UBUNTU-CVE-2021-28972
In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
6 explicit affected versions
57 explicit affected versions
191 explicit affected versions
65 explicit affected versions
26 explicit affected versions
45 explicit affected versions
18 explicit affected versions
75 explicit affected versions
23 explicit affected versions
69 explicit affected versions
1 explicit affected versions
1 explicit affected versions
18 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
1 explicit affected versions
28 explicit affected versions
36 explicit affected versions
27 explicit affected versions
20 explicit affected versions
10 explicit affected versions
135 explicit affected versions
13 explicit affected versions
68 explicit affected versions
42 explicit affected versions
1 explicit affected versions
10 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
59 explicit affected versions
1 explicit affected versions
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33 explicit affected versions
10 explicit affected versions
44 explicit affected versions
11 explicit affected versions
67 explicit affected versions
28 explicit affected versions
2 explicit affected versions
62 explicit affected versions
24 explicit affected versions
1 explicit affected versions
8 explicit affected versions
21 explicit affected versions
1 explicit affected versions
1 explicit affected versions
24 explicit affected versions
18 explicit affected versions
1 explicit affected versions
19 explicit affected versions
1 explicit affected versions
21 explicit affected versions
8 explicit affected versions
17 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
38 explicit affected versions
9 explicit affected versions
112 explicit affected versions
18 explicit affected versions
47 explicit affected versions
2 explicit affected versions
75 explicit affected versions
52 explicit affected versions
12 explicit affected versions
43 explicit affected versions
17 explicit affected versions
43 explicit affected versions
1 explicit affected versions
90 explicit affected versions
90 explicit affected versions
12 explicit affected versions
21 explicit affected versions
4 explicit affected versions
8 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8, the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination, aka CID-cc7a0bb058b8.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/cc7a0bb058b85ea03db87169c60c7cfdd5d34678
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc7a0bb058b85ea03db87169c60c7cfdd5d34678
- https://ubuntu.com/security/CVE-2021-28972
- https://ubuntu.com/security/notices/USN-4948-1
- https://ubuntu.com/security/notices/USN-4979-1
- https://ubuntu.com/security/notices/USN-4982-1
- https://ubuntu.com/security/notices/USN-4984-1
- https://ubuntu.com/security/notices/USN-5299-1
- https://ubuntu.com/security/notices/USN-5343-1
- https://www.cve.org/CVERecord?id=CVE-2021-28972