UBUNTU-CVE-2023-3389
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).
02 / AFFECTED SOFTWARE
Affected packages
16 explicit affected versions
24 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
6 explicit affected versions
33 explicit affected versions
19 explicit affected versions
30 explicit affected versions
19 explicit affected versions
26 explicit affected versions
7 explicit affected versions
27 explicit affected versions
35 explicit affected versions
6 explicit affected versions
16 explicit affected versions
13 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
1 explicit affected versions
21 explicit affected versions
16 explicit affected versions
10 explicit affected versions
7 explicit affected versions
12 explicit affected versions
17 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
12 explicit affected versions
1 explicit affected versions
37 explicit affected versions
10 explicit affected versions
7 explicit affected versions
26 explicit affected versions
13 explicit affected versions
2 explicit affected versions
29 explicit affected versions
13 explicit affected versions
30 explicit affected versions
29 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
19 explicit affected versions
11 explicit affected versions
27 explicit affected versions
9 explicit affected versions
26 explicit affected versions
13 explicit affected versions
14 explicit affected versions
30 explicit affected versions
20 explicit affected versions
3 explicit affected versions
51 explicit affected versions
12 explicit affected versions
19 explicit affected versions
11 explicit affected versions
5 explicit affected versions
7 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
13 explicit affected versions
7 explicit affected versions
22 explicit affected versions
10 explicit affected versions
5 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
16 explicit affected versions
37 explicit affected versions
38 explicit affected versions
20 explicit affected versions
9 explicit affected versions
20 explicit affected versions
10 explicit affected versions
27 explicit affected versions
7 explicit affected versions
4 explicit affected versions
1 explicit affected versions
25 explicit affected versions
43 explicit affected versions
9 explicit affected versions
8 explicit affected versions
14 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/9ca9fb24d5febccea354089c41f96a8ad0d853f8
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=4716c73b188566865bdd79c3a6709696a224ac04
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=0e388fce7aec40992eadee654193cad345d62663
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef7dfac51d8ed961b742218f526bd589f3900a59
- https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663
- https://kernel.dance/4716c73b188566865bdd79c3a6709696a224ac04
- https://kernel.dance/ef7dfac51d8ed961b742218f526bd589f3900a59
- https://ubuntu.com/security/CVE-2023-3389
- https://ubuntu.com/security/notices/USN-6246-1
- https://ubuntu.com/security/notices/USN-6248-1
- https://ubuntu.com/security/notices/USN-6249-1
- https://ubuntu.com/security/notices/USN-6250-1
- https://ubuntu.com/security/notices/USN-6255-1
- https://ubuntu.com/security/notices/USN-6260-1
- https://www.cve.org/CVERecord?id=CVE-2023-3389