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CVE-2023-53189— ipv6/addrconf: fix a potential refcount underflow for idev

CVSS 7.8 · High EPSS 0.16% · P6

Possible ATT&CK Techniques 1AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 20

VendorProductVersion RangeStatus
LinuxLinuxb7b1bfce0bb68bd8f6e62a28295922785cc63781< c6395e32935d35e6f935e7caf1c2dac5a95943b4affected
b7b1bfce0bb68bd8f6e62a28295922785cc63781< df62fdcd004afa72ecbed0e862ebb983acd3aa57affected
b7b1bfce0bb68bd8f6e62a28295922785cc63781< c7eeba47058532f6077d6a658e38b6698f6ae71aaffected
b7b1bfce0bb68bd8f6e62a28295922785cc63781< 2ad31ce40e8182860b631e37209e93e543790b7caffected
b7b1bfce0bb68bd8f6e62a28295922785cc63781< 82abd1c37d3bf2a2658b34772c17a25a6f9cca42affected
b7b1bfce0bb68bd8f6e62a28295922785cc63781< 436b7cc7eae7851c184b671ed7a4a64c750b86f7affected
b7b1bfce0bb68bd8f6e62a28295922785cc63781< 1f656e483eb4733d62f18dfb206a49b78f60f495affected
b7b1bfce0bb68bd8f6e62a28295922785cc63781< 06a0716949c22e2aefb648526580671197151accaffected
… +12 more rows
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I. Basic Information for CVE-2023-53189

Vulnerability Information
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Vulnerability Title
ipv6/addrconf: fix a potential refcount underflow for idev
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fix a potential refcount underflow for idev Now in addrconf_mod_rs_timer(), reference idev depends on whether rs_timer is not pending. Then modify rs_timer timeout. There is a time gap in [1], during which if the pending rs_timer becomes not pending. It will miss to hold idev, but the rs_timer is activated. Thus rs_timer callback function addrconf_rs_timer() will be executed and put idev later without holding idev. A refcount underflow issue for idev can be caused by this. if (!timer_pending(&idev->rs_timer)) in6_dev_hold(idev); <--------------[1] mod_timer(&idev->rs_timer, jiffies + when); To fix the issue, hold idev if mod_timer() return 0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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addrconf_mod_rs_timer函数中缺少引用计数检查，可能导致引用计数下溢。
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 b7b1bfce0bb68bd8f6e62a28295922785cc63781 ~ c6395e32935d35e6f935e7caf1c2dac5a95943b4 -
LinuxLinux 3.11 -

II. Public POCs for CVE-2023-53189

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III. Intelligence Information for CVE-2023-53189

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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-502359.8 CRITICALNFSD: Protect against send buffer overflow in NFSv2 READDIR
CVE-2022-503359.8 CRITICAL9p: set req refcount to zero to avoid uninitialized usage
CVE-2023-531929.8 CRITICALvxlan: Fix nexthop hash size
CVE-2023-532538.8 HIGHHID: nvidia-shield: Reference hid_device devm allocation of input_dev name
CVE-2023-532268.8 HIGHwifi: mwifiex: Fix OOB and integer underflow when rx packets
CVE-2022-502418.8 HIGHNFSD: fix use-after-free on source server when doing inter-server copy
CVE-2023-531948.4 HIGHfs/ntfs3: Add length check in indx_get_root
CVE-2023-532138.1 HIGHwifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
CVE-2023-531868.1 HIGHskbuff: Fix a race between coalescing and releasing SKBs
CVE-2022-503037.8 HIGHdrm/amdkfd: Fix double release compute pasid
CVE-2023-532547.8 HIGHcacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-532527.8 HIGHBluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-531707.8 HIGHnet: dsa: Removed unneeded of_node_put in felix_parse_ports_node
CVE-2023-531767.8 HIGHserial: 8250: Reinit port->pm on port specific driver unbind
CVE-2023-531787.8 HIGHmm: fix zswap writeback race condition
CVE-2023-531797.8 HIGHnetfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
CVE-2023-531847.8 HIGHarm64/sme: Set new vector length before reallocating
CVE-2022-503157.8 HIGHata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
CVE-2025-398007.8 HIGHbtrfs: abort transaction on unexpected eb generation at btrfs_copy_root()
CVE-2022-502867.8 HIGHext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53189

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