5.5

CVE-2022-48977: can: af_can: fix NULL pointer dereference in can_rcv_filter

Analyzed
AliasesUBUNTU-CVE-2022-48977DEBIAN-CVE-2022-48977
Published 21-10-2024Last modified 23-05-2026

Vulnerability summary

CVE-2022-48977 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.8% 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
0.24%
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 5 · Related 5
SUSE-SU-2024:3983-1SUSE-SU-2024:3985-1SUSE-SU-2024:4082-1SUSE-SU-2024:4131-1SUSE-SU-2024:4364-1

Timeline

  1. 21-10-2024
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: can: af_can: fix NULL pointer dereference in can_rcv_filter Analogue to commit 8aa59e355949 ("can: af_can: fix NULL pointer dereference in can_rx_register()") we need to check for a missing initialization of ml_priv in the receive path of CAN frames. Since commit 4e096a18867a ("net: introduce CAN specific pointer in the struct net_device") the check for dev->type to be ARPHRD_CAN is not sufficient anymore since bonding or tun netdevices claim to be CAN devices but do not initialize ml_priv accordingly.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% 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.

Ubuntu109 products
  • linux< 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1097.105 | < 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 4ac1feff6ea6495cbfd336f4438a6c6d140544a6, < 3982652957e8d79ac32efcb725450580650a8644 | ≥ 1a5751d58b14195f763b8c1d9ef33fb8a93e95e7, < c42221efb1159d6a3c89e96685ee38acdce86b6f | ≥ 4e096a18867a5a989b510f6999d9c6b6622e8f7b, < c142cba37de29f740a3852f01f59876af8ae462a | ≥ 4e096a18867a5a989b510f6999d9c6b6622e8f7b, < fcc63f2f7ee3038d53216edd0d8291e57c752557 | ≥ 4e096a18867a5a989b510f6999d9c6b6622e8f7b, < 0acc442309a0a1b01bcdaa135e56e6398a49439c | 96340078d50a54f6a1252c62596bc44321c8bff9 | ≥ 5.4.110, < 5.4.227 | ≥ 5.10.28, < 5.10.159 | ≥ 5.11.12, < 5.12 | 5.12
  • linux_kernel≥ 5.4.110, < 5.4.227 | ≥ 5.10.28, < 5.10.159 | ≥ 5.11.12, < 5.15.83 | ≥ 5.16, < 6.0.13 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5 | 6.1:rc6 | 6.1:rc7 | 6.1:rc8
Debian1 product
  • linux< 6.1.4-1

3 vendors · 112 products

References

9 links