CVE-2023-52454
Description
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length If the host sends an H2CData command with an invalid DATAL, the kernel may crash in nvmet_tcp_build_pdu_iovec(). Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp] Call trace: process_one_work+0x174/0x3c8 worker_thread+0x2d0/0x3e8 kthread+0x104/0x110 Fix the bug by raising a fatal error if DATAL isn't coherent with the packet size. Also, the PDU length should never exceed the MAXH2CDATA parameter which has been communicated to the host in nvmet_tcp_handle_icreq().
How to fix
- linux linux_kernel5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.0.0 ≤ v < 5.4.268, 5.5.0 ≤ v < 5.10.209, 5.11.0 ≤ v < 5.15.148, 5.16.0 ≤ v < 6.1.75, 6.2.0 ≤ v < 6.6.14, 6.7.0 ≤ v < 6.7.2 | 5.4.268, 5.10.209, 5.15.148, 6.1.75, 6.6.14, 6.7.2 |
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