CVE-2026-53071— Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp
Possible ATT&CK Techniques 2AI
T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 15f02b91056253e8cdc592888f431da0731337b8< 96dca51715d86559ed6ed8028e5445cecb80f3ae | affected |
15f02b91056253e8cdc592888f431da0731337b8< 330b20ec97916961ee0e6c29c06bc0fa7c96e64c | affected | ||
15f02b91056253e8cdc592888f431da0731337b8< 0ccd75c51f620374086f359e906917676e699a1c | affected | ||
15f02b91056253e8cdc592888f431da0731337b8< 77a853aec710b2fdf41fa298ea3cbc9a4358f917 | affected | ||
15f02b91056253e8cdc592888f431da0731337b8< fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14 | affected | ||
15f02b91056253e8cdc592888f431da0731337b8< dc89961b76f12aff47124c1df4bdb32a080f4d0c | affected | ||
15f02b91056253e8cdc592888f431da0731337b8< 5501d055a1ce3c747141e3955ba8cf034d193f3e | affected | ||
15f02b91056253e8cdc592888f431da0731337b8< 42776497cdbc9a665b384a6dcb85f0d4bd927eab | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2026-53071
Vulnerability Information
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Vulnerability Title
Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp l2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding l2cap_chan_lock(). Every other l2cap_chan_del() caller in the file acquires the lock first. A remote BLE device can send a crafted L2CAP ECRED reconfiguration response to corrupt the channel list while another thread is iterating it. Add l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(), and l2cap_chan_unlock() and l2cap_chan_put() after, matching the pattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/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基金会开源的操作系统Linux所使用的内核。 Linux kernel 5.7版本存在安全漏洞，该漏洞源于缺少chan锁，可能导致远程BLE设备发送特制L2CAP ECRED重配置响应，在另一个线程迭代通道列表时破坏通道列表。
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
II. Public POCs for CVE-2026-53071
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-53071 (7)
Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total
| CVE-2026-53045 | 9.8 CRITICAL | memory: tegra124-emc: Fix dll_change check |
| CVE-2026-53010 | 9.8 CRITICAL | ksmbd: fix use-after-free in smb2_open during durable reconnect |
| CVE-2026-53088 | 9.8 CRITICAL | net: bcmgenet: fix off-by-one in bcmgenet_put_txcb |
| CVE-2026-53006 | 9.8 CRITICAL | ipv6: fix possible UAF in icmpv6_rcv() |
| CVE-2026-53002 | 9.8 CRITICAL | netfilter: conntrack: remove sprintf usage |
| CVE-2026-53086 | 9.8 CRITICAL | net: bcmgenet: fix racing timeout handler |
| 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-2026-52955 | 9.8 CRITICAL | libceph: Fix potential out-of-bounds access in crush_decode() |
| CVE-2026-53046 | 9.8 CRITICAL | ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine |
| CVE-2026-53049 | 9.8 CRITICAL | gfs2: add some missing log locking |
| 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-2026-52931 | 9.8 CRITICAL | batman-adv: tp_meter: avoid use of uninit sender vars |
| CVE-2026-52914 | 9.8 CRITICAL | batman-adv: fix fragment reassembly length accounting |
| 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 |
| CVE-2026-52958 | 9.1 CRITICAL | libceph: Fix potential out-of-bounds access in osdmap_decode() |
Showing top 20 of 219 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
V. Comments for CVE-2026-53071
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