UBUNTU-CVE-2023-52787

In the Linux kernel, the following vulnerability has been resolved: blk-mq: make sure active queue usage is held for biointegrityprep blkintegrityunregister can come if queue usage counter isn't held for one bio with integrity prepared, so this request may be completed with calling...

UBUNTU-CVE-2023-52774

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: protect device queue against concurrent access In dasdprofilestart the amount of requests on the device queue are counted. The access to the device queue is unprotected against concurrent access. With a lot of parallel...

CVE-2023-52872 tty: n_gsm: fix race condition in status line change on dead connections

In the Linux kernel, the following vulnerability has been resolved: tty: ngsm: fix race condition in status line change on dead connections gsmcleanupmux cleans up the gsm by closing all DLCIs, stopping all timers, removing the virtual tty devices and clearing the data queues. This procedure,...

CVE-2023-52872 tty: n_gsm: fix race condition in status line change on dead connections

In the Linux kernel, the following vulnerability has been resolved: tty: ngsm: fix race condition in status line change on dead connections gsmcleanupmux cleans up the gsm by closing all DLCIs, stopping all timers, removing the virtual tty devices and clearing the data queues. This procedure,...

CVE-2023-52872 tty: n_gsm: fix race condition in status line change on dead connections

In the Linux kernel, the following vulnerability has been resolved: tty: ngsm: fix race condition in status line change on dead connections gsmcleanupmux cleans up the gsm by closing all DLCIs, stopping all timers, removing the virtual tty devices and clearing the data queues. This procedure,...

CVE-2023-52872

The CVE-2023-52872 vulnerability affects the Linux kernel tty/n_gsm subsystem. A race in gsm_cleanup_mux() during the cleanup of GSM DLCIs can spuriously change virtual modem status lines while data/timers are being torn down, risking a kernel panic when resources have already been removed. The f...

CVE-2023-52872

In the Linux kernel, the following vulnerability has been resolved: tty: ngsm: fix race condition in status line change on dead connections gsmcleanupmux cleans up the gsm by closing all DLCIs, stopping all timers, removing the virtual tty devices and clearing the data queues. This procedure,...

CVE-2023-52848 f2fs: fix to drop meta_inode's page cache in f2fs_put_super()

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to drop metainode's page cache in f2fsputsuper syzbot reports a kernel bug as below: F2FS-fs loop1: detect filesystem reference count leak during umount, type: 10, count: 1 kernel BUG at fs/f2fs/super.c:1639! CPU: 0 PID...

CVE-2023-52848

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to drop metainode's page cache in f2fsputsuper syzbot reports a kernel bug as below: F2FS-fs loop1: detect filesystem reference count leak during umount, type: 10, count: 1 kernel BUG at fs/f2fs/super.c:1639! CPU: 0 PID...

CVE-2023-52848

Summary (CVE-2023-52848) : The issue, reported for the Linux kernel’s f2fs file system, centers on a bug during f2fs_put_super() where the meta_inode page cache is not dropped after an IO error in f2fs_wait_on_all_pages. This can lead to a reference-count leak and a kernel panic during unmount. T...

CVE-2023-52839 drivers: perf: Do not broadcast to other cpus when starting a counter

In the Linux kernel, the following vulnerability has been resolved: drivers: perf: Do not broadcast to other cpus when starting a counter This command: $ perf record -e cycles:k -e instructions:k -c 10000 -m 64M dd if=/dev/zero of=/dev/null count=1000 gives rise to this kernel warning: 444.364395...

CVE-2023-52831

In the Linux kernel, the following vulnerability has been resolved: cpu/hotplug: Don't offline the last non-isolated CPU If a system has isolated CPUs via the "isolcpus=" command line parameter, then an attempt to offline the last housekeeping CPU will result in a WARNON when rebuilding the...

CVE-2023-52831

CVE-2023-52831 (Linux kernel) : The issue resides in cpu/hotplug logic when CPUs are isolated with isolcpus=. Offline-ing the last non-isolated (housekeeping) CPU can cause a WARN_ON in build_sched_domains and a subsequent panic due to an empty CPU mask in partition_sched_domains_locked(), leadin...

CVE-2023-52811 scsi: ibmvfc: Remove BUG_ON in the case of an empty event pool

In the Linux kernel, the following vulnerability has been resolved: scsi: ibmvfc: Remove BUGON in the case of an empty event pool In practice the driver should never send more commands than are allocated to a queue's event pool. In the unlikely event that this happens, the code asserts a BUGON, a...

CVE-2023-52797 drivers: perf: Check find_first_bit() return value

In the Linux kernel, the following vulnerability has been resolved: drivers: perf: Check findfirstbit return value We must check the return value of findfirstbit before using the return value as an index array since it happens to overflow the array and then panic: 107.318430 Kernel BUG 1 107.3194...

CVE-2023-52791

CVE-2023-52791 affects the Linux kernel i2c core: Run atomic i2c xfer when !preemptible to ensure atomicity during restart sequences, preventing voluntary context switches within RCU read-side critical sections. The fix, tied to preemption handling (switching to !preemptible()), aligns with pre-v...

CVE-2023-52791 i2c: core: Run atomic i2c xfer when !preemptible

In the Linux kernel, the following vulnerability has been resolved: i2c: core: Run atomic i2c xfer when !preemptible Since bae1d3a05a8b, i2c transfers are non-atomic if preemption is disabled. However, non-atomic i2c transfers require preemption e.g. in waitforcompletion while waiting for the DMA...

CVE-2023-52791

In the Linux kernel, the following vulnerability has been resolved: i2c: core: Run atomic i2c xfer when !preemptible Since bae1d3a05a8b, i2c transfers are non-atomic if preemption is disabled. However, non-atomic i2c transfers require preemption e.g. in waitforcompletion while waiting for the DMA...

CVE-2023-52787 blk-mq: make sure active queue usage is held for bio_integrity_prep()

In the Linux kernel, the following vulnerability has been resolved: blk-mq: make sure active queue usage is held for biointegrityprep blkintegrityunregister can come if queue usage counter isn't held for one bio with integrity prepared, so this request may be completed with calling...

CVE-2023-52787 blk-mq: make sure active queue usage is held for bio_integrity_prep()

In the Linux kernel, the following vulnerability has been resolved: blk-mq: make sure active queue usage is held for biointegrityprep blkintegrityunregister can come if queue usage counter isn't held for one bio with integrity prepared, so this request may be completed with calling...