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CVE-2026-23126— netdevsim: fix a race issue related to the operation on bpf_bound_progs list

EPSS 0.01% · P3
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I. Basic Information for CVE-2026-23126

Vulnerability Information
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Vulnerability Title
netdevsim: fix a race issue related to the operation on bpf_bound_progs list
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netdevsim: fix a race issue related to the operation on bpf_bound_progs list The netdevsim driver lacks a protection mechanism for operations on the bpf_bound_progs list. When the nsim_bpf_create_prog() performs list_add_tail, it is possible that nsim_bpf_destroy_prog() is simultaneously performs list_del. Concurrent operations on the list may lead to list corruption and trigger a kernel crash as follows: [ 417.290971] kernel BUG at lib/list_debug.c:62! [ 417.290983] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 417.290992] CPU: 10 PID: 168 Comm: kworker/10:1 Kdump: loaded Not tainted 6.19.0-rc5 #1 [ 417.291003] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 417.291007] Workqueue: events bpf_prog_free_deferred [ 417.291021] RIP: 0010:__list_del_entry_valid_or_report+0xa7/0xc0 [ 417.291034] Code: a8 ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 48 a1 eb ae e8 ed fb a8 ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 80 a1 eb ae e8 d9 fb a8 ff <0f> 0b 48 89 d1 48 c7 c7 d0 a1 eb ae 48 89 f2 48 89 c6 e8 c2 fb a8 [ 417.291040] RSP: 0018:ffffb16a40807df8 EFLAGS: 00010246 [ 417.291046] RAX: 000000000000006d RBX: ffff8e589866f500 RCX: 0000000000000000 [ 417.291051] RDX: 0000000000000000 RSI: ffff8e59f7b23180 RDI: ffff8e59f7b23180 [ 417.291055] RBP: ffffb16a412c9000 R08: 0000000000000000 R09: 0000000000000003 [ 417.291059] R10: ffffb16a40807c80 R11: ffffffffaf9edce8 R12: ffff8e594427ac20 [ 417.291063] R13: ffff8e59f7b44780 R14: ffff8e58800b7a05 R15: 0000000000000000 [ 417.291074] FS: 0000000000000000(0000) GS:ffff8e59f7b00000(0000) knlGS:0000000000000000 [ 417.291079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 417.291083] CR2: 00007fc4083efe08 CR3: 00000001c3626006 CR4: 0000000000770ee0 [ 417.291088] PKRU: 55555554 [ 417.291091] Call Trace: [ 417.291096] <TASK> [ 417.291103] nsim_bpf_destroy_prog+0x31/0x80 [netdevsim] [ 417.291154] __bpf_prog_offload_destroy+0x2a/0x80 [ 417.291163] bpf_prog_dev_bound_destroy+0x6f/0xb0 [ 417.291171] bpf_prog_free_deferred+0x18e/0x1a0 [ 417.291178] process_one_work+0x18a/0x3a0 [ 417.291188] worker_thread+0x27b/0x3a0 [ 417.291197] ? __pfx_worker_thread+0x10/0x10 [ 417.291207] kthread+0xe5/0x120 [ 417.291214] ? __pfx_kthread+0x10/0x10 [ 417.291221] ret_from_fork+0x31/0x50 [ 417.291230] ? __pfx_kthread+0x10/0x10 [ 417.291236] ret_from_fork_asm+0x1a/0x30 [ 417.291246] </TASK> Add a mutex lock, to prevent simultaneous addition and deletion operations on the list.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于netdevsim中对bpf_bound_progs列表操作缺乏保护，可能导致列表损坏和内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 31d3ad832948c75139b0e5b653912f7898a1d5d5 ~ 3f560cfc7706029294132482fff5d1bc7884b70d -
LinuxLinux 4.16 -

II. Public POCs for CVE-2026-23126

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III. Intelligence Information for CVE-2026-23126

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Same Patch Batch · Linux · 2026-02-14 · 108 CVEs total

CVE-2026-231938.8 HIGHscsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
CVE-2026-231728.4 HIGHnet: wwan: t7xx: fix potential skb->frags overflow in RX path
CVE-2026-232097.8 HIGHmacvlan: fix error recovery in macvlan_common_newlink()
CVE-2026-231787.8 HIGHHID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()
CVE-2026-231847.8 HIGHbinder: fix UAF in binder_netlink_report()
CVE-2026-231857.8 HIGHwifi: iwlwifi: mld: cancel mlo_scan_start_wk
CVE-2026-231717.8 HIGHbonding: fix use-after-free due to enslave fail after slave array update
CVE-2026-231697.8 HIGHmptcp: fix race in mptcp_pm_nl_flush_addrs_doit()
CVE-2026-231917.8 HIGHALSA: aloop: Fix racy access at PCM trigger
CVE-2026-231927.8 HIGHlinkwatch: use __dev_put() in callers to prevent UAF
CVE-2026-231987.8 HIGHKVM: Don't clobber irqfd routing type when deassigning irqfd
CVE-2026-231487.5 HIGHnvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
CVE-2026-231367.5 HIGHlibceph: reset sparse-read state in osd_fault()
CVE-2026-231397.5 HIGHnetfilter: nf_conncount: update last_gc only when GC has been performed
CVE-2026-231617.3 HIGHmm/shmem, swap: fix race of truncate and swap entry split
CVE-2026-232047.1 HIGHnet/sched: cls_u32: use skb_header_pointer_careful()
CVE-2026-231957.0 HIGHcgroup/dmem: avoid pool UAF
CVE-2026-231807.0 HIGHdpaa2-switch: add bounds check for if_id in IRQ handler
CVE-2026-231757.0 HIGHnet: cpsw: Execute ndo_set_rx_mode callback in a work queue
CVE-2026-23141btrfs: send: check for inline extents in range_is_hole_in_parent()

Showing top 20 of 108 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23126

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