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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-117.132 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1078.84 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1128.137~16.04.1 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < 5.4.0-1083.87 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-azure | < 4.15.0-1138.151~14.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.15.0-1138.151~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure-4.15 | < any | UNKNOWN |
git.kernel.org/linus/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d (5.17-rc7)
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
launchpad.net/bugs/cve/CVE-2022-48908
nvd.nist.gov/vuln/detail/CVE-2022-48908
security-tracker.debian.org/tracker/CVE-2022-48908
www.cve.org/CVERecord?id=CVE-2022-48908