cbcvebase.
CVE-2023-52633
published 2024-04-02

CVE-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…

PriorityP420medium5CVSS 3.1
AVLACLPRLUIRSUCNINAH
EPSS
0.23%
13.4th percentile
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.

Affected

15 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.82-1 (bookworm)linux 6.1.82-1 (bookworm)
linuxlinux
linuxlinux>= 065038706f77a56754e8f0c2556dab7e22dfe577 < 0c7478a2da3f5fe106b4658338873d50c86ac7ab0c7478a2da3f5fe106b4658338873d50c86ac7ab
linuxlinux>= 065038706f77a56754e8f0c2556dab7e22dfe577 < 4f7dad73df4cdb2b7042103d3922745d040ad0254f7dad73df4cdb2b7042103d3922745d040ad025
linuxlinux>= 065038706f77a56754e8f0c2556dab7e22dfe577 < de3e9d8e8d1ae0a4d301109d1ec140796901306cde3e9d8e8d1ae0a4d301109d1ec140796901306c
linuxlinux>= 065038706f77a56754e8f0c2556dab7e22dfe577 < b427f55e9d4185f6f17cc1e3296eb8d0c4425283b427f55e9d4185f6f17cc1e3296eb8d0c4425283
linuxlinux>= 065038706f77a56754e8f0c2556dab7e22dfe577 < abe4eaa8618bb36c2b33e9cdde0499296a23448cabe4eaa8618bb36c2b33e9cdde0499296a23448c
linuxlinux_kernel< 5.15.1495.15.149
linuxlinux_kernel>= 0 < 6.1.82-16.1.82-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 6.7.7-16.7.7-1
linuxlinux_kernel>= 0 < 5.15.0-106.1165.15.0-106.116
linuxlinux_kernel>= 5.16 < 6.1.776.1.77
linuxlinux_kernel>= 6.2 < 6.6.166.6.16
linuxlinux_kernel>= 6.7 < 6.7.46.7.4

CVSS provenance

nvdv3.15.0MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_ubuntu6.5MEDIUM
vendor_debian5.0MEDIUM
vendor_redhat5.0MEDIUM
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