e3c ; affected 295a6e06d21e1f469c9f38b00125a13b60ad4e7c < 6c75fed55080014545f262b7055081cec4768b20
Linux · Linuxaffected 4.11 ; unaffected 0 < 4.11 ; unaffected 5.10.249 ≤ 5.10.* ; unaffected 5.15.199 ≤ 5.15.* ; unaffected 6.1.162 ≤ 6.1.* ; unaffected 6.6.122 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD