CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
5.1%
In the Linux kernel, the following vulnerability has been resolved:
net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()
During driver initialization, the pointer of card info, i.e. the
variable ‘ci’ is required. However, the definition of
‘com20020pci_id_table’ reveals that this field is empty for some
devices, which will cause null pointer dereference when initializing
these devices.
The following log reveals it:
[ 3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
[ 3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci]
[ 3.975181] Call Trace:
[ 3.976208] local_pci_probe+0x13f/0x210
[ 3.977248] pci_device_probe+0x34c/0x6d0
[ 3.977255] ? pci_uevent+0x470/0x470
[ 3.978265] really_probe+0x24c/0x8d0
[ 3.978273] __driver_probe_device+0x1b3/0x280
[ 3.979288] driver_probe_device+0x50/0x370
Fix this by checking whether the ‘ci’ is a null pointer first.
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | 5.17 | cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* |
linux | linux_kernel | 5.17 | cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* |
linux | linux_kernel | 5.17 | cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:* |
linux | linux_kernel | 5.17 | cpe:2.3:o:linux:linux_kernel:5.17:rc4:*:*:*:*:*:* |
linux | linux_kernel | 5.17 | cpe:2.3:o:linux:linux_kernel:5.17:rc5:*:*:*:*:*:* |
linux | linux_kernel | 5.17 | cpe:2.3:o:linux:linux_kernel:5.17:rc6:*:*:*:*:*:* |
git.kernel.org/stable/c/5f394102ee27dbf051a4e283390cd8d1759dacea
git.kernel.org/stable/c/8e3bc7c5bbf87e86e9cd652ca2a9166942d86206
git.kernel.org/stable/c/b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049
git.kernel.org/stable/c/b838add93e1dd98210482dc433768daaf752bdef
git.kernel.org/stable/c/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d
git.kernel.org/stable/c/ca0bdff4249a644f2ca7a49d410d95b8dacf1f72
git.kernel.org/stable/c/e50c589678e50f8d574612e473ca60ef45190896
git.kernel.org/stable/c/ea372aab54903310756217d81610901a8e66cb7d