- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: Fix fb_new_modelist to prevent null-ptr-deref in fb_videomode_to_var info->var, a framebuffer's current mode, is expected to have a matching entry in info->modelist. var_to_display() relies on this and treats a failed fb_match_mode() as "This should not happen". fb_set_var() keeps it true by adding the mode to the list on every change, and do_register_framebuffer() does the same at registration. store_modes() replaces the modelist from userspace. fb_new_modelist() validates the new modes but does not check that info->var still has a match. It relies on fbcon_new_modelist() to re-point consoles, but that only handles consoles mapped to the framebuffer. With fbcon unbound there are none, so info->var is left describing a mode that is no longer in the list. A later console takeover runs var_to_display(), where fb_match_mode() returns NULL and leaves fb_display[i].mode NULL. fbcon_switch() passes it to display_to_var(), and fb_videomode_to_var() dereferences the NULL mode. Keep the current mode in the list in fb_new_modelist(), the same way fb_set_var() does.
Timeline
ID reserved
By Linux
- 40 days later
· 40 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 1458a4d804550b7101e8bb02c1cb941088e4c0c7
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 8707f02ac9f5f632039b60df2c9f3dc914709f72
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 0d8c7f21ad8529d5c181e61f86be35b887ae2e4d
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 7640b4f68acb54c2c4f6b4a8aee0e9849dacd929
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 4f1a7fe8ba845cb7d39580755f78c3b7b9a0b61e
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < eea16b6f805c0b1fb2f72f0f771088ea45356956
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 88913059c77e171f44ba829282d42dde0d458811
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 7f08fc10fa3d3366dc3af723970bd03d7d6d10e3
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 5.10.260 – ≤ 5.10.*
- unaffected 5.15.211 – ≤ 5.15.*
- unaffected 6.1.177 – ≤ 6.1.*
- unaffected 6.6.144 – ≤ 6.6.*
- unaffected 6.12.95 – ≤ 6.12.*
- unaffected 6.18.38 – ≤ 6.18.*
- unaffected 7.1.3 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/1458a4d804550b7101e8bb02c1cb941088e4c0c7 (opens in a new tab)
- https://git.kernel.org/stable/c/8707f02ac9f5f632039b60df2c9f3dc914709f72 (opens in a new tab)
- https://git.kernel.org/stable/c/0d8c7f21ad8529d5c181e61f86be35b887ae2e4d (opens in a new tab)
- https://git.kernel.org/stable/c/7640b4f68acb54c2c4f6b4a8aee0e9849dacd929 (opens in a new tab)
- https://git.kernel.org/stable/c/4f1a7fe8ba845cb7d39580755f78c3b7b9a0b61e (opens in a new tab)
- https://git.kernel.org/stable/c/eea16b6f805c0b1fb2f72f0f771088ea45356956 (opens in a new tab)
- https://git.kernel.org/stable/c/88913059c77e171f44ba829282d42dde0d458811 (opens in a new tab)
- https://git.kernel.org/stable/c/7f08fc10fa3d3366dc3af723970bd03d7d6d10e3 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-45458 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-53403)Record last updated .