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CVE-2023-53558— rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()

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，该漏洞源于在持有自旋锁时调用可能休眠的函数，可能导致内核崩溃。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.14% · P3 Updated May 13, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

Vendor	Product	Version Range	Status
Linux	Linux	`ab97152f88a4d580b89f0b7cc3028ffac438216f< 9027d69221ff96e1356f070f7feb2ff989ae7388`	affected
		`ab97152f88a4d580b89f0b7cc3028ffac438216f< ea9b81c7d9104040b46a84d2303045de267f5557`	affected
		`ab97152f88a4d580b89f0b7cc3028ffac438216f< 5fc8cbe4cf0fd34ded8045c385790c3bf04f6785`	affected
		`5.17`	affected
		`< 5.17`	unaffected
		`6.1.42≤ 6.1.*`	unaffected
		`6.4.7≤ 6.4.*`	unaffected
		`6.5≤ *`	unaffected

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I. Basic Information for CVE-2023-53558

Vulnerability Information

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Vulnerability Title

rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic() pr_info() is called with rtp->cbs_gbl_lock spin lock locked. Because pr_info() calls printk() that might sleep, this will result in BUG like below: [ 0.206455] cblist_init_generic: Setting adjustable number of callback queues. [ 0.206463] [ 0.206464] ============================= [ 0.206464] [ BUG: Invalid wait context ] [ 0.206465] 5.19.0-00428-g9de1f9c8ca51 #5 Not tainted [ 0.206466] ----------------------------- [ 0.206466] swapper/0/1 is trying to lock: [ 0.206467] ffffffffa0167a58 (&port_lock_key){....}-{3:3}, at: serial8250_console_write+0x327/0x4a0 [ 0.206473] other info that might help us debug this: [ 0.206473] context-{5:5} [ 0.206474] 3 locks held by swapper/0/1: [ 0.206474] #0: ffffffff9eb597e0 (rcu_tasks.cbs_gbl_lock){....}-{2:2}, at: cblist_init_generic.constprop.0+0x14/0x1f0 [ 0.206478] #1: ffffffff9eb579c0 (console_lock){+.+.}-{0:0}, at: _printk+0x63/0x7e [ 0.206482] #2: ffffffff9ea77780 (console_owner){....}-{0:0}, at: console_emit_next_record.constprop.0+0x111/0x330 [ 0.206485] stack backtrace: [ 0.206486] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-00428-g9de1f9c8ca51 #5 [ 0.206488] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014 [ 0.206489] Call Trace: [ 0.206490] <TASK> [ 0.206491] dump_stack_lvl+0x6a/0x9f [ 0.206493] __lock_acquire.cold+0x2d7/0x2fe [ 0.206496] ? stack_trace_save+0x46/0x70 [ 0.206497] lock_acquire+0xd1/0x2f0 [ 0.206499] ? serial8250_console_write+0x327/0x4a0 [ 0.206500] ? __lock_acquire+0x5c7/0x2720 [ 0.206502] _raw_spin_lock_irqsave+0x3d/0x90 [ 0.206504] ? serial8250_console_write+0x327/0x4a0 [ 0.206506] serial8250_console_write+0x327/0x4a0 [ 0.206508] console_emit_next_record.constprop.0+0x180/0x330 [ 0.206511] console_unlock+0xf7/0x1f0 [ 0.206512] vprintk_emit+0xf7/0x330 [ 0.206514] _printk+0x63/0x7e [ 0.206516] cblist_init_generic.constprop.0.cold+0x24/0x32 [ 0.206518] rcu_init_tasks_generic+0x5/0xd9 [ 0.206522] kernel_init_freeable+0x15b/0x2a2 [ 0.206523] ? rest_init+0x160/0x160 [ 0.206526] kernel_init+0x11/0x120 [ 0.206527] ret_from_fork+0x1f/0x30 [ 0.206530] </TASK> [ 0.207018] cblist_init_generic: Setting shift to 1 and lim to 1. This patch moves pr_info() so that it is called without rtp->cbs_gbl_lock locked.

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

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	ab97152f88a4d580b89f0b7cc3028ffac438216f ~ 9027d69221ff96e1356f070f7feb2ff989ae7388	-
Linux	Linux	5.17	-

II. Public POCs for CVE-2023-53558

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2023-53558

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https://www.cve.org/CVERecord?id=CVE-2023-53558

Same Patch Batch · Linux · 2025-10-04 · 144 CVEs total

CVE-2025-39932	9.8 CRITICAL	smb: client: let smbd_destroy() call disable_work_sync(&info->post_send_credits_work)
CVE-2025-39948	9.8 CRITICAL	ice: fix Rx page leak on multi-buffer frames
CVE-2025-39946	9.8 CRITICAL	tls: make sure to abort the stream if headers are bogus
CVE-2025-39933	9.4 CRITICAL	smb: client: let recv_done verify data_offset, data_length and remaining_data_length
CVE-2025-39943	9.4 CRITICAL	ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer
CVE-2023-53600	9.1 CRITICAL	tunnels: fix kasan splat when generating ipv4 pmtu error
CVE-2023-53615	8.8 HIGH	scsi: qla2xxx: Fix deletion race condition
CVE-2025-39952	8.8 HIGH	wifi: wilc1000: avoid buffer overflow in WID string configuration
CVE-2023-53589	8.8 HIGH	wifi: iwlwifi: mvm: don't trust firmware n_channels
CVE-2023-53586	8.8 HIGH	scsi: target: Fix multiple LUN_RESET handling
CVE-2022-50493	8.8 HIGH	scsi: qla2xxx: Fix crash when I/O abort times out
CVE-2023-53598	8.4 HIGH	bus: mhi: host: Range check CHDBOFF and ERDBOFF
CVE-2023-53566	7.8 HIGH	netfilter: nft_set_rbtree: fix null deref on element insertion
CVE-2023-53536	7.8 HIGH	blk-crypto: make blk_crypto_evict_key() more robust
CVE-2023-53560	7.8 HIGH	tracing/histograms: Add histograms to hist_vars if they have referenced variables
CVE-2023-53559	7.8 HIGH	ip_vti: fix potential slab-use-after-free in decode_session6
CVE-2023-53557	7.8 HIGH	fprobe: Release rethook after the ftrace_ops is unregistered
CVE-2023-53537	7.8 HIGH	f2fs: fix to avoid use-after-free for cached IPU bio
CVE-2023-53539	7.8 HIGH	RDMA/rxe: Fix incomplete state save in rxe_requester
CVE-2023-53545	7.8 HIGH	drm/amdgpu: unmap and remove csa_va properly

Showing top 20 of 144 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux

V. Comments for CVE-2023-53558

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

CVE-2023-53558— rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 8

I. Basic Information for CVE-2023-53558

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2023-53558

III. Intelligence Information for CVE-2023-53558

Same Patch Batch · Linux · 2025-10-04 · 144 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2023-53558

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