# CVE-2022-49877: linux: In the Linux kernel, the following vulnerability has been resolved:  bpf, sockmap: Fix the sk->sk_forward_alloc warni...

CVE-2022-49877 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49877, released May 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49877
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 1, 2025

## 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;

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.0.10-1 | [DEBIAN-CVE-2022-49877](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49877.md) | May 1, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.0.10-1 | [DEBIAN-CVE-2022-49877](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49877.md) | May 1, 2025 |
| Linux | linux Debian 14 | 6.0.10-1 | [DEBIAN-CVE-2022-49877](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49877.md) | May 1, 2025 |

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