Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1325 CNY

100%
Buy Us a Coffee

CVE-2026-46270— power: supply: rt9455: Fix use-after-free in power_supply_changed()

CVSS 8.4 · High EPSS 0.13% · P3

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxe86d69dd786e94046b8f5be7df1b9a8226a40b2a< d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfcaffected
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< 62d753b916bd500bb269b7078cdab73198ab4718affected
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< a39f8f06216f73ef40e71e2fe4ad071964c1fd36affected
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< af261f218a7606f93d2c786353d60bb4feb56ef0affected
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< 2178dc65d45e2f7bcaa8af8d80d100419bdab251affected
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< 64e15155095f39f4dec9b4659da1238ef8fc54d4affected
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< 721449a15170fc5f028a7576d7f65b9f60d53482affected
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< e2febe375e5ea5afed92f4cd9711bde8f24ee6d2affected
… +10 more rows
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-46270

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
power: supply: rt9455: Fix use-after-free in power_supply_changed()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `power_supply` handle, means that the `power_supply` 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 `power_supply` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `power_supply_changed()` with a freed `power_supply` handle. Which usually crashes the system or otherwise silently corrupts the memory... Note that there is a similar situation which can also happen during `probe()`; the possibility of an interrupt firing _before_ registering the `power_supply` handle. This would then lead to the nasty situation of using the `power_supply` handle *uninitialized* in `power_supply_changed()`. Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `power_supply` handle.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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rt9455电源供应驱动中IRQ请求在power_supply分配之前，可能导致释放后重用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux e86d69dd786e94046b8f5be7df1b9a8226a40b2a ~ d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc -
LinuxLinux 4.2 -

II. Public POCs for CVE-2026-46270

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-46270

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-46270 (8)

Same Patch Batch · Linux · 2026-06-03 · 32 CVEs total

CVE-2026-462449.1 CRITICALnetfilter: nft_inner: Fix IPv6 inner_thoff desync
CVE-2026-462669.1 CRITICALinet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP
CVE-2026-462648.8 HIGHdrm/xe/pf: Fix sysfs initialization
CVE-2026-462738.6 HIGHibmveth: Disable GSO for packets with small MSS
CVE-2026-462518.4 HIGHbtrfs: fix block_group_tree dirty_list corruption
CVE-2026-462537.8 HIGHpstore/ram: fix buffer overflow in persistent_ram_save_old()
CVE-2026-462597.8 HIGHprocfs: fix missing RCU protection when reading real_parent in do_task_stat()
CVE-2026-462607.8 HIGHipv6: Fix out-of-bound access in fib6_add_rt2node().
CVE-2026-462637.8 HIGHdrm/amd/display: Fix out-of-bounds stream encoder index v3
CVE-2026-462717.8 HIGHwifi: ath12k: do WoW offloads only on primary link
CVE-2026-462657.5 HIGHRDMA/hns: Fix WQ_MEM_RECLAIM warning
CVE-2026-462507.3 HIGHMIPS: Work around LLVM bug when gp is used as global register variable
CVE-2026-46246power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
CVE-2026-46247clk: qcom: gfx3d: add parent to parent request map
CVE-2026-46245drm/amd/display: Fix dc_link NULL handling in HPD init
CVE-2025-71314drm/panthor: Recover from panthor_gpu_flush_caches() failures
CVE-2026-46248wifi: ath12k: clear stale link mapping of ahvif->links_map
CVE-2025-71313PCI: endpoint: Add missing NULL check for alloc_workqueue()
CVE-2026-46249octeontx2-af: Fix PF driver crash with kexec kernel booting
CVE-2026-46257clocksource/drivers/timer-sp804: Fix an Oops when read_current_timer is called on ARM32 pl

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46270

No comments yet

Leave a comment