CVE - CVE-2024-56675

CVE-ID
CVE-2024-56675	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors Uprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU protection. But it is possible to attach a non-sleepable BPF program to a uprobe, and non-sleepable BPF programs are freed via normal RCU (see __bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal RCU grace period does not imply a tasks-trace-RCU grace period. Fix it by explicitly waiting for a tasks-trace-RCU grace period after removing the attachment of a bpf_prog to a perf_event.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a URL:https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a MISC:https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d URL:https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d MISC:https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956 URL:https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956 MISC:https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5 URL:https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5
Assigning CNA
kernel.org
Date Record Created
20241227	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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