CVE-2022-50556drm: Fix potential null-ptr-deref due to drmm_mode_config_init()
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 88% 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: drm: Fix potential null-ptr-deref due to drmm_mode_config_init() drmm_mode_config_init() will call drm_mode_create_standard_properties() and won't check the ret value. When drm_mode_create_standard_properties() failed due to alloc, property will be a NULL pointer and may causes the null-ptr-deref. Fix the null-ptr-deref by adding the ret value check. Found null-ptr-deref while testing insert module bochs: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] CPU: 3 PID: 249 Comm: modprobe Not tainted 6.1.0-rc1+ #364 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014 RIP: 0010:drm_object_attach_property+0x73/0x3c0 [drm] Call Trace: <TASK> __drm_connector_init+0xb6c/0x1100 [drm] bochs_pci_probe.cold.11+0x4cb/0x7fe [bochs] pci_device_probe+0x17d/0x340 really_probe+0x1db/0x5d0 __driver_probe_device+0x1e7/0x250 driver_probe_device+0x4a/0x120 __driver_attach+0xcd/0x2c0 bus_for_each_dev+0x11a/0x1b0 bus_add_driver+0x3d7/0x500 driver_register+0x18e/0x320 do_one_initcall+0xc4/0x3e0 do_init_module+0x1b4/0x630 load_module+0x5dca/0x7230 __do_sys_finit_module+0x100/0x170 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff65af9f839
Timeline
ID reserved
By Linux
Published
- 7 months later
· 7 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 6b4959f43a04e12d39c5700607727f2cbcfeac31 – < 5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0
- affected 6b4959f43a04e12d39c5700607727f2cbcfeac31 – < d06e827a65a6bcd2e329045d891d0739cec1cf4a
- affected 6b4959f43a04e12d39c5700607727f2cbcfeac31 – < b14147464251f66e38fa39f0aae9780466db8610
- affected 6b4959f43a04e12d39c5700607727f2cbcfeac31 – < 961620ad67611a7320a49f4b6f3c5e2906833a03
- affected 6b4959f43a04e12d39c5700607727f2cbcfeac31 – < 834c23e4f798dcdc8af251b3c428ceef94741991
- affected 4.0
- unaffected < 4.0
- unaffected 5.10.173 – ≤ 5.10.*
- unaffected 5.15.99 – ≤ 5.15.*
- unaffected 6.1.16 – ≤ 6.1.*
- unaffected 6.2.3 – ≤ 6.2.*
- unaffected 6.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0 (opens in a new tab)
- https://git.kernel.org/stable/c/d06e827a65a6bcd2e329045d891d0739cec1cf4a (opens in a new tab)
- https://git.kernel.org/stable/c/b14147464251f66e38fa39f0aae9780466db8610 (opens in a new tab)
- https://git.kernel.org/stable/c/961620ad67611a7320a49f4b6f3c5e2906833a03 (opens in a new tab)
- https://git.kernel.org/stable/c/834c23e4f798dcdc8af251b3c428ceef94741991 (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-2022-55672 (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-2022-50556)Record last updated .