CVE-2023-53660
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-53660
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53660.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-53660
- Downstream
- Published
- 2025-10-07T15:21:20Z
- Modified
- 2025-10-16T19:50:14.319480Z
- Summary
- bpf, cpumap: Handle skb as well when clean up ptr_ring
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf, cpumap: Handle skb as well when clean up ptr_ring
The following warning was reported when running xdpredirectcpu with both skb-mode and stress-mode enabled:
------------[ cut here ]------------ Incorrect XDP memory type (-2128176192) usage WARNING: CPU: 7 PID: 1442 at net/core/xdp.c:405 Modules linked in: CPU: 7 PID: 1442 Comm: kworker/7:0 Tainted: G 6.5.0-rc2+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Workqueue: events cpumapentryfree RIP: 0010:xdpreturn+0x1e4/0x4a0 ...... Call Trace: <TASK> ? showregs+0x65/0x70 ? _warn+0xa5/0x240 ? _xdpreturn+0x1e4/0x4a0 ...... xdpreturnframe+0x4d/0x150 _cpumapentryfree+0xf9/0x230 processonework+0x6b0/0xb80 workerthread+0x96/0x720 kthread+0x1a5/0x1f0 retfromfork+0x3a/0x70 retfromforkasm+0x1b/0x30 </TASK>
The reason for the warning is twofold. One is due to the kthread cpumapkthreadrun() is stopped prematurely. Another one is _cpumapringcleanup() doesn't handle skb mode and treats skbs in ptrring as XDP frames.
Prematurely-stopped kthread will be fixed by the preceding patch and ptrring will be empty when _cpumapringcleanup() is called. But as the comments in _cpumapringcleanup() said, handling and freeing skbs in ptrring as well to "catch any broken behaviour gracefully".
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/7c62b75cd1a792e14b037fa4f61f9b18914e7de1
- https://git.kernel.org/stable/c/937345720d18f1ad006ba3d5dcb3fa121037b8a2
- https://git.kernel.org/stable/c/b58d34068fd9f96bfc7d389988dfaf9a92a8fe00
- https://git.kernel.org/stable/c/cbd000451885801e9bbfd9cf7a7946806a85cb5e
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced11941f8a85362f612df61f4aaab0e41b64d2111dFixedb58d34068fd9f96bfc7d389988dfaf9a92a8fe00
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced11941f8a85362f612df61f4aaab0e41b64d2111dFixedcbd000451885801e9bbfd9cf7a7946806a85cb5e
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced11941f8a85362f612df61f4aaab0e41b64d2111dFixed937345720d18f1ad006ba3d5dcb3fa121037b8a2
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced11941f8a85362f612df61f4aaab0e41b64d2111dFixed7c62b75cd1a792e14b037fa4f61f9b18914e7de1