5.5

CVE-2023-52454

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().
Data is provided by the National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.0.0 < 5.4.268
Linux ≫ Linux Kernel Version >= 5.5.0 < 5.10.209
Linux ≫ Linux Kernel Version >= 5.11.0 < 5.15.148
Linux ≫ Linux Kernel Version >= 5.16.0 < 6.1.75
Linux ≫ Linux Kernel Version >= 6.2.0 < 6.6.14
Linux ≫ Linux Kernel Version >= 6.7.0 < 6.7.2
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.02% 0.046
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.