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CVE-2026-46252— regulator: core: fix locking in regulator_resolve_supply() error path

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.

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regulator core模块在regulator_resolve_supply错误路径中未正确持有regulator_list_mutex锁，可能导致锁依赖警告。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.09% · P0

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 36a1f1b6ddc6d1442424e29548e790633ca39c7b< e77357dc2293283fc08a485b1e2e571d91d02622 affected
36a1f1b6ddc6d1442424e29548e790633ca39c7b< a8a2eab1166bc33ee38ca371cff425bdb5681e47 affected
36a1f1b6ddc6d1442424e29548e790633ca39c7b< 60747114fd2a38739130b715e7b2d40ce848f0be affected
36a1f1b6ddc6d1442424e29548e790633ca39c7b< c84860dac7af7dc3c3e3c9ae86d65e222c2f3b0c affected
36a1f1b6ddc6d1442424e29548e790633ca39c7b< 3b7fffd7a8984a1c009f668765ee7631fd6b87c8 affected
36a1f1b6ddc6d1442424e29548e790633ca39c7b< bde74af8d4466213007bdd42cc85fa72c861dea7 affected
36a1f1b6ddc6d1442424e29548e790633ca39c7b< c66e0db0f37290b53c57994f998bb55590364fd0 affected
36a1f1b6ddc6d1442424e29548e790633ca39c7b< 497330b203d2c59c5ff3fa4c34d14494d7203bc3 affected
… +10 more rows
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I. Basic Information for CVE-2026-46252

Vulnerability Information
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Vulnerability Title
regulator: core: fix locking in regulator_resolve_supply() error path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: regulator: core: fix locking in regulator_resolve_supply() error path If late enabling of a supply regulator fails in regulator_resolve_supply(), the code currently triggers a lockdep warning: WARNING: drivers/regulator/core.c:2649 at _regulator_put+0x80/0xa0, CPU#6: kworker/u32:4/596 ... Call trace: _regulator_put+0x80/0xa0 (P) regulator_resolve_supply+0x7cc/0xbe0 regulator_register_resolve_supply+0x28/0xb8 as the regulator_list_mutex must be held when calling _regulator_put(). To solve this, simply switch to using regulator_put(). While at it, we should also make sure that no concurrent access happens to our rdev while we clear out the supply pointer. Add appropriate locking to ensure that. While the code in question will be removed altogether in a follow-up commit, I believe it is still beneficial to have this corrected before removal for future reference.
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
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regulator core模块在regulator_resolve_supply错误路径中未正确持有regulator_list_mutex锁，可能导致锁依赖警告。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 36a1f1b6ddc6d1442424e29548e790633ca39c7b ~ e77357dc2293283fc08a485b1e2e571d91d02622 -
Linux Linux 4.2 -

II. Public POCs for CVE-2026-46252

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III. Intelligence Information for CVE-2026-46252

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Patches & Fixes for CVE-2026-46252 (8)

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-2026-46246 power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
CVE-2026-46247 clk: qcom: gfx3d: add parent to parent request 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-2026-46248 wifi: ath12k: clear stale link mapping of ahvif->links_map
CVE-2026-46249 octeontx2-af: Fix PF driver crash with kexec kernel booting

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-2026-46252

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