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CVE-2022-50676— net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()

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rds_tcp_reset_callbacks中不当使用锁，可能导致死锁。

CVSS 7.5 · High EPSS 0.95% · P61

Possible ATT&CK Techniques 2 AI

T1211 · Exploitation for Stealth T1562

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux ac3615e7f3cffe2a1a6b25172dfd09e138593d82< 5d2ba255e93211e541373469dffbda7c99dfa0e5 affected
ac3615e7f3cffe2a1a6b25172dfd09e138593d82< 2425007c0967a7c04b0dee7cce05ecf0ca869ad1 affected
ac3615e7f3cffe2a1a6b25172dfd09e138593d82< e3cb25d3ad08f5dbd53ce2b31720cad529944322 affected
ac3615e7f3cffe2a1a6b25172dfd09e138593d82< 360aa7219285fac63dab99706a16f2daf3222abe affected
ac3615e7f3cffe2a1a6b25172dfd09e138593d82< da349221c4d2d4ac5f606c1c3b36d4ef0b3e6a0c affected
ac3615e7f3cffe2a1a6b25172dfd09e138593d82< 30bfa5aa7228eb1e67663d67e553627e572cc717 affected
ac3615e7f3cffe2a1a6b25172dfd09e138593d82< c380c28ab9b15fc53565909c814f6dd3e7f77c4b affected
ac3615e7f3cffe2a1a6b25172dfd09e138593d82< afe7053c390fe8ff27d0c2ceaece5625283044ba affected
… +12 more rows
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I. Basic Information for CVE-2022-50676

Vulnerability Information
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Vulnerability Title
net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks() syzbot is reporting lockdep warning at rds_tcp_reset_callbacks() [1], for commit ac3615e7f3cffe2a ("RDS: TCP: Reduce code duplication in rds_tcp_reset_callbacks()") added cancel_delayed_work_sync() into a section protected by lock_sock() without realizing that rds_send_xmit() might call lock_sock(). We don't need to protect cancel_delayed_work_sync() using lock_sock(), for even if rds_{send,recv}_worker() re-queued this work while __flush_work() from cancel_delayed_work_sync() was waiting for this work to complete, retried rds_{send,recv}_worker() is no-op due to the absence of RDS_CONN_UP bit.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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rds_tcp_reset_callbacks中不当使用锁，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 ac3615e7f3cffe2a1a6b25172dfd09e138593d82 ~ 5d2ba255e93211e541373469dffbda7c99dfa0e5 -
Linux Linux 4.8 -

II. Public POCs for CVE-2022-50676

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III. Intelligence Information for CVE-2022-50676

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Same Patch Batch · Linux · 2025-12-09 · 152 CVEs total

CVE-2025-40343 9.8 CRITICAL nvmet-fc: avoid scheduling association deletion twice
CVE-2023-53794 9.8 CRITICAL cifs: fix session state check in reconnect to avoid use-after-free issue
CVE-2022-50666 9.8 CRITICAL RDMA/siw: Fix QP destroy to wait for all references dropped.
CVE-2023-53827 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}
CVE-2023-53785 8.8 HIGH mt76: mt7921: don't assume adequate headroom for SDIO headers
CVE-2023-53822 8.8 HIGH wifi: ath11k: Ignore frags from uninitialized peer in dp.
CVE-2025-40336 8.8 HIGH drm/gpusvm: fix hmm_pfn_to_map_order() usage
CVE-2025-40342 8.8 HIGH nvme-fc: use lock accessing port_state and rport state
CVE-2025-40328 8.8 HIGH smb: client: fix potential UAF in smb2_close_cached_fid()
CVE-2023-53851 8.4 HIGH drm/msm/dp: Drop aux devices together with DP controller
CVE-2025-40337 8.2 HIGH net: stmmac: Correctly handle Rx checksum offload errors
CVE-2022-50656 8.1 HIGH nfc: pn533: Clear nfc_target before being used
CVE-2023-53803 8.1 HIGH scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()
CVE-2023-53804 7.8 HIGH nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode()
CVE-2023-53819 7.8 HIGH amdgpu: validate offset_in_bo of drm_amdgpu_gem_va
CVE-2023-53816 7.8 HIGH drm/amdkfd: fix potential kgd_mem UAFs
CVE-2023-53800 7.8 HIGH ubi: Fix use-after-free when volume resizing failed
CVE-2023-53790 7.8 HIGH bpf: Zeroing allocated object from slab in bpf memory allocator
CVE-2023-53795 7.8 HIGH iommufd: IOMMUFD_DESTROY should not increase the refcount
CVE-2023-53810 7.8 HIGH blk-mq: release crypto keyslot before reporting I/O complete

Showing top 20 of 152 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50676

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