Ubuntu.comUB:CVE-2023-52633CVE-2023-52633
In the Linux kernel, the following vulnerability has been resolved: um:
time-travel: fix time corruption In ‘basic’ time-travel mode (without
=inf-cpu or =ext), we still get timer interrupts. These can happen at
arbitrary points in time, i.e. while in timer_read(), which pushes time
forward just a little bit. Then, if we happen to get the interrupt after
calculating the new time to push to, but before actually finishing that,
the interrupt will set the time to a value that’s incompatible with the
forward, and we’ll crash because time goes backwards when we do the
forwarding. Fix this by reading the time_travel_time, calculating the
adjustment, and doing the adjustment all with interrupts disabled.
Notes
| Author | Note |
|---|---|
| rodrigo-zaiden | USN-6765-1 for linux-oem-6.5 wrongly stated that this CVE was fixed in version 6.5.0-1022.23. The mentioned notice was revoked and the state of the fix for linux-oem-6.5 was recovered to the previous state. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < 5.15.0-106.116 | UNKNOWN |
| ubuntu | 23.10 | noarch | linux | < 6.5.0-41.41 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1061.67 | UNKNOWN |
| ubuntu | 23.10 | noarch | linux-aws | < 6.5.0-1021.21 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws-5.15 | < 5.15.0-1061.67~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-azure | < 5.15.0-1063.72 | UNKNOWN |
References
git.kernel.org/linus/abe4eaa8618bb36c2b33e9cdde0499296a23448c (6.8-rc1)
git.kernel.org/stable/c/0c7478a2da3f5fe106b4658338873d50c86ac7ab
git.kernel.org/stable/c/4f7dad73df4cdb2b7042103d3922745d040ad025
git.kernel.org/stable/c/abe4eaa8618bb36c2b33e9cdde0499296a23448c
git.kernel.org/stable/c/b427f55e9d4185f6f17cc1e3296eb8d0c4425283
git.kernel.org/stable/c/de3e9d8e8d1ae0a4d301109d1ec140796901306c
launchpad.net/bugs/cve/CVE-2023-52633
nvd.nist.gov/vuln/detail/CVE-2023-52633
security-tracker.debian.org/tracker/CVE-2023-52633
ubuntu.com/security/notices/USN-6766-1
ubuntu.com/security/notices/USN-6766-2
ubuntu.com/security/notices/USN-6766-3
ubuntu.com/security/notices/USN-6795-1
ubuntu.com/security/notices/USN-6818-1
ubuntu.com/security/notices/USN-6818-2
ubuntu.com/security/notices/USN-6818-3
ubuntu.com/security/notices/USN-6818-4
ubuntu.com/security/notices/USN-6819-1
ubuntu.com/security/notices/USN-6819-2
ubuntu.com/security/notices/USN-6819-3
ubuntu.com/security/notices/USN-6819-4
ubuntu.com/security/notices/USN-6828-1
www.cve.org/CVERecord?id=CVE-2023-52633
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