Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
In the Linux kernel, the following vulnerability has been resolved:tracing/probes: Fix MAX_TRACE_ARGS limit handlingWhen creating a trace_probe we would set nr_args prior to truncating thearguments to MAX_TRACE_ARGS. However, we would only initialize argumentsup to the limit.This caused invalid memory access when attempting to set up probes withmore than 128 fetchargs. BUG: kernel NULL pointer dereference, address: 0000000000000020 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 UID: 0 PID: 1769 Comm: cat Not tainted 6.11.0-rc7+ #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014 RIP: 0010:__set_print_fmt+0x134/0x330Resolve the issue by applying the MAX_TRACE_ARGS limit earlier. Returnan error when there are too many arguments instead of silentlytruncating.
No PoCs from references.
- https://github.com/fkie-cad/nvd-json-data-feeds