CVE-2026-72268: fbdev: tdfxfb: fix potential memory leak in tdfxfb_probe()

CVE-2026-72268: fbdev: tdfxfb: fix potential memory leak in tdfxfb_probe()

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@kernel.org>

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

fbdev: tdfxfb: fix potential memory leak in tdfxfb_probe()

In tdfxfb_probe(), the memory allocated for modelist using
fb_videomode_to_modelist() when CONFIG_FB_3DFX_I2C is defined, is not
freed in the subsequent error paths.
Fix that by calling fb_destroy_modelist().

The Linux kernel CVE team has assigned CVE-2026-72268 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 2.6.30 with commit 215059d2421f95c30d1fca6ff31357fcae9f67dc and fixed in 5.10.261 with commit 237611edf15172e4dc7fa9b3b71c2445602d3459
	Issue introduced in 2.6.30 with commit 215059d2421f95c30d1fca6ff31357fcae9f67dc and fixed in 5.15.212 with commit 2199d70efc5bea0e9b4462a4f9e4c3d3c21c5d34
	Issue introduced in 2.6.30 with commit 215059d2421f95c30d1fca6ff31357fcae9f67dc and fixed in 6.1.178 with commit b039e0693df003c5baa1e89630344f92a78afb15
	Issue introduced in 2.6.30 with commit 215059d2421f95c30d1fca6ff31357fcae9f67dc and fixed in 6.6.145 with commit dfbb1a695d8891774c80c0e2a9192afb66469eb7
	Issue introduced in 2.6.30 with commit 215059d2421f95c30d1fca6ff31357fcae9f67dc and fixed in 6.12.97 with commit b7b26adc2718ca8f81ca75cd03aee94269d00e8a
	Issue introduced in 2.6.30 with commit 215059d2421f95c30d1fca6ff31357fcae9f67dc and fixed in 6.18.40 with commit e1ca9b8559e0f5959228626bdeaae530a1ee0337
	Issue introduced in 2.6.30 with commit 215059d2421f95c30d1fca6ff31357fcae9f67dc and fixed in 7.1.5 with commit 2fd16a94bea5e0c3e93791436cf8a800b175762a
	Issue introduced in 2.6.30 with commit 215059d2421f95c30d1fca6ff31357fcae9f67dc and fixed in 7.2-rc1 with commit bb019d755366cc3e777a12d4bf457ff289837370

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2026-72268
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/video/fbdev/tdfxfb.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/237611edf15172e4dc7fa9b3b71c2445602d3459
	https://git.kernel.org/stable/c/2199d70efc5bea0e9b4462a4f9e4c3d3c21c5d34
	https://git.kernel.org/stable/c/b039e0693df003c5baa1e89630344f92a78afb15
	https://git.kernel.org/stable/c/dfbb1a695d8891774c80c0e2a9192afb66469eb7
	https://git.kernel.org/stable/c/b7b26adc2718ca8f81ca75cd03aee94269d00e8a
	https://git.kernel.org/stable/c/e1ca9b8559e0f5959228626bdeaae530a1ee0337
	https://git.kernel.org/stable/c/2fd16a94bea5e0c3e93791436cf8a800b175762a
	https://git.kernel.org/stable/c/bb019d755366cc3e777a12d4bf457ff289837370