CVE-2023-33250 json
The Linux kernel 6.3 has a use-after-free in iopt_unmap_iova_range in drivers/iommu/iommufd/io_pagetable.c.
published 2023-05-21 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-37418
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
The Linux kernel 6.3 has a use-after-free in iopt_unmap_iova_range in drivers/iommu/iommufd/io_pagetable.c.
Patch / fix
- linux Debian 14, Debian 13 6.4.4-1
debian advisories DEBIAN-CVE-2023-33250
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2023-33250 updated cvss 4.4
kernel: use-after-free in iopt_unmap_iova_range() in Linux kernel
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 morenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 20 mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-416 Use After Free
- Technology feeds
References
- git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dbe245cdf5189e88d680379ed13901356628b650
- git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=804ca14d04df09bf7924bacc5ad22a4bed80c94f
-
groups.google.com
/g/syzkaller/c/G6P9yecsTZ8/m/iiqFVOM9BwAJ
mailing-list, third-party-advisory
- lore.kernel.org /linux-iommu/ZDabT%2FuRl%2FjxFhm0%40ip-172-31-85-199.ec2.internal/T/
-
security.netapp.com
/advisory/ntap-20230622-0006/
third-party-advisory
- bugzilla.suse.com /show_bug.cgi?id=1211597
Sources
- CVE List CVE-2023-33250
- NVD CVE-2023-33250
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.