The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade SLES:15.5
kernel-livepatch-5_14_21-150500_55_88-default
to version 1-150500.11.5.1 or higher.
Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-5_14_21-150500_55_88-default
package and not the kernel-livepatch-5_14_21-150500_55_88-default
package as distributed by SLES
.
See How to fix?
for SLES:15.5
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
pinctrl: ocelot: fix system hang on level based interrupts
The current implementation only calls chained_irq_enter() and chained_irq_exit() if it detects pending interrupts.
for (i = 0; i < info->stride; i++) { uregmap_read(info->map, id_reg + 4 * i, &reg); if (!reg) continue;
chained_irq_enter(parent_chip, desc);
However, in case of GPIO pin configured in level mode and the parent controller configured in edge mode, GPIO interrupt might be lowered by the hardware. In the result, if the interrupt is short enough, the parent interrupt is still pending while the GPIO interrupt is cleared; chained_irq_enter() never gets called and the system hangs trying to service the parent interrupt.
Moving chained_irq_enter() and chained_irq_exit() outside the for loop ensures that they are called even when GPIO interrupt is lowered by the hardware.
The similar code with chained_irq_enter() / chained_irq_exit() functions wrapping interrupt checking loop may be found in many other drivers:
grep -r -A 10 chained_irq_enter drivers/pinctrl