bpf, sockmap: Fix more uncharged while msg has more_data

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2022-49204
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-02-26 07:00:57 UTC
Updated2026-11-05 20:17:02 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix more uncharged while msg has more_data In tcp_bpf_send_verdict(), if msg has more data after tcp_bpf_sendmsg_redir(): tcp_bpf_send_verdict() tosend = msg->sg.size //msg->sg.size = 22220 case __SK_REDIRECT: sk_msg_return() //uncharged msg->sg.size(22220) sk->sk_forward_alloc tcp_bpf_sendmsg_redir() //after tcp_bpf_sendmsg_redir, msg->sg.size=11000 goto more_data; tosend = msg->sg.size //msg->sg.size = 11000 case __SK_REDIRECT: sk_msg_return() //uncharged msg->sg.size(11000) to sk->sk_forward_alloc The msg->sg.size(11000) has been uncharged twice, to fix we can charge the remaining msg->sg.size before goto more data. This issue can cause the following info: WARNING: CPU: 0 PID: 9860 at net/core/stream.c:208 sk_stream_kill_queues+0xd4/0x1a0 Call Trace: <TASK> inet_csk_destroy_sock+0x55/0x110 __tcp_close+0x279/0x470 tcp_close+0x1f/0x60 inet_release+0x3f/0x80 __sock_release+0x3d/0xb0 sock_close+0x11/0x20 __fput+0x92/0x250 task_work_run+0x6a/0xa0 do_exit+0x33b/0xb60 do_group_exit+0x2f/0xa0 get_signal+0xb6/0x950 arch_do_signal_or_restart+0xac/0x2a0 ? vfs_write+0x237/0x290 exit_to_user_mode_prepare+0xa9/0x200 syscall_exit_to_user_mode+0x12/0x30 do_syscall_64+0x46/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae </TASK> WARNING: CPU: 0 PID: 2136 at net/ipv4/af_inet.c:155 inet_sock_destruct+0x13c/0x260 Call Trace: <TASK> __sk_destruct+0x24/0x1f0 sk_psock_destroy+0x19b/0x1c0 process_one_work+0x1b3/0x3c0 worker_thread+0x30/0x350 ? process_one_work+0x3c0/0x3c0 kthread+0xe6/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30 </TASK>

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 604326b41a6fb9b4a78b6179335decee0365cd8c 244ce90c8d0bd10ebf957da02c6f3fcd5d920bdf git Not specified
CNA Linux Linux affected 604326b41a6fb9b4a78b6179335decee0365cd8c 7b812a369e6416ab06d83cdd39d8e3f752781dd0 git Not specified
CNA Linux Linux affected 604326b41a6fb9b4a78b6179335decee0365cd8c 168ff181f5b6e7fce684c98a30d35da1dbf8f82a git Not specified
CNA Linux Linux affected 604326b41a6fb9b4a78b6179335decee0365cd8c 87d532d41ef937e16f61b3d2094f3a2ac49be365 git Not specified
CNA Linux Linux affected 604326b41a6fb9b4a78b6179335decee0365cd8c abb4caa477a5450817d2aa1198edce66450aecf8 git Not specified
CNA Linux Linux affected 604326b41a6fb9b4a78b6179335decee0365cd8c 84472b436e760ba439e1969a9e3c5ae7c86de39d git Not specified
CNA Linux Linux affected 4.20 Not specified
CNA Linux Linux unaffected 4.20 semver Not specified
CNA Linux Linux unaffected 5.4.189 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.110 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.33 5.15.* semver Not specified
CNA Linux Linux unaffected 5.16.19 5.16.* semver Not specified
CNA Linux Linux unaffected 5.17.2 5.17.* semver Not specified
CNA Linux Linux unaffected 5.18 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/84472b436e760ba439e1969a9e3c5ae7c86de39d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/244ce90c8d0bd10ebf957da02c6f3fcd5d920bdf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/87d532d41ef937e16f61b3d2094f3a2ac49be365 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/7b812a369e6416ab06d83cdd39d8e3f752781dd0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/abb4caa477a5450817d2aa1198edce66450aecf8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/168ff181f5b6e7fce684c98a30d35da1dbf8f82a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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