5.5

CVE-2025-22103: net: fix NULL pointer dereference in l3mdev_l3_rcv

Modified
AliasesUBUNTU-CVE-2025-22103DEBIAN-CVE-2025-22103
Published 16-04-2025Last modified 14-09-2026

Vulnerability summary

CVE-2025-22103 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 25 · Related 24
DSA-6008-1SUSE-SU-2025:01919-1SUSE-SU-2025:01951-1SUSE-SU-2025:01964-1SUSE-SU-2025:01965-1SUSE-SU-2025:01967-1

Timeline

  1. 16-04-2025
    PublishedVulnerability first disclosed.
  2. 14-09-2026
    Last modifiedVulnerability information updated.

Description

In 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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.20% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu135 products
  • linuxAll versions (No fix recorded) | < 6.8.0-106.106
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1050.53
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c675e06a98a474f7ad0af32ce467613da818da52, < 1da52878f7fb74ace304f74325bb89e3e5546b55 | ≥ c675e06a98a474f7ad0af32ce467613da818da52, < d97d6b1bd2b7f2a188d261d44c4519a13b8c406a | ≥ c675e06a98a474f7ad0af32ce467613da818da52, < 8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862 | ≥ c675e06a98a474f7ad0af32ce467613da818da52, < 52b44d8c653459c658b733d13658afdde45f6836 | ≥ c675e06a98a474f7ad0af32ce467613da818da52, < 59599bce44af3df7a215ebc81cb166426e1c9204 | ≥ c675e06a98a474f7ad0af32ce467613da818da52, < f9dff65140efc289f01bcf39c3ca66a8806b6132 | ≥ c675e06a98a474f7ad0af32ce467613da818da52, < 0032c99e83b9ce6d5995d65900aa4b6ffb501cce | 5.1
  • linux_kernel≥ 5.1, < 6.12.46 | ≥ 6.13, < 6.14.2
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.48-1 | < 6.16.3-1

3 vendors · 138 products

References

25 links
Show all 25 references