HollowByte je zranitelnost typu Denial of Service (DoS) v kryptografické knihovně OpenSSL. Útočník může odesíláním škodlivého payloadu o velikosti pouhých 11 bajtů zaplnit paměť serveru. OpenSSL před ověřením dat vyhradí nepřiměřený blok paměti (až 131 KB). Server pak čeká na data, která nepřišla. Zranitelnost je opravena ve verzích OpenSSL 4.0.1, 3.6.3, 3.5.7, 3.4.6 a 3.0.21.
Ve španělské A Coruñě probíhá GUADEC 2026, tj. letošní konference vývojářů a uživatelů desktopového prostředí GNOME. Videozáznamy přednášek jsou k dispozici na YouTube.
Společnost Collabora ve spolupráci s Valve vyvíjí Holo Core, tj. port Arch Linuxu pro ARM64 procesory (AArch64), který bude pohánět VR headset Steam Frame. Pro testování Arch Linuxu pro AArch64 jsou k dispozici binární balíčky, zdrojové kódy i kontejner pro Docker nebo Podman.
Mikroprocesor Zilog Z80 byl oficiálně uveden na trh před 50 lety, tj. v červenci 1976. Výroba mikroprocesoru skončila v roce 2024.
Výzkumníci ze společnosti ESET objevili 11 zapomenutých UEFI shim zavaděčů, které byly podepsány společností Microsoft, a které umožňují útočníkům obejít ochranu UEFI Secure Boot na většině zařízení. Microsoft je zneplatnil (přidal jejich hash do databáze dbx) v rámci aktualizace Patch Tuesday dne 9. června 2026. Uživatelé Linuxu mohou databází aktualizovat pomocí LVFS. Ověřit zneplatnění zavaděčů lze pomocí skriptu uefi-dbx-audit. Jedná se o CVE-2026-8863 a CVE-2026-10797.
pico-usb-wifi je open source firmware pro Raspberry Pi Pico W, který jej promění v USB Wi-Fi adaptér. Po připojení k počítači se objeví jako zařízení USB CDC-NCM.
Americká společnost Google ze skupiny Alphabet bude muset podle nových požadavků Evropské unie umožnit společnosti OpenAI i dalším konkurentům v oblasti umělé inteligence (AI) a internetových vyhledávačů přístup ke svým službám. Ve svém rozhodnutí o tom včera informovala Evropská komise (EK). Opatření má zajistit dodržování pravidel, jejichž cílem je omezit v EU tržní sílu velkých technologických firem. Google s tím nesouhlasí.
… více »Nové verze webových prohlížečů Chrome a Firefox jsou vydávány každé 4 týdny. Aktuální verze Chrome je 150. Aktuální verze Firefoxu je 152. V březnu bylo oznámeno, že od září přejde Chrome na dvoutýdenní cyklus vydávání verzí. To by znamenalo, že Chrome v číslování verzí Firefox brzy přeskočí. Vývojáři Firefoxu proto také od září přecházejí na dvoutýdenní cyklus vydávání verzí. :-)
Microsoft Comic Chat (Wikipedie), tj. grafický IRC klient z devadesátek, který převáděl konverzace na IRC do podoby komiksových panelů, a který zpopularizoval font Comic Sans, je dnešním dnem open source. Zdrojové kódy jsou k dispozici na GitHubu pod licencí MIT.
Byla vydána (𝕏) nová verze 26.7 open source firewallové a routovací platformy OPNsense (Wikipedie). Jedná se o fork pfSense postavený na FreeBSD. Kódový název OPNsense 26.7 je Xenial Xenops. Přehled novinek v příspěvku na fóru.
Aug 4 00:46:43 localhost kernel: [ 45.529338] ata1.00: exception Emask 0x0 SAct 0x10 SErr 0x0 action 0x0
Aug 4 00:46:43 localhost kernel: [ 45.529506] ata1.00: irq_stat 0x40000008
Aug 4 00:46:43 localhost kernel: [ 45.529599] ata1.00: failed command: READ FPDMA QUEUED
Aug 4 00:46:43 localhost kernel: [ 45.529725] ata1.00: cmd 60/88:20:78:31:cb/00:00:00:00:00/40 tag 4 ncq 69632 in
Aug 4 00:46:43 localhost kernel: [ 45.529725] res 41/40:00:b7:31:cb/00:00:00:00:00/40 Emask 0x409 (media error) F
Aug 4 00:46:43 localhost kernel: [ 45.530115] ata1.00: status: { DRDY ERR }
Aug 4 00:46:43 localhost kernel: [ 45.530226] ata1.00: error: { UNC }
Aug 4 00:46:43 localhost kernel: [ 45.539948] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:46:43 localhost kernel: [ 45.540976] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:46:43 localhost kernel: [ 45.540985] ata1.00: configured for UDMA/133
Aug 4 00:46:43 localhost kernel: [ 45.541104] sd 0:0:0:0: [sda] Unhandled sense code
Aug 4 00:46:43 localhost kernel: [ 45.541112] sd 0:0:0:0: [sda]
Aug 4 00:46:43 localhost kernel: [ 45.541117] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 00:46:43 localhost kernel: [ 45.541124] sd 0:0:0:0: [sda]
Aug 4 00:46:43 localhost kernel: [ 45.541130] Sense Key : Medium Error [current] [descriptor]
Aug 4 00:46:43 localhost kernel: [ 45.541138] Descriptor sense data with sense descriptors (in hex):
Aug 4 00:46:43 localhost kernel: [ 45.541142] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
Aug 4 00:46:43 localhost kernel: [ 45.541168] 00 cb 31 b7
Aug 4 00:46:43 localhost kernel: [ 45.541179] sd 0:0:0:0: [sda]
Aug 4 00:46:43 localhost kernel: [ 45.541188] Add. Sense: Unrecovered read error - auto reallocate failed
Aug 4 00:46:43 localhost kernel: [ 45.541194] sd 0:0:0:0: [sda] CDB:
Aug 4 00:46:43 localhost kernel: [ 45.541199] Read(10): 28 00 00 cb 31 78 00 00 88 00
Aug 4 00:46:43 localhost kernel: [ 45.541218] end_request: I/O error, dev sda, sector 13316535
Aug 4 00:46:43 localhost kernel: [ 45.541368] Buffer I/O error on device dm-1, logical block 54
Aug 4 00:46:43 localhost kernel: [ 45.541498] Buffer I/O error on device dm-1, logical block 55
Aug 4 00:46:43 localhost kernel: [ 45.541631] Buffer I/O error on device dm-1, logical block 56
Aug 4 00:46:43 localhost kernel: [ 45.541762] Buffer I/O error on device dm-1, logical block 57
Aug 4 00:46:43 localhost kernel: [ 45.546169] Buffer I/O error on device dm-1, logical block 58
Aug 4 00:46:43 localhost kernel: [ 45.550192] Buffer I/O error on device dm-1, logical block 59
Aug 4 00:46:43 localhost kernel: [ 45.554161] Buffer I/O error on device dm-1, logical block 60
Aug 4 00:46:43 localhost kernel: [ 45.558022] Buffer I/O error on device dm-1, logical block 61
Aug 4 00:46:43 localhost kernel: [ 45.561835] Buffer I/O error on device dm-1, logical block 62
Aug 4 00:46:43 localhost kernel: [ 45.565578] ata1: EH complete
Aug 4 00:46:48 localhost kernel: [ 49.891198] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
Aug 4 00:46:48 localhost kernel: [ 49.894977] ata1.00: irq_stat 0x40000008
Aug 4 00:46:48 localhost kernel: [ 49.898656] ata1.00: failed command: READ FPDMA QUEUED
Aug 4 00:46:48 localhost kernel: [ 49.902311] ata1.00: cmd 60/08:00:b0:31:cb/00:00:00:00:00/40 tag 0 ncq 4096 in
Aug 4 00:46:48 localhost kernel: [ 49.902311] res 41/40:00:b7:31:cb/00:00:00:00:00/40 Emask 0x409 (media error) F
Aug 4 00:46:48 localhost kernel: [ 49.909649] ata1.00: status: { DRDY ERR }
Aug 4 00:46:48 localhost kernel: [ 49.913417] ata1.00: error: { UNC }
Aug 4 00:46:48 localhost kernel: [ 49.935161] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:46:48 localhost kernel: [ 49.936191] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:46:48 localhost kernel: [ 49.936207] ata1.00: configured for UDMA/133
Aug 4 00:46:48 localhost kernel: [ 49.936259] sd 0:0:0:0: [sda] Unhandled sense code
Aug 4 00:46:48 localhost kernel: [ 49.936266] sd 0:0:0:0: [sda]
Aug 4 00:46:48 localhost kernel: [ 49.936272] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 00:46:48 localhost kernel: [ 49.936279] sd 0:0:0:0: [sda]
Aug 4 00:46:48 localhost kernel: [ 49.936284] Sense Key : Medium Error [current] [descriptor]
Aug 4 00:46:48 localhost kernel: [ 49.936294] Descriptor sense data with sense descriptors (in hex):
Aug 4 00:46:48 localhost kernel: [ 49.936298] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
Aug 4 00:46:48 localhost kernel: [ 49.936317] 00 cb 31 b7
Aug 4 00:46:48 localhost kernel: [ 49.936327] sd 0:0:0:0: [sda]
Aug 4 00:46:48 localhost kernel: [ 49.936336] Add. Sense: Unrecovered read error - auto reallocate failed
Aug 4 00:46:48 localhost kernel: [ 49.936343] sd 0:0:0:0: [sda] CDB:
Aug 4 00:46:48 localhost kernel: [ 49.936348] Read(10): 28 00 00 cb 31 b0 00 00 08 00
Aug 4 00:46:48 localhost kernel: [ 49.936372] end_request: I/O error, dev sda, sector 13316535
Aug 4 00:46:48 localhost kernel: [ 49.940654] ata1: EH complete
Aug 4 00:46:52 localhost kernel: [ 54.008288] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
Aug 4 00:46:52 localhost kernel: [ 54.012380] ata1.00: irq_stat 0x40000008
Aug 4 00:46:52 localhost kernel: [ 54.016506] ata1.00: failed command: READ FPDMA QUEUED
Aug 4 00:46:52 localhost kernel: [ 54.020648] ata1.00: cmd 60/08:00:b0:31:cb/00:00:00:00:00/40 tag 0 ncq 4096 in
Aug 4 00:46:52 localhost kernel: [ 54.020648] res 41/40:00:b7:31:cb/00:00:00:00:00/40 Emask 0x409 (media error) F
Aug 4 00:46:52 localhost kernel: [ 54.029214] ata1.00: status: { DRDY ERR }
Aug 4 00:46:52 localhost kernel: [ 54.033620] ata1.00: error: { UNC }
Aug 4 00:46:52 localhost kernel: [ 54.052249] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:46:52 localhost kernel: [ 54.053530] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:46:52 localhost kernel: [ 54.053539] ata1.00: configured for UDMA/133
Aug 4 00:46:52 localhost kernel: [ 54.053570] sd 0:0:0:0: [sda] Unhandled sense code
Aug 4 00:46:52 localhost kernel: [ 54.053577] sd 0:0:0:0: [sda]
Aug 4 00:46:52 localhost kernel: [ 54.053583] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 00:46:52 localhost kernel: [ 54.053590] sd 0:0:0:0: [sda]
Aug 4 00:46:52 localhost kernel: [ 54.053595] Sense Key : Medium Error [current] [descriptor]
Aug 4 00:46:52 localhost kernel: [ 54.053605] Descriptor sense data with sense descriptors (in hex):
Aug 4 00:46:52 localhost kernel: [ 54.053609] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
Aug 4 00:46:52 localhost kernel: [ 54.053630] 00 cb 31 b7
Aug 4 00:46:52 localhost kernel: [ 54.053641] sd 0:0:0:0: [sda]
Aug 4 00:46:52 localhost kernel: [ 54.053650] Add. Sense: Unrecovered read error - auto reallocate failed
Aug 4 00:46:52 localhost kernel: [ 54.053657] sd 0:0:0:0: [sda] CDB:
Aug 4 00:46:52 localhost kernel: [ 54.053662] Read(10): 28 00 00 cb 31 b0 00 00 08 00
Aug 4 00:46:52 localhost kernel: [ 54.053682] end_request: I/O error, dev sda, sector 13316535
Aug 4 00:46:52 localhost kernel: [ 54.057978] quiet_error: 2 callbacks suppressed
Aug 4 00:46:52 localhost kernel: [ 54.058001] Buffer I/O error on device dm-1, logical block 54
Aug 4 00:46:52 localhost kernel: [ 54.062423] ata1: EH complete
Aug 4 00:46:56 localhost kernel: [ 58.414691] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
Aug 4 00:46:56 localhost kernel: [ 58.419101] ata1.00: irq_stat 0x40000008
Aug 4 00:46:56 localhost kernel: [ 58.423471] ata1.00: failed command: READ FPDMA QUEUED
Aug 4 00:46:56 localhost kernel: [ 58.427773] ata1.00: cmd 60/08:00:b0:31:cb/00:00:00:00:00/40 tag 0 ncq 4096 in
Aug 4 00:46:56 localhost kernel: [ 58.427773] res 41/40:00:b7:31:cb/00:00:00:00:00/40 Emask 0x409 (media error) F
Aug 4 00:46:56 localhost kernel: [ 58.436357] ata1.00: status: { DRDY ERR }
Aug 4 00:46:56 localhost kernel: [ 58.440693] ata1.00: error: { UNC }
Aug 4 00:46:56 localhost kernel: [ 58.458641] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:46:56 localhost kernel: [ 58.459709] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:46:56 localhost kernel: [ 58.459717] ata1.00: configured for UDMA/133
Aug 4 00:46:56 localhost kernel: [ 58.459749] sd 0:0:0:0: [sda] Unhandled sense code
Aug 4 00:46:56 localhost kernel: [ 58.459756] sd 0:0:0:0: [sda]
Aug 4 00:46:56 localhost kernel: [ 58.459761] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 00:46:56 localhost kernel: [ 58.459768] sd 0:0:0:0: [sda]
Aug 4 00:46:56 localhost kernel: [ 58.459773] Sense Key : Medium Error [current] [descriptor]
Aug 4 00:46:56 localhost kernel: [ 58.459781] Descriptor sense data with sense descriptors (in hex):
Aug 4 00:46:56 localhost kernel: [ 58.459785] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
Aug 4 00:46:56 localhost kernel: [ 58.459807] 00 cb 31 b7
Aug 4 00:46:56 localhost kernel: [ 58.459817] sd 0:0:0:0: [sda]
Aug 4 00:46:56 localhost kernel: [ 58.459826] Add. Sense: Unrecovered read error - auto reallocate failed
Aug 4 00:46:56 localhost kernel: [ 58.459832] sd 0:0:0:0: [sda] CDB:
Aug 4 00:46:56 localhost kernel: [ 58.459837] Read(10): 28 00 00 cb 31 b0 00 00 08 00
Aug 4 00:46:56 localhost kernel: [ 58.459857] end_request: I/O error, dev sda, sector 13316535
Aug 4 00:46:56 localhost kernel: [ 58.464164] Buffer I/O error on device dm-1, logical block 54
Aug 4 00:46:56 localhost kernel: [ 58.468731] ata1: EH complete
Aug 4 00:47:00 localhost kernel: [ 62.498397] ata1.00: exception Emask 0x0 SAct 0x3 SErr 0x0 action 0x0
Aug 4 00:47:00 localhost kernel: [ 62.502800] ata1.00: irq_stat 0x40000008
Aug 4 00:47:00 localhost kernel: [ 62.507205] ata1.00: failed command: READ FPDMA QUEUED
Aug 4 00:47:00 localhost kernel: [ 62.511483] ata1.00: cmd 60/08:00:b0:31:cb/00:00:00:00:00/40 tag 0 ncq 4096 in
Aug 4 00:47:00 localhost kernel: [ 62.511483] res 41/40:00:b7:31:cb/00:00:00:00:00/40 Emask 0x409 (media error) F
Aug 4 00:47:00 localhost kernel: [ 62.520127] ata1.00: status: { DRDY ERR }
Aug 4 00:47:00 localhost kernel: [ 62.524474] ata1.00: error: { UNC }
Aug 4 00:47:00 localhost kernel: [ 62.542340] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:47:00 localhost kernel: [ 62.543457] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
Aug 4 00:47:00 localhost kernel: [ 62.543466] ata1.00: configured for UDMA/133
Aug 4 00:47:00 localhost kernel: [ 62.543498] sd 0:0:0:0: [sda] Unhandled sense code
Aug 4 00:47:00 localhost kernel: [ 62.543505] sd 0:0:0:0: [sda]
Aug 4 00:47:00 localhost kernel: [ 62.543510] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Aug 4 00:47:00 localhost kernel: [ 62.543517] sd 0:0:0:0: [sda]
Aug 4 00:47:00 localhost kernel: [ 62.543522] Sense Key : Medium Error [current] [descriptor]
Aug 4 00:47:00 localhost kernel: [ 62.543531] Descriptor sense data with sense descriptors (in hex):
Aug 4 00:47:00 localhost kernel: [ 62.543535] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
Aug 4 00:47:00 localhost kernel: [ 62.543554] 00 cb 31 b7
Aug 4 00:47:00 localhost kernel: [ 62.543565] sd 0:0:0:0: [sda]
Aug 4 00:47:00 localhost kernel: [ 62.543574] Add. Sense: Unrecovered read error - auto reallocate failed
Aug 4 00:47:00 localhost kernel: [ 62.543580] sd 0:0:0:0: [sda] CDB:
Aug 4 00:47:00 localhost kernel: [ 62.543585] Read(10): 28 00 00 cb 31 b0 00 00 08 00
Aug 4 00:47:00 localhost kernel: [ 62.543603] end_request: I/O error, dev sda, sector 13316535
Aug 4 00:47:00 localhost kernel: [ 62.547922] Buffer I/O error on device dm-1, logical block 54
Aug 4 00:47:00 localhost kernel: [ 62.552502] ata1: EH complete
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