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CVE-2025-38424— perf: Fix sample vs do_exit()

EPSS 0.03% · P7
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I. Basic Information for CVE-2025-38424

Vulnerability Information
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Vulnerability Title
perf: Fix sample vs do_exit()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: perf: Fix sample vs do_exit() Baisheng Gao reported an ARM64 crash, which Mark decoded as being a synchronous external abort -- most likely due to trying to access MMIO in bad ways. The crash further shows perf trying to do a user stack sample while in exit_mmap()'s tlb_finish_mmu() -- i.e. while tearing down the address space it is trying to access. It turns out that we stop perf after we tear down the userspace mm; a receipie for disaster, since perf likes to access userspace for various reasons. Flip this order by moving up where we stop perf in do_exit(). Additionally, harden PERF_SAMPLE_CALLCHAIN and PERF_SAMPLE_STACK_USER to abort when the current task does not have an mm (exit_mm() makes sure to set current->mm = NULL; before commencing with the actual teardown). Such that CPU wide events don't trip on this same problem.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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perf模块在do_exit期间尝试用户栈采样，可能导致内存访问错误。
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 c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 ~ 7b8f3c72175c6a63a95cf2e219f8b78e2baad34e -
LinuxLinux 3.7 -

II. Public POCs for CVE-2025-38424

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III. Intelligence Information for CVE-2025-38424

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Same Patch Batch · Linux · 2025-07-25 · 114 CVEs total

CVE-2025-38426drm/amdgpu: Add basic validation for RAS header
CVE-2025-38440net/mlx5e: Fix race between DIM disable and net_dim()
CVE-2025-38438ASoC: SOF: Intel: hda: Use devm_kstrdup() to avoid memleak.
CVE-2025-38437ksmbd: fix potential use-after-free in oplock/lease break ack
CVE-2025-38436drm/scheduler: signal scheduled fence when kill job
CVE-2025-38435riscv: vector: Fix context save/restore with xtheadvector
CVE-2025-38434Revert "riscv: Define TASK_SIZE_MAX for __access_ok()"
CVE-2025-38433riscv: fix runtime constant support for nommu kernels
CVE-2025-38432net: netpoll: Initialize UDP checksum field before checksumming
CVE-2025-38431smb: client: fix regression with native SMB symlinks
CVE-2025-38430nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request
CVE-2025-38429bus: mhi: ep: Update read pointer only after buffer is written
CVE-2025-38428Input: ims-pcu - check record size in ims_pcu_flash_firmware()
CVE-2025-38427video: screen_info: Relocate framebuffers behind PCI bridges
CVE-2025-38425i2c: tegra: check msg length in SMBUS block read
CVE-2025-38413virtio-net: xsk: rx: fix the frame's length check
CVE-2025-38416NFC: nci: uart: Set tty->disc_data only in success path
CVE-2025-38415Squashfs: check return result of sb_min_blocksize
CVE-2025-38414wifi: ath12k: fix GCC_GCC_PCIE_HOT_RST definition for WCN7850
CVE-2025-38417ice: fix eswitch code memory leak in reset scenario

Showing top 20 of 114 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38424

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