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CVE-2026-53352— signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()

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基金会开源的一款操作系统内核。 Linux kernel 3.0版本存在安全漏洞，该漏洞源于在zap_other_threads()函数中未清除调用线程的JOBCTL_PENDING_MASK标志，导致竞争条件，可能触发内核警告。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.10% · P1

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 39efa3ef3a376a4e53de2f82fc91182459d34200< 2b32b2fb241435145ea199efac024540759d2495 affected
39efa3ef3a376a4e53de2f82fc91182459d34200< 391ebe74456a0f1d60b3ba4a8a64d9f44c1728fe affected
39efa3ef3a376a4e53de2f82fc91182459d34200< f8d720bc2e35d568c18be0644e92a468de428370 affected
39efa3ef3a376a4e53de2f82fc91182459d34200< f4aae11abb449dc536269705d0419ec69480faa9 affected
39efa3ef3a376a4e53de2f82fc91182459d34200< 76aebd9ef20078719dfd6282d3b06c27e900a65a affected
39efa3ef3a376a4e53de2f82fc91182459d34200< 8c046f36222c6ce1e0daef2c45c891c72602f8a1 affected
39efa3ef3a376a4e53de2f82fc91182459d34200< dfcd0ba14769d94d76ac9d9814b85e7fcacd4e29 affected
39efa3ef3a376a4e53de2f82fc91182459d34200< 90918794a4e2c3b440f8fcf3847765a8b1d81b25 affected
… +10 more rows
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I. Basic Information for CVE-2026-53352

Vulnerability Information
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Vulnerability Title
signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads() When a multi-threaded process receives a stop signal (e.g., SIGSTOP), do_signal_stop() sets JOBCTL_STOP_PENDING and JOBCTL_STOP_CONSUME on all threads and sets signal->group_stop_count to the number of threads. If one of the threads concurrently calls execve(), de_thread() invokes zap_other_threads() to kill all other threads. zap_other_threads() aborts the pending group stop by resetting signal->group_stop_count to 0 and clears the JOBCTL_PENDING_MASK for all other threads. However, it fails to clear the job control flags for the calling thread. When execve() completes, the calling thread returns to user mode and checks for pending signals. Seeing the stale JOBCTL_STOP_PENDING flag, it calls do_signal_stop(), which invokes task_participate_group_stop(). Since JOBCTL_STOP_CONSUME is still set, it attempts to decrement the already-zero signal->group_stop_count, triggering a warning: sig->group_stop_count == 0 WARNING: CPU: 1 PID: 6475 at kernel/signal.c:373 task_participate_group_stop+0x215/0x2d0 Call Trace: <TASK> do_signal_stop+0x3be/0x5c0 kernel/signal.c:2619 get_signal+0xa8c/0x1330 kernel/signal.c:2884 arch_do_signal_or_restart+0xbc/0x840 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x8c/0x4d0 kernel/entry/common.c:98 do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f </TASK> Fix this race condition by clearing the JOBCTL_PENDING_MASK for the calling thread in zap_other_threads(), ensuring it does not retain any stale job control state after the thread group is destroyed. This aligns with other functions that tear down a thread group and abort group stops, such as zap_process() and complete_signal(), which correctly clear these flags for all threads including the current one.
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基金会开源的一款操作系统内核。 Linux kernel 3.0版本存在安全漏洞，该漏洞源于在zap_other_threads()函数中未清除调用线程的JOBCTL_PENDING_MASK标志，导致竞争条件，可能触发内核警告。
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 39efa3ef3a376a4e53de2f82fc91182459d34200 ~ 2b32b2fb241435145ea199efac024540759d2495 -
Linux Linux 3.0 -

II. Public POCs for CVE-2026-53352

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III. Intelligence Information for CVE-2026-53352

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Patches & Fixes for CVE-2026-53352 (8)

Same Patch Batch · Linux · 2026-07-01 · 31 CVEs total

CVE-2026-53355 9.8 CRITICAL net: rds: clear i_sends on setup unwind
CVE-2026-53354 8.8 HIGH arm64: errata: Mitigate TLBI errata on various Arm CPUs
CVE-2026-53341 7.8 HIGH fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh()
CVE-2026-53356 7.8 HIGH drm/i915/gem: Fix phys BO pread/pwrite with offset
CVE-2026-53329 7.0 HIGH drm/amd/display: Use krealloc_array() in dal_vector_reserve()
CVE-2026-53343 ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
CVE-2026-53326 debugobjects: Don't call fill_pool() in early boot hardirq context
CVE-2026-53328 sched_ext: Don't warn on NULL cgrp_moving_from in scx_cgroup_move_task()
CVE-2026-53353 hsr: Remove WARN_ONCE() in hsr_addr_is_self().
CVE-2026-53330 drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()
CVE-2026-53351 riscv/ptrace: Use USER_REGSET_NOTE_TYPE for REGSET_CFI
CVE-2026-53350 ASoC: wm_adsp: Fix NULL dereference when removing firmware controls
CVE-2026-53348 ASoC: SDCA: fix NULL pointer dereference in sdca_dev_unregister_functions
CVE-2026-53349 netfilter: nf_conntrack: destroy stale expectfn expectations on unregister
CVE-2026-53346 rust: arm64: set uwtable llvm module flag for CONFIG_UNWIND_TABLES
CVE-2026-53347 drm/virtio: Fix driver removal with disabled KMS
CVE-2026-53344 pinctrl: mcp23s08: Initialize mcp->dev and mcp->addr before regmap init
CVE-2026-53345 KVM: Don't WARN if memory is dirtied without a vCPU when the VM is dying
CVE-2026-53342 arm64: mm: call pagetable dtor when freeing hot-removed page tables
CVE-2026-53327 debugobjects: Do not fill_pool() if pi_blocked_on

Showing top 20 of 31 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53352

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