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CVE-2024-53206— tcp: Fix use-after-free of nreq in reqsk_timer_handler().

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ALSA:usx2y模块中USB断开时资源释放不当，可能导致内存泄漏。

CVSS 9.8 · Critical EPSS 0.63% · P49

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 22

VendorProduct Version RangeStatus
Linux Linux 8459d61fbf24967839a70235165673148c7c7f17< 2dcc86fefe09ac853158afd96b60d544af115dc5 affected
5071beb59ee416e8ab456ac8647a4dabcda823b1< 9a3c1ad93e6fba67b3a637cfa95a57a6685e4908 affected
997ae8da14f1639ce6fb66a063dab54031cd61b3< 65ed89cad1f57034c256b016e89e8c0a4ec7c65b affected
51e34db64f4e43c7b055ccf881b7f3e0c31bb26d< d0eb14cb8c08b00c36a3d5dc57a6f428b301f721 affected
e8c526f2bdf1845bedaf6a478816a3d06fa78b8f< 6d845028609a4af0ad66f499ee0bd5789122b067 affected
e8c526f2bdf1845bedaf6a478816a3d06fa78b8f< c31e72d021db2714df03df6c42855a1db592716c affected
106e457953315e476b3642ef24be25ed862aaba3 affected
c964bf65f80a14288d767023a1b300b30f5b9cd0 affected
… +14 more rows
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I. Basic Information for CVE-2024-53206

Vulnerability Information
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Vulnerability Title
tcp: Fix use-after-free of nreq in reqsk_timer_handler().
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tcp: Fix use-after-free of nreq in reqsk_timer_handler(). The cited commit replaced inet_csk_reqsk_queue_drop_and_put() with __inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler(). Then, oreq should be passed to reqsk_put() instead of req; otherwise use-after-free of nreq could happen when reqsk is migrated but the retry attempt failed (e.g. due to timeout). Let's pass oreq to reqsk_put().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/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ALSA:usx2y模块中USB断开时资源释放不当，可能导致内存泄漏。
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 8459d61fbf24967839a70235165673148c7c7f17 ~ 2dcc86fefe09ac853158afd96b60d544af115dc5 -
Linux Linux 6.12 -

II. Public POCs for CVE-2024-53206

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III. Intelligence Information for CVE-2024-53206

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Patches & Fixes for CVE-2024-53206 (6)

Same Patch Batch · Linux · 2024-12-27 · 221 CVEs total

CVE-2024-53186 9.8 CRITICAL ksmbd: fix use-after-free in SMB request handling
CVE-2024-53179 9.8 CRITICAL smb: client: fix use-after-free of signing key
CVE-2024-53169 9.8 CRITICAL nvme-fabrics: fix kernel crash while shutting down controller
CVE-2024-56645 9.8 CRITICAL can: j1939: j1939_session_new(): fix skb reference counting
CVE-2024-53209 9.8 CRITICAL bnxt_en: Fix receive ring space parameters when XDP is active
CVE-2024-53177 9.8 CRITICAL smb: prevent use-after-free due to open_cached_dir error paths
CVE-2024-53176 9.8 CRITICAL smb: During unmount, ensure all cached dir instances drop their dentry
CVE-2024-56640 9.8 CRITICAL net/smc: fix LGR and link use-after-free issue
CVE-2024-56656 9.8 CRITICAL bnxt_en: Fix aggregation ID mask to prevent oops on 5760X chips
CVE-2024-56591 8.8 HIGH Bluetooth: hci_conn: Use disable_delayed_work_sync
CVE-2024-56626 8.8 HIGH ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write
CVE-2024-56669 8.8 HIGH iommu/vt-d: Remove cache tags before disabling ATS
CVE-2024-53237 8.8 HIGH Bluetooth: fix use-after-free in device_for_each_child()
CVE-2024-53224 8.8 HIGH RDMA/mlx5: Move events notifier registration to be after device registration
CVE-2024-56651 8.8 HIGH can: hi311x: hi3110_can_ist(): fix potential use-after-free
CVE-2024-56653 8.8 HIGH Bluetooth: btmtk: avoid UAF in btmtk_process_coredump
CVE-2024-56627 8.1 HIGH ksmbd: fix Out-of-Bounds Read in ksmbd_vfs_stream_read
CVE-2024-56538 7.8 HIGH drm: zynqmp_kms: Unplug DRM device before removal
CVE-2024-56540 7.8 HIGH accel/ivpu: Prevent recovery invocation during probe and resume
CVE-2024-53232 7.8 HIGH iommu/s390: Implement blocking domain

Showing top 20 of 221 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-53206

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