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CVE-2026-53112— wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet

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基金会开源的操作系统Linux所使用的内核。 Linux kernel 2.6.38版本存在安全漏洞，该漏洞源于rtlwifi驱动pci模块中irq_prepare_bcn_tasklet未正确终止，可能导致释放后重用。

AI Predicted 4.4 Difficulty: Hard EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 0c8173385e549f95cd80c3fff5aab87b4f881d8d< ae10d4a1ab6bcaa1336abb171908a9a365761d3e affected
0c8173385e549f95cd80c3fff5aab87b4f881d8d< fac1079e0fdec6df6d7562c21941587236dc3def affected
0c8173385e549f95cd80c3fff5aab87b4f881d8d< e40873820c9d245ce482faa7ad514ebdb3b8d23d affected
0c8173385e549f95cd80c3fff5aab87b4f881d8d< 008c456b76e9070979bc0e763897a5d3b0fdd4dc affected
0c8173385e549f95cd80c3fff5aab87b4f881d8d< 7731b67bd59d1284d150cbe40a47e95a10613234 affected
0c8173385e549f95cd80c3fff5aab87b4f881d8d< aa10a452e34810987fb9f4a047995b30003fb53f affected
0c8173385e549f95cd80c3fff5aab87b4f881d8d< 3c0e8a3179e6325a7dc6ce221aef0e03d854ab4b affected
0c8173385e549f95cd80c3fff5aab87b4f881d8d< 039cd522dc70151da13329a5e3ae19b1736f468a affected
… +10 more rows
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I. Basic Information for CVE-2026-53112

Vulnerability Information
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Vulnerability Title
wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtlwifi: pci: fix possible use-after-free caused by unfinished irq_prepare_bcn_tasklet The irq_prepare_bcn_tasklet is initialized in rtl_pci_init() and scheduled when RTL_IMR_BCNINT interrupt is triggered by hardware. But it is never killed in rtl_pci_deinit(). When the rtlwifi card probe fails or is being detached, the ieee80211_hw is deallocated. However, irq_prepare_bcn_tasklet may still be running or pending, leading to use-after-free when the freed ieee80211_hw is accessed in _rtl_pci_prepare_bcn_tasklet(). Similar to irq_tasklet, add tasklet_kill() in rtl_pci_deinit() to ensure that irq_prepare_bcn_tasklet is properly terminated before the ieee80211_hw is released. The issue was identified through static analysis.
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基金会开源的操作系统Linux所使用的内核。 Linux kernel 2.6.38版本存在安全漏洞，该漏洞源于rtlwifi驱动pci模块中irq_prepare_bcn_tasklet未正确终止，可能导致释放后重用。
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 0c8173385e549f95cd80c3fff5aab87b4f881d8d ~ ae10d4a1ab6bcaa1336abb171908a9a365761d3e -
Linux Linux 2.6.38 -

II. Public POCs for CVE-2026-53112

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III. Intelligence Information for CVE-2026-53112

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Patches & Fixes for CVE-2026-53112 (7)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-53049 9.8 CRITICAL gfs2: add some missing log locking
CVE-2026-52993 9.8 CRITICAL tipc: fix double-free in tipc_buf_append()
CVE-2026-52989 9.8 CRITICAL nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-52986 9.8 CRITICAL netfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-52982 9.8 CRITICAL net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-53002 9.8 CRITICAL netfilter: conntrack: remove sprintf usage
CVE-2026-53006 9.8 CRITICAL ipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-53045 9.8 CRITICAL memory: tegra124-emc: Fix dll_change check
CVE-2026-53046 9.8 CRITICAL ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-52955 9.8 CRITICAL libceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-53086 9.8 CRITICAL net: bcmgenet: fix racing timeout handler
CVE-2026-53055 9.8 CRITICAL crypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-52924 9.8 CRITICAL sctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-53010 9.8 CRITICAL ksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-52931 9.8 CRITICAL batman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-53088 9.8 CRITICAL net: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-52914 9.8 CRITICAL batman-adv: fix fragment reassembly length accounting
CVE-2026-52958 9.1 CRITICAL libceph: Fix potential out-of-bounds access in osdmap_decode()
CVE-2026-53043 9.1 CRITICAL ocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-52999 9.1 CRITICAL netfilter: nfnetlink_osf: fix out-of-bounds read on option matching

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53112

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