CVE-2023-53646
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
W jądrze Linuxa rozwiązano podatność związaną z tablicami przekazywanymi do reg_in_range_table, które powinny kończyć się pustym rekordem. Poprawka rozwiązuje błąd wykryty przez KASAN związany z odczytem poza granicami tablicy.
Risk Assessment
Podatność może prowadzić do nieprzewidzianego zachowania systemu, co może skutkować awarią lub naruszeniem integralności danych. W przypadku wykorzystania tej luki, atakujący może uzyskać dostęp do pamięci poza przydzielonym obszarem.
Recommendation
Zaleca się aktualizację jądra Linux do najnowszej wersji, aby zastosować poprawki eliminujące tę podatność. Regularne monitorowanie i aktualizowanie systemów jest kluczowe dla zapewnienia bezpieczeństwa.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: drm/i915/perf: add sentinel to xehp_oa_b_counters Arrays passed to reg_in_range_table should end with empty record. The patch solves KASAN detected bug with signature: BUG: KASAN: global-out-of-bounds in xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915] Read of size 4 at addr ffffffffa1555d90 by task perf/1518 CPU: 4 PID: 1518 Comm: perf Tainted: G U 6.4.0-kasan_438-g3303d06107f3+ #1 Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P DDR5 SODIMM SBS RVP, BIOS MTLPFWI1.R00.3223.D80.2305311348 05/31/2023 Call Trace: <TASK> ... xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915] (cherry picked from commit 2f42c5afb34b5696cf5fe79e744f99be9b218798)

