Kernel: io_uring: page use-after-free vulnerability via buffer ring mmap
68Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.
ssvc Actcvss 7.8epss 13%
from disclosure to weapon73 days
Published on NVDJan 16
1st PoC+73d
VulnCheck+407d
exploitation probability
13%top 4% of all CVEs
observed exploitation
yesVulnCheck
7 public exploit(s)
A memory leak flaw was found in the Linux kernel’s io_uring functionality in how a user registers a buffer ring with IORING_REGISTER_PBUF_RING, mmap() it, and then frees it. This flaw allows a local user to crash or potentially escalate their privileges on the system.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
kernelRed Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9public PoCs found — 7
vulncheckvulncheck.com/xdb/494d2265863funverifiedvulncheckvulncheck.com/xdb/3310aa824bc4unverifiedvulncheckvulncheck.com/xdb/ec7832b63942unverifiedvulncheckvulncheck.com/xdb/3c50fe9f072cunverifiedvulncheckvulncheck.com/xdb/a072578b3a49unverifiedvulncheckvulncheck.com/xdb/bfb1c1ee8b94unverifiedvulncheckvulncheck.com/xdb/a6f992529075unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://access.redhat.com/security/cve/CVE-2024-0582https://bugs.chromium.org/p/project-zero/issues/detail?id=2504https://bugzilla.redhat.com/show_bug.cgi?id=2254050https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c392cbecd8eca4c53f2bf508731257d9d0a21c2dhttp://www.openwall.com/lists/oss-security/2024/04/24/3