UBUNTU-CVE-2021-35477
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.
02 / AFFECTED SOFTWARE
Affected packages
33 explicit affected versions
85 explicit affected versions
118 explicit affected versions
4 explicit affected versions
121 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
111 explicit affected versions
4 explicit affected versions
1 explicit affected versions
3 explicit affected versions
36 explicit affected versions
44 explicit affected versions
4 explicit affected versions
36 explicit affected versions
120 explicit affected versions
10 explicit affected versions
20 explicit affected versions
1 explicit affected versions
20 explicit affected versions
144 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
1 explicit affected versions
38 explicit affected versions
33 explicit affected versions
10 explicit affected versions
188 explicit affected versions
11 explicit affected versions
5 explicit affected versions
7 explicit affected versions
36 explicit affected versions
138 explicit affected versions
2 explicit affected versions
132 explicit affected versions
165 explicit affected versions
154 explicit affected versions
32 explicit affected versions
139 explicit affected versions
116 explicit affected versions
93 explicit affected versions
1 explicit affected versions
4 explicit affected versions
15 explicit affected versions
92 explicit affected versions
1 explicit affected versions
1 explicit affected versions
98 explicit affected versions
5 explicit affected versions
26 explicit affected versions
1 explicit affected versions
26 explicit affected versions
4 explicit affected versions
1 explicit affected versions
140 explicit affected versions
94 explicit affected versions
10 explicit affected versions
24 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
20 explicit affected versions
38 explicit affected versions
167 explicit affected versions
9 explicit affected versions
26 explicit affected versions
97 explicit affected versions
7 explicit affected versions
121 explicit affected versions
4 explicit affected versions
26 explicit affected versions
43 explicit affected versions
1 explicit affected versions
12 explicit affected versions
28 explicit affected versions
4 explicit affected versions
15 explicit affected versions
1 explicit affected versions
69 explicit affected versions
50 explicit affected versions
6 explicit affected versions
4 explicit affected versions
6 explicit affected versions
57 explicit affected versions
7 explicit affected versions
191 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=2039f26f3aca5b0e419b98f65dd36481337b86ee
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=f5e81d1117501546b7be050c5fbafa6efd2c722c
- https://ubuntu.com/security/CVE-2021-35477
- https://ubuntu.com/security/notices/USN-5092-1
- https://ubuntu.com/security/notices/USN-5092-2
- https://ubuntu.com/security/notices/USN-5096-1
- https://ubuntu.com/security/notices/USN-5115-1
- https://ubuntu.com/security/notices/USN-5137-1
- https://ubuntu.com/security/notices/USN-5137-2
- https://www.cve.org/CVERecord?id=CVE-2021-35477
- https://www.openwall.com/lists/oss-security/2021/08/01/3