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CVE-2023-53731— netlink: fix potential deadlock in netlink_set_err()

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netlink_set_err函数缺少IRQ安全保护，可能导致死锁。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.23% · P13

Affected Version Matrix 30

VendorProduct Version RangeStatus
Linux Linux 82b2ea5f904b3826934df4a00f3b8806272185f6< c09e8e3f7fd432984bf5422302b093d2371dfc48 affected
59fba11d649854134c75ad88c8adafa9304ac419< 4b9adb8d4a62ff7608d4a7d4eb42036a88f30980 affected
21df0c2e7d195de4a3c650de9361b3037fa6c59a< 8f6652ed2ad98fe6d13b903483d9257762ab2ec6 affected
1d6d43d4805da9b3fa0f5841e8b1083c89868f35< cde7b90e0539a3b11da377e463dfd2288a162dbf affected
1d482e666b8e74c7555dbdfbfb77205eeed3ff2d< a641240b7e071c5538dc0e7894ece833fce459dd affected
1d482e666b8e74c7555dbdfbfb77205eeed3ff2d< 61ffe8b1ee084e5c82a4e4bbf9e7b68e0c06e464 affected
1d482e666b8e74c7555dbdfbfb77205eeed3ff2d< eb8e27c8fa9397b4a7b181c48fa58157dbe9902e affected
1d482e666b8e74c7555dbdfbfb77205eeed3ff2d< 1556ba034b95cfd4f75ea93c1a2679ae0444bba1 affected
… +22 more rows
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I. Basic Information for CVE-2023-53731

Vulnerability Information
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Vulnerability Title
netlink: fix potential deadlock in netlink_set_err()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netlink: fix potential deadlock in netlink_set_err() syzbot reported a possible deadlock in netlink_set_err() [1] A similar issue was fixed in commit 1d482e666b8e ("netlink: disable IRQs for netlink_lock_table()") in netlink_lock_table() This patch adds IRQ safety to netlink_set_err() and __netlink_diag_dump() which were not covered by cited commit. [1] WARNING: possible irq lock inversion dependency detected 6.4.0-rc6-syzkaller-00240-g4e9f0ec38852 #0 Not tainted syz-executor.2/23011 just changed the state of lock: ffffffff8e1a7a58 (nl_table_lock){.+.?}-{2:2}, at: netlink_set_err+0x2e/0x3a0 net/netlink/af_netlink.c:1612 but this lock was taken by another, SOFTIRQ-safe lock in the past: (&local->queue_stop_reason_lock){..-.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(nl_table_lock); local_irq_disable(); lock(&local->queue_stop_reason_lock); lock(nl_table_lock); <Interrupt> lock(&local->queue_stop_reason_lock); *** DEADLOCK ***
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netlink_set_err函数缺少IRQ安全保护，可能导致死锁。
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 82b2ea5f904b3826934df4a00f3b8806272185f6 ~ c09e8e3f7fd432984bf5422302b093d2371dfc48 -
Linux Linux 5.13 -

II. Public POCs for CVE-2023-53731

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III. Intelligence Information for CVE-2023-53731

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Patches & Fixes for CVE-2023-53731 (1)

Same Patch Batch · Linux · 2025-10-22 · 67 CVEs total

CVE-2023-53711 8.2 HIGH NFS: Fix a potential data corruption
CVE-2023-53705 8.2 HIGH ipv6: Fix out-of-bounds access in ipv6_find_tlv()
CVE-2023-53713 7.8 HIGH arm64: sme: Use STR P to clear FFR context field in streaming SVE mode
CVE-2022-50581 7.8 HIGH hfs: fix OOB Read in __hfs_brec_find
CVE-2023-53718 7.8 HIGH ring-buffer: Do not swap cpu_buffer during resize process
CVE-2022-50569 7.8 HIGH xfrm: Update ipcomp_scratches with NULL when freed
CVE-2022-50570 7.8 HIGH platform/chrome: fix memory corruption in ioctl
CVE-2022-50567 7.8 HIGH fs: jfs: fix shift-out-of-bounds in dbAllocAG
CVE-2023-53707 7.8 HIGH drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1
CVE-2023-53692 7.8 HIGH ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline
CVE-2023-53729 7.8 HIGH soc: qcom: qmi_encdec: Restrict string length in decode
CVE-2023-53698 7.8 HIGH xsk: fix refcount underflow in error path
CVE-2023-53695 7.8 HIGH udf: Detect system inodes linked into directory hierarchy
CVE-2023-53726 7.1 HIGH arm64: csum: Fix OoB access in IP checksum code for negative lengths
CVE-2023-53716 net: fix skb leak in __skb_tstamp_tx()
CVE-2023-53708 ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
CVE-2023-53704 clk: imx: clk-imx8mp: improve error handling in imx8mp_clocks_probe()
CVE-2023-53712 ARM: 9317/1: kexec: Make smp stop calls asynchronous
CVE-2023-53702 s390/crypto: use vector instructions only if available for ChaCha20
CVE-2023-53706 mm/vmemmap/devdax: fix kernel crash when probing devdax devices

Showing top 20 of 67 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53731

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