7.8

CVE-2019-19241: linux linux_kernel

Modified
AliasesUBUNTU-CVE-2019-19241DEBIAN-CVE-2019-19241
Published 17-12-2019Last modified 05-08-2024

Vulnerability summary

CVE-2019-19241 is a high (CVSS 7.8) vulnerability in linux linux_kernel. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 65.3% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritiseweaponized exploit

Weaponized exploit (exploit-database, 16-12-2019)

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
1.09%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-4284-1

Timeline

  1. 17-12-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.09%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.09% 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

1 found
  • exploit-databaselocallinuxVerified

    Linux 5.3 - Privilege Escalation via io_uring Offload of sendmsg() onto Kernel Thread with Kernel Creds

    Maturity: weaponized

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

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

Ubuntu17 products
  • linux-azure-5.3< 5.3.0-1013.14~18.04.1
  • linux-azure-edgeAll versions (No fix recorded)
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-gcp-5.3< 5.3.0-1012.13~18.04.1
  • linux-gcp-edgeAll versions (No fix recorded)
Debian1 product
  • linux< 5.3.15-1
Linux1 product

3 vendors · 19 products

References

12 links
Show all 12 references