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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-22986— gpiolib: fix race condition for gdev->srcu

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gdev->srcu存在竞争条件，可能导致崩溃。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.10% · P1

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 47d8b4c1d868148c8fb51b785a89e58ca2d02c4d< 1ef731547dfd73f466c5d0e52801b97191d4647f affected
47d8b4c1d868148c8fb51b785a89e58ca2d02c4d< fb674c8f1a5d8dd3113a7326030f963fa2d79c02 affected
47d8b4c1d868148c8fb51b785a89e58ca2d02c4d< a7ac22d53d0990152b108c3f4fe30df45fcb0181 affected
6.9 affected
< 6.9 unaffected
6.12.83≤ 6.12.* unaffected
6.18.6≤ 6.18.* unaffected
6.19≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-22986

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
gpiolib: fix race condition for gdev->srcu
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: gpiolib: fix race condition for gdev->srcu If two drivers were calling gpiochip_add_data_with_key(), one may be traversing the srcu-protected list in gpio_name_to_desc(), meanwhile other has just added its gdev in gpiodev_add_to_list_unlocked(). This creates a non-mutexed and non-protected timeframe, when one instance is dereferencing and using &gdev->srcu, before the other has initialized it, resulting in crash: [ 4.935481] Unable to handle kernel paging request at virtual address ffff800272bcc000 [ 4.943396] Mem abort info: [ 4.943400] ESR = 0x0000000096000005 [ 4.943403] EC = 0x25: DABT (current EL), IL = 32 bits [ 4.943407] SET = 0, FnV = 0 [ 4.943410] EA = 0, S1PTW = 0 [ 4.943413] FSC = 0x05: level 1 translation fault [ 4.943416] Data abort info: [ 4.943418] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 [ 4.946220] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 4.955261] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 4.955268] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000038e6c000 [ 4.961449] [ffff800272bcc000] pgd=0000000000000000 [ 4.969203] , p4d=1000000039739003 [ 4.979730] , pud=0000000000000000 [ 4.980210] phandle (CPU): 0x0000005e, phandle (BE): 0x5e000000 for node "reset" [ 4.991736] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP ... [ 5.121359] pc : __srcu_read_lock+0x44/0x98 [ 5.131091] lr : gpio_name_to_desc+0x60/0x1a0 [ 5.153671] sp : ffff8000833bb430 [ 5.298440] [ 5.298443] Call trace: [ 5.298445] __srcu_read_lock+0x44/0x98 [ 5.309484] gpio_name_to_desc+0x60/0x1a0 [ 5.320692] gpiochip_add_data_with_key+0x488/0xf00 5.946419] ---[ end trace 0000000000000000 ]--- Move initialization code for gdev fields before it is added to gpio_devices, with adjacent initialization code. Adjust goto statements to reflect modified order of operations [Bartosz: fixed a build issue, removed stray newline]
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gdev->srcu存在竞争条件，可能导致崩溃。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 47d8b4c1d868148c8fb51b785a89e58ca2d02c4d ~ 1ef731547dfd73f466c5d0e52801b97191d4647f -
Linux Linux 6.9 -

II. Public POCs for CVE-2026-22986

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-22986

请登录查看更多情报信息。

Same Patch Batch · Linux · 2026-01-23 · 34 CVEs total

CVE-2026-22984 9.8 CRITICAL libceph: prevent potential out-of-bounds reads in handle_auth_done()
CVE-2025-71159 9.8 CRITICAL btrfs: fix use-after-free warning in btrfs_get_or_create_delayed_node()
CVE-2025-71145 7.8 HIGH usb: phy: isp1301: fix non-OF device reference imbalance
CVE-2026-22980 7.8 HIGH nfsd: provide locking for v4_end_grace
CVE-2025-71155 7.8 HIGH KVM: s390: Fix gmap_helper_zap_one_page() again
CVE-2026-22988 7.8 HIGH arp: do not assume dev_hard_header() does not change skb->head
CVE-2025-71158 7.8 HIGH gpio: mpsse: ensure worker is torn down
CVE-2025-71146 7.5 HIGH netfilter: nf_conncount: fix leaked ct in error paths
CVE-2025-71150 7.5 HIGH ksmbd: Fix refcount leak when invalid session is found on session lookup
CVE-2026-22992 7.5 HIGH libceph: return the handler error from mon_handle_auth_done()
CVE-2026-22991 7.5 HIGH libceph: make free_choose_arg_map() resilient to partial allocation
CVE-2026-22990 7.5 HIGH libceph: replace overzealous BUG_ON in osdmap_apply_incremental()
CVE-2025-71161 7.5 HIGH dm-verity: disable recursive forward error correction
CVE-2026-22983 net: do not write to msg_get_inq in callee
CVE-2026-22995 ublk: fix use-after-free in ublk_partition_scan_work
CVE-2026-22985 idpf: Fix RSS LUT NULL pointer crash on early ethtool operations
CVE-2026-22987 net/sched: act_api: avoid dereferencing ERR_PTR in tcf_idrinfo_destroy
CVE-2026-22989 nfsd: check that server is running in unlock_filesystem
CVE-2026-22993 idpf: Fix RSS LUT NULL ptr issue after soft reset
CVE-2026-22994 bpf: Fix reference count leak in bpf_prog_test_run_xdp()

Showing top 20 of 34 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-22986

No comments yet

Leave a comment