CVE-2026-97599— ieee802154: hwsim: serialize pib updates to fix double-free
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Linux 内核中，已修复以下漏洞： ieee802154: hwsim: 序列化 PIB 更新以修复双重释放问题 对 执行了未加锁的“读-替换-释放”操作： 该代码假设持有 RTNL 锁，但 操作并不总是在持有 RTNL 锁的情况下被调用。例如，mac802154 的扫描工作线程通过 更改信道时并未持有 RTNL 锁。这可能导致在同一 phy 上，一个持有 RTNL 锁的更新与另一个未持有 RTNL 锁的更新发生竞态条件：两者可能读取到相同的 ，并都调用 对其进行释放，从而造成双重释放。在使用 SLUB 每
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f25da51fdc381ca2863248c7060b3662632f0872< e3b4681197aa026bd2d79358de5a3d62b76b04b9 |
affected |
f25da51fdc381ca2863248c7060b3662632f0872< 9973b3a67a7592a780ea12b08334539a900deec1 |
affected | ||
f25da51fdc381ca2863248c7060b3662632f0872< d3b8f264ce09573aededd0a97dc41c8147797d8f |
affected | ||
f25da51fdc381ca2863248c7060b3662632f0872< db6442deecb1f13aeaf4f9d77746ea7555630fb3 |
affected | ||
f25da51fdc381ca2863248c7060b3662632f0872< 979d5b8de8ed4e1f997aef12da5694b99be7b871 |
affected | ||
4.19 |
affected | ||
< 4.19 |
unaffected | ||
6.6.158≤ 6.6.* |
unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2026-97599
Vulnerability Information
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Vulnerability Title
ieee802154: hwsim: serialize pib updates to fix double-free
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ieee802154: hwsim: serialize pib updates to fix double-free
hwsim_update_pib() does an unserialized read-swap-free of phy->pib:
pib_old = rtnl_dereference(phy->pib);
...
rcu_assign_pointer(phy->pib, pib);
kfree_rcu(pib_old, rcu);
It assumes the RTNL is held, but ->set_channel is not always called
under it: the mac802154 scan worker changes channels via
drv_set_channel() without the RTNL. Such an update can race an
RTNL-held one on the same phy; both read the same pib_old and both
kfree_rcu() it, double-freeing the object. With SLUB percpu sheaves
batching kfree_rcu(), this surfaces as a KASAN invalid-free in
rcu_free_sheaf().
struct hwsim_phy has no lock for pib. Add one and make the swap atomic
with rcu_replace_pointer() under it, dropping the misleading
rtnl_dereference().
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-97599
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-97599 (5)
Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total
| CVE-2026-100075 | 9.8 CRITICAL | RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters |
| CVE-2026-97957 | 8.8 HIGH | net: hinic: fix mailbox segment buffer overflow |
| CVE-2026-97527 | 8.8 HIGH | scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock |
| CVE-2026-97528 | 8.8 HIGH | scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error |
| CVE-2026-97555 | 8.8 HIGH | smb: client: fix heap overflow in DACL owner/group rewrite |
| CVE-2026-98115 | 8.8 HIGH | ksmbd: safely drain sessions during logoff |
| CVE-2026-97525 | 8.2 HIGH | x86/mm/pat: Allocate split page tables as kernel page tables |
| CVE-2026-97573 | 8.1 HIGH | bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset() |
| CVE-2026-97570 | 8.1 HIGH | bnxt_en: Bound SW TPA IDs to prevent crashes |
| CVE-2026-98070 | 8.1 HIGH | net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks() |
| CVE-2026-98069 | 8.1 HIGH | net/rds: acquire the fastpath locks in rds_conn_shutdown() |
| CVE-2026-98130 | 8.1 HIGH | sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START |
| CVE-2026-98116 | 7.8 HIGH | ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF |
| CVE-2026-97903 | 7.8 HIGH | exit: hold a reference to thread_pid across proc_flush_pid |
| CVE-2026-97548 | 7.8 HIGH | xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions |
| CVE-2026-97611 | 7.8 HIGH | net: openvswitch: fix use-after-free of the flow table mask array |
| CVE-2026-97612 | 7.8 HIGH | net: mpls: clear inner_protocol when the last label is popped |
| CVE-2026-98073 | 7.8 HIGH | net: Remove conflicting altnames for dying netns in __dev_change_net_namespace(). |
| CVE-2026-97602 | 7.8 HIGH | inet: frags: invalidate queues before flushing them |
| CVE-2026-97577 | 7.8 HIGH | media: verisilicon: rockchip: reject AV1 frames exceeding the tile capacity |
Showing top 20 of 372 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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Same vendor: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
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veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
V. Comments for CVE-2026-97599
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