Vulnerability · Published Aug 16, 2023 · Assigned by redhat
CVE-2023-4385Kernel: jfs: null pointer dereference in dbfree()
Medium 5.5
In plain English
A medium-severity null pointer dereference in Red Hat Enterprise Linux 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 85.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.18.5-1 | DEBIAN-CVE-2023-4385 |
| Debian:13 | linux | 5.18.5-1 | DEBIAN-CVE-2023-4385 |
| Debian:14 | linux | 5.18.5-1 | DEBIAN-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux | 5.15.0-47.51 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1019.23 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1019.24 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1017.23 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1015.18 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1002.4 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1013.15 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1015.20 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1017.21 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-47.53 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1007.7 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1013.14 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1017.22 | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1014.16 | UBUNTU-CVE-2023-4385 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2023-4385 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- https://access.redhat.com/security/cve/CVE-2023-4385 vdb-entry, x_refsource_REDHAT
- RHBZ#2219272 issue-tracking, x_refsource_REDHAT
- https://github.com/torvalds/linux/commit/0d4837fdb796f99369cf7691d33de1b856bcaf1f