7.8

CVE-2022-49956: staging: rtl8712: fix use after free bugs

Modified
AliasesUBUNTU-CVE-2022-49956DEBIAN-CVE-2022-49956
Published 18-06-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-49956 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.25%
0%100%
Low · +0.01 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 7 · Related 7
SUSE-SU-2025:02264-1SUSE-SU-2025:02308-1SUSE-SU-2025:02320-1SUSE-SU-2025:02321-1SUSE-SU-2025:02322-1SUSE-SU-2025:02334-1

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8712: fix use after free bugs _Read/Write_MACREG callbacks are NULL so the read/write_macreg_hdl() functions don't do anything except free the "pcmd" pointer. It results in a use after free. Delete them.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

Increase +0.01 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.

Ubuntu111 products
  • linuxAll versions (No fix recorded) | < 4.4.0-240.274 | < 4.15.0-201.212 | < 5.4.0-136.153 | < 5.15.0-57.63
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1118.124 | < 4.4.0-1156.171 | < 4.15.0-1147.159 | < 5.4.0-1093.101 | < 5.15.0-1027.31
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef, < 7dce6b0ee7d78667d6c831ced957a08769973063 | ≥ 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef, < 376e15487fec837301d888068a3fcc82efb6171a | ≥ 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef, < 9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27 | ≥ 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef, < d0aac7146e96bf39e79c65087d21dfa02ef8db38 | ≥ 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef, < 19e3f69d19801940abc2ac37c169882769ed9770 | ≥ 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef, < dc02aaf950015850e7589696521c7fca767cea77 | ≥ 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef, < b1727def850904e4b8ba384043775672841663a1 | ≥ 2865d42c78a9121caad52cb02d1fbb7f5cdbc4ef, < e230a4455ac3e9b112f0367d1b8e255e141afae0 | 2.6.37
  • linux_kernel≥ 2.6.37, < 4.9.328 | ≥ 4.10, < 4.14.293 | ≥ 4.15, < 4.19.258 | ≥ 4.20, < 5.4.213 | ≥ 5.5, < 5.10.142 | ≥ 5.11, < 5.15.66 | ≥ 5.16, < 5.19.8 | 6.0:rc1 | 6.0:rc2 | 6.0:rc3
Debian1 product
  • linux< 6.0.2-1

3 vendors · 114 products

References

11 links
Show all 11 references