CVE-2026-46246— power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1499 · Endpoint Denial of ServiceAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f8d7a3d21160a0cab4d15b81231f2a76b0fcee13< 9fab0120907e6965168e55b1e17cb9dfaf262b86 | affected |
f8d7a3d21160a0cab4d15b81231f2a76b0fcee13< 47abfc207ab02cf1297257e282e8048da63f0d08 | affected | ||
f8d7a3d21160a0cab4d15b81231f2a76b0fcee13< 48e0f68b50c344bb2d78d65dd98f93e41276ee00 | affected | ||
f8d7a3d21160a0cab4d15b81231f2a76b0fcee13< 23067259919663580c6f81801847cfc7bd54fd1f | affected | ||
6.7 | affected | ||
< 6.7 | unaffected | ||
6.12.75≤ 6.12.* | unaffected | ||
6.18.14≤ 6.18.* | unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2026-46246
Vulnerability Information
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Vulnerability Title
power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `extcon` handle, means that the `extcon` handle will be deallocated/unregistered _before_ the interrupt handler (since `devm_` naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just _after_ the `extcon` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `extcon_set_state_sync()` with a freed `extcon` handle. Which usually crashes the system or otherwise silently corrupts the memory... Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `extcon` handle.
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power supply pm8916_lbc模块中IRQ请求和extcon处理分配顺序不当，导致在移除时存在竞争条件，可能造成释放后重用。
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
II. Public POCs for CVE-2026-46246
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-46246 (4)
Same Patch Batch · Linux · 2026-06-03 · 32 CVEs total
| CVE-2026-46244 | 9.1 CRITICAL | netfilter: nft_inner: Fix IPv6 inner_thoff desync |
| CVE-2026-46266 | 9.1 CRITICAL | inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP |
| CVE-2026-46264 | 8.8 HIGH | drm/xe/pf: Fix sysfs initialization |
| CVE-2026-46273 | 8.6 HIGH | ibmveth: Disable GSO for packets with small MSS |
| CVE-2026-46251 | 8.4 HIGH | btrfs: fix block_group_tree dirty_list corruption |
| CVE-2026-46270 | 8.4 HIGH | power: supply: rt9455: Fix use-after-free in power_supply_changed() |
| CVE-2026-46253 | 7.8 HIGH | pstore/ram: fix buffer overflow in persistent_ram_save_old() |
| CVE-2026-46259 | 7.8 HIGH | procfs: fix missing RCU protection when reading real_parent in do_task_stat() |
| CVE-2026-46260 | 7.8 HIGH | ipv6: Fix out-of-bound access in fib6_add_rt2node(). |
| CVE-2026-46263 | 7.8 HIGH | drm/amd/display: Fix out-of-bounds stream encoder index v3 |
| CVE-2026-46271 | 7.8 HIGH | wifi: ath12k: do WoW offloads only on primary link |
| CVE-2026-46265 | 7.5 HIGH | RDMA/hns: Fix WQ_MEM_RECLAIM warning |
| CVE-2026-46250 | 7.3 HIGH | MIPS: Work around LLVM bug when gp is used as global register variable |
| CVE-2026-46247 | clk: qcom: gfx3d: add parent to parent request map | |
| CVE-2026-46248 | wifi: ath12k: clear stale link mapping of ahvif->links_map | |
| CVE-2026-46245 | drm/amd/display: Fix dc_link NULL handling in HPD init | |
| CVE-2025-71314 | drm/panthor: Recover from panthor_gpu_flush_caches() failures | |
| CVE-2025-71313 | PCI: endpoint: Add missing NULL check for alloc_workqueue() | |
| CVE-2026-46249 | octeontx2-af: Fix PF driver crash with kexec kernel booting | |
| CVE-2026-46252 | regulator: core: fix locking in regulator_resolve_supply() error path |
Showing top 20 of 32 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53277
KVM: arm64: Take the SRCU lock for page table walks in fault - CVE-2026-53276
Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer - CVE-2026-53275
ipv6: mcast: Fix use-after-free when processing MLD queries - CVE-2026-53274
net/smc: fix sleep-inside-lock in __smc_setsockopt() causing - CVE-2026-53273
tee: optee: prevent use-after-free when the client exits bef
Same vendor: Linux
- CVE-2026-53277
KVM: arm64: Take the SRCU lock for page table walks in fault - CVE-2026-53276
Bluetooth: ISO: Fix a use-after-free of the hci_conn pointer - CVE-2026-53275
ipv6: mcast: Fix use-after-free when processing MLD queries - CVE-2026-53274
net/smc: fix sleep-inside-lock in __smc_setsockopt() causing - CVE-2026-53273
tee: optee: prevent use-after-free when the client exits bef
V. Comments for CVE-2026-46246
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