net: fix NULL pointer dereference in l3mdev_l3_rcv

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-22103
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-04-16 15:16:04 UTC
Updated2026-09-14 12:17:35 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: fix NULL pointer dereference in l3mdev_l3_rcv When delete l3s ipvlan: ip link del link eth0 ipvlan1 type ipvlan mode l3s This may cause a null pointer dereference: Call trace: ip_rcv_finish+0x48/0xd0 ip_rcv+0x5c/0x100 __netif_receive_skb_one_core+0x64/0xb0 __netif_receive_skb+0x20/0x80 process_backlog+0xb4/0x204 napi_poll+0xe8/0x294 net_rx_action+0xd8/0x22c __do_softirq+0x12c/0x354 This is because l3mdev_l3_rcv() visit dev->l3mdev_ops after ipvlan_l3s_unregister() assign the dev->l3mdev_ops to NULL. The process like this: (CPU1) | (CPU2) l3mdev_l3_rcv() | check dev->priv_flags: | master = skb->dev; | | | ipvlan_l3s_unregister() | set dev->priv_flags | dev->l3mdev_ops = NULL; | visit master->l3mdev_ops | To avoid this by do not set dev->l3mdev_ops when unregister l3s ipvlan.

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: CWE-476

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 c675e06a98a474f7ad0af32ce467613da818da52 1da52878f7fb74ace304f74325bb89e3e5546b55 git Not specified
CNA Linux Linux affected c675e06a98a474f7ad0af32ce467613da818da52 d97d6b1bd2b7f2a188d261d44c4519a13b8c406a git Not specified
CNA Linux Linux affected c675e06a98a474f7ad0af32ce467613da818da52 8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862 git Not specified
CNA Linux Linux affected c675e06a98a474f7ad0af32ce467613da818da52 52b44d8c653459c658b733d13658afdde45f6836 git Not specified
CNA Linux Linux affected c675e06a98a474f7ad0af32ce467613da818da52 59599bce44af3df7a215ebc81cb166426e1c9204 git Not specified
CNA Linux Linux affected c675e06a98a474f7ad0af32ce467613da818da52 f9dff65140efc289f01bcf39c3ca66a8806b6132 git Not specified
CNA Linux Linux affected c675e06a98a474f7ad0af32ce467613da818da52 0032c99e83b9ce6d5995d65900aa4b6ffb501cce git Not specified
CNA Linux Linux affected 5.1 Not specified
CNA Linux Linux unaffected 5.1 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.117 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.46 6.12.* semver Not specified
CNA Linux Linux unaffected 6.14.2 6.14.* semver Not specified
CNA Linux Linux unaffected 6.15 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/52b44d8c653459c658b733d13658afdde45f6836 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1da52878f7fb74ace304f74325bb89e3e5546b55 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/59599bce44af3df7a215ebc81cb166426e1c9204 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0032c99e83b9ce6d5995d65900aa4b6ffb501cce 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f9dff65140efc289f01bcf39c3ca66a8806b6132 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d97d6b1bd2b7f2a188d261d44c4519a13b8c406a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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