The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - fbdev: rivafb: fix divide error in nv3_arb() A userspace program can trigger the RIVA NV3 arbitration code     by calling the FBIOPUT_VSCREENINFO ioctl on /dev/fb*. When doing so, the driver recomputes FIFO     arbitration parameters in nv3_arb(), using state->mclk_khz (derived from the PRAMDAC MCLK PLL) as a     divisor without validating it first. In a normal setup, state->mclk_khz is provided by the real hardware     and is non-zero. However, an attacker can construct a malicious or misconfigured device (e.g. a     crafted/emulated PCI device) that exposes a bogus PLL configuration, causing state->mclk_khz to become     zero. Once nv3_get_param() calls nv3_arb(), the division by state->mclk_khz in the gns calculation causes     a divide error and crashes the kernel. Fix this by checking whether state->mclk_khz is zero and bailing     out before doing the division. The following log reveals it: rivafb: setting virtual Y resolution to 2184     divide error: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 PID: 2187 Comm: syz-executor.0 Not tainted     5.18.0-rc1+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS     rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:nv3_arb     drivers/video/fbdev/riva/riva_hw.c:439 [inline] RIP: 0010:nv3_get_param+0x3ab/0x13b0     drivers/video/fbdev/riva/riva_hw.c:546 Call Trace: nv3CalcArbitration.constprop.0+0x255/0x460     drivers/video/fbdev/riva/riva_hw.c:603 nv3UpdateArbitrationSettings drivers/video/fbdev/riva/riva_hw.c:637     [inline] CalcStateExt+0x447/0x1b90 drivers/video/fbdev/riva/riva_hw.c:1246     riva_load_video_mode+0x8a9/0xea0 drivers/video/fbdev/riva/fbdev.c:779 rivafb_set_par+0xc0/0x5f0     drivers/video/fbdev/riva/fbdev.c:1196 fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1033     do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1109 fb_ioctl+0xdd/0x130     drivers/video/fbdev/core/fbmem.c:1188 __x64_sys_ioctl+0x122/0x190 fs/ioctl.c:856 (CVE-2026-23266)

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Linux Distros Unpatched Vulnerability : CVE-2026-23266

medium Nessus Plugin ID 303156

Version 1.7

Version 1.6

Version 1.5

Version 1.3

Version 1.2

Version 1.1

Version 1.7 Jun 30, 2026, 11:58 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202606301158
Version 1.6 Jun 28, 2026, 2:21 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202606281421
Version 1.5 May 25, 2026, 10:30 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605252230
Version 1.3 May 20, 2026, 10:33 PM Plugin metadata Detection (updated detection logic) Plugin Feed: 202605202233
Version 1.2 Mar 24, 2026, 8:21 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202603242021
Version 1.1 Mar 21, 2026, 9:15 AM New Plugin Feed: 202603210915