Vulnerability in Linux Kernel
CVE-2023-31084
An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and down(&fepriv->sem) may block the process.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel — versions 6.2
- NetApp H410c
- NetApp H410c Firmware
- Debian Linux — versions 10.0, 11.0, 12.0
- Fedoraproject Fedora — versions 37, 38
Weakness classification (CWE)
References
- lore.kernel.org/all/CA+UBctCu7fXn4q41O_3=id1+OdyQ85tZY1x+TkT-6OVBL6KAUw@mail.gm…
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2023/dsa-5448 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/07/msg00030.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2023/dsa-5480 (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20230929-0003/ (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/10/msg00027.html (mailing-list, Mailing List, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/
Frequently asked questions
- What is CVE-2023-31084?
- CVE-2023-31084 is a medium-severity vulnerability in Linux Kernel, classified under CWE-833. CVSS score: 5.5/10. Published 2023-04-24.
- How severe is CVE-2023-31084?
- Medium severity. CVSS v3 base score is 5.5 out of 10.