CVE-2024-35894
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-35894
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-35894.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-35894
- Downstream
- Published
- 2024-05-19T09:15:10Z
- Modified
- 2025-03-21T18:15:32Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mptcp: prevent BPF accessing lowat from a subflow socket.
Alexei reported the following splat:
WARNING: CPU: 32 PID: 3276 at net/mptcp/subflow.c:1430 subflowdataready+0x147/0x1c0 Modules linked in: dummy bpftestmod(O) [last unloaded: bpftestnocfi(O)] CPU: 32 PID: 3276 Comm: testprogs Tainted: GO 6.8.0-12873-g2c43c33bfd23 Call Trace: <TASK> mptcpsetrcvlowat+0x79/0x1d0 sksetsockopt+0x6c0/0x1540 _bpfsetsockopt+0x6f/0x90 bpfsockopssetsockopt+0x3c/0x90 bpfprog509ce5db2c7f9981bpftestsockoptint+0xb4/0x11b bpfprogdce07e362d941d2bbpftestsocketsockopt+0x12b/0x132 bpfprog348c9b5faaf10092skopssockopt+0x954/0xe86 _cgroupbpfrunfiltersockops+0xbc/0x250 tcpconnect+0x879/0x1160 tcpv6connect+0x50c/0x870 mptcpconnect+0x129/0x280 _inetstreamconnect+0xce/0x370 inetstreamconnect+0x36/0x50 bpftrampoline6442491565+0x49/0xef inetstreamconnect+0x5/0x50 _sysconnect+0x63/0x90 _x64sys_connect+0x14/0x20
The root cause of the issue is that bpf allows accessing mptcp-level proto_ops from a tcp subflow scope.
Fix the issue detecting the problematic call and preventing any action.
- References
-
- https://security.netapp.com/advisory/ntap-20250321-0002/
- https://git.kernel.org/stable/c/3ffb1ab698376f09cc33101c07c1be229389fe29
- https://git.kernel.org/stable/c/ee3c845787b621cfe82c2e52c513024a9d7a78f5
- https://git.kernel.org/stable/c/fcf4692fa39e86a590c14a4af2de704e1d20a3b5
- https://security-tracker.debian.org/tracker/CVE-2024-35894
Affected packages
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source