CVE-2022-49877 - CVE House
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Status published Medium CVE-2022-49877

bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues When running `test_sockmap` selftests, the following warning appears: WARNING: CPU: 2 PID: 197 at net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0 Call Trace: <TASK> inet_csk_destroy_sock+0x55/0x110 tcp_rcv_state_process+0xd28/0x1380 ? tcp_v4_do_rcv+0x77/0x2c0 tcp_v4_do_rcv+0x77/0x2c0 __release_sock+0x106/0x130 __tcp_close+0x1a7/0x4e0 tcp_close+0x20/0x70 inet_release+0x3c/0x80 __sock_release+0x3a/0xb0 sock_close+0x14/0x20 __fput+0xa3/0x260 task_work_run+0x59/0xb0 exit_to_user_mode_prepare+0x1b3/0x1c0 syscall_exit_to_user_mode+0x19/0x50 do_syscall_64+0x48/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae The root case is in commit 84472b436e76 ("bpf, sockmap: Fix more uncharged while msg has more_data"), where I used msg->sg.size to replace the tosend, causing breakage: if (msg->apply_bytes && msg->apply_bytes < tosend) tosend = psock->apply_bytes;

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
244ce90c8d0bd10ebf957da02c6f3fcd5d920bdf, 7b812a369e6416ab06d83cdd39d8e3f752781dd0, 168ff181f5b6e7fce684c98a30d35da1dbf8f82a, 84472b436e760ba439e1969a9e3c5ae7c86de39d, 87d532d41ef937e16f61b3d2094f3a2ac49be365, abb4caa477a5450817d2aa1198edce66450aecf8, 5.4.189, 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.18, 0, 5.4.225, 5.10.155, 5.15.79, 6.0.9, 6.1

Timeline

Official Publish: May 1st, 2025
Last Modified: May 23rd, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.