"Software developer Photon, whose product requires running a bunch of Macs to connect to iMessage, discovered a pretty major bug:
Every Mac has a hidden expiration date. After exactly 49 days, 17 hours, 2 minutes, and 47 seconds of continuous uptime, a 32-bit unsigned integer overflow in Apple’s XNU kernel freezes the internal TCP timestamp clock… ICMP (ping) keeps working. Everything else dies. The only fix most people know is a reboot"
https://sixcolors.com/link/2026/04/macs-crash-after-49-days-of-uptime/
Third Foundation
npub176…7zcvr
2026-04-08 18:15:49 UTC
Author Public Key
npub17686sgvhwe2hk7v68x7jyfqsymts2ysgekl0gffsv9uthwt0w2xs67zcvrSeen on
wss://relay.momostr.pinkPublished at
2026-04-08 18:15:49 UTCEvent JSON
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"content": "\"Software developer Photon, whose product requires running a bunch of Macs to connect to iMessage, discovered a pretty major bug:\n\nEvery Mac has a hidden expiration date. After exactly 49 days, 17 hours, 2 minutes, and 47 seconds of continuous uptime, a 32-bit unsigned integer overflow in Apple’s XNU kernel freezes the internal TCP timestamp clock… ICMP (ping) keeps working. Everything else dies. The only fix most people know is a reboot\"\nhttps://sixcolors.com/link/2026/04/macs-crash-after-49-days-of-uptime/",
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