Use After Free in Linux Kernel
CVE-2023-40283
An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (44.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 10.0, 11.0, 12.0
Weakness classification (CWE)
References
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch)
- github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1 (Patch)
- cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10 (Release Notes)
- DSA-5480 (vendor-advisory, Third Party Advisory)
- DSA-5492 (vendor-advisory, Third Party Advisory)
- packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098… (VDB Entry, Third Party Advisory)
- [debian-lts-announce] 20231019 [SECURITY] [DLA 3623-1] linux-5.10 security update (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20231020-0007/ (Third Party Advisory)
- packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099… (VDB Entry, Third Party Advisory)
- [debian-lts-announce] 20240111 [SECURITY] [DLA 3710-1] linux security update (mailing-list, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2023-40283?
- CVE-2023-40283 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-08-14.
- How severe is CVE-2023-40283?
- High severity. CVSS v3 base score is 7.8 out of 10.