7.8

CVE-2022-49811: drbd: use after free in drbd_create_device()

Analyzed
AliasesUBUNTU-CVE-2022-49811DEBIAN-CVE-2022-49811
Published 01-05-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-49811 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, 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
0.23%
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 1
RHSA-2023:6583

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drbd: use after free in drbd_create_device() The drbd_destroy_connection() frees the "connection" so use the _safe() iterator to prevent a use after free.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% 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.

Ubuntu113 products
  • linuxAll versions (No fix recorded) | < 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1151.164 | < 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≥ b6f85ef9538b2111a8ba0bbfae9aaebabfc94961, < fc1897f16ebcfd22364f2afcc27f53a740f3bc7a | ≥ b6f85ef9538b2111a8ba0bbfae9aaebabfc94961, < bf47ca1b35fc1f55091ffaff5fbe41ea0c6f59a1 | ≥ b6f85ef9538b2111a8ba0bbfae9aaebabfc94961, < 813a8dd9c45fd46f5cbbfbedf0791afa7740ccf5 | ≥ b6f85ef9538b2111a8ba0bbfae9aaebabfc94961, < 9ed51414aef6e59e832e2960f10766dce2d5b1a1 | ≥ b6f85ef9538b2111a8ba0bbfae9aaebabfc94961, < 7d93417d596402ddd46bd76c721f205d09d0d025 | ≥ b6f85ef9538b2111a8ba0bbfae9aaebabfc94961, < c2a00b149836d60c222930bbea6b2139caf34d4f | ≥ b6f85ef9538b2111a8ba0bbfae9aaebabfc94961, < a7a1598189228b5007369a9622ccdf587be0730f | 3.15
  • linux_kernel≥ 3.15, < 4.14.300 | ≥ 4.15, < 4.19.267 | ≥ 4.20, < 5.4.225 | ≥ 5.5, < 5.10.156 | ≥ 5.11, < 5.15.80 | ≥ 5.16, < 6.0.10 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5
Debian1 product
  • linux< 6.0.10-1

3 vendors · 116 products

References

11 links
Show all 11 references