5.5

CVE-2022-49741: fbdev: smscufx: fix error handling code in ufx_usb_probe

Modified
AliasesUBUNTU-CVE-2022-49741DEBIAN-CVE-2022-49741
Published 27-03-2025Last modified 23-05-2026

Vulnerability summary

CVE-2022-49741 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 9.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
SUSE-SU-2025:01620-1SUSE-SU-2025:01627-1SUSE-SU-2025:01640-1SUSE-SU-2025:1573-1

Timeline

  1. 27-03-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: fix error handling code in ufx_usb_probe The current error handling code in ufx_usb_probe have many unmatching issues, e.g., missing ufx_free_usb_list, destroy_modedb label should only include framebuffer_release, fb_dealloc_cmap only matches fb_alloc_cmap. My local syzkaller reports a memory leak bug: memory leak in ufx_usb_probe BUG: memory leak unreferenced object 0xffff88802f879580 (size 128): comm "kworker/0:7", pid 17416, jiffies 4295067474 (age 46.710s) hex dump (first 32 bytes): 80 21 7c 2e 80 88 ff ff 18 d0 d0 0c 80 88 ff ff .!|............. 00 d0 d0 0c 80 88 ff ff e0 ff ff ff 0f 00 00 00 ................ backtrace: [<ffffffff814c99a0>] kmalloc_trace+0x20/0x90 mm/slab_common.c:1045 [<ffffffff824d219c>] kmalloc include/linux/slab.h:553 [inline] [<ffffffff824d219c>] kzalloc include/linux/slab.h:689 [inline] [<ffffffff824d219c>] ufx_alloc_urb_list drivers/video/fbdev/smscufx.c:1873 [inline] [<ffffffff824d219c>] ufx_usb_probe+0x11c/0x15a0 drivers/video/fbdev/smscufx.c:1655 [<ffffffff82d17927>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<ffffffff82712f0d>] call_driver_probe drivers/base/dd.c:560 [inline] [<ffffffff82712f0d>] really_probe+0x12d/0x390 drivers/base/dd.c:639 [<ffffffff8271322f>] __driver_probe_device+0xbf/0x140 drivers/base/dd.c:778 [<ffffffff827132da>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:808 [<ffffffff82713c27>] __device_attach_driver+0xf7/0x150 drivers/base/dd.c:936 [<ffffffff82710137>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [<ffffffff827136b5>] __device_attach+0x105/0x2d0 drivers/base/dd.c:1008 [<ffffffff82711d36>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:487 [<ffffffff8270e242>] device_add+0x642/0xdc0 drivers/base/core.c:3517 [<ffffffff82d14d5f>] usb_set_configuration+0x8ef/0xb80 drivers/usb/core/message.c:2170 [<ffffffff82d2576c>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<ffffffff82d16ffc>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<ffffffff82712f0d>] call_driver_probe drivers/base/dd.c:560 [inline] [<ffffffff82712f0d>] really_probe+0x12d/0x390 drivers/base/dd.c:639 [<ffffffff8271322f>] __driver_probe_device+0xbf/0x140 drivers/base/dd.c:778 Fix this bug by rewriting the error handling code in ufx_usb_probe.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.19% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu114 products
  • linuxAll versions (No fix recorded) | < 5.4.0-149.166 | < 5.15.0-72.79
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1102.110 | < 5.15.0-1036.40
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 5385af2f89bc352fb70753ab41b2bb036190141f, < 3b3d3127f5b4291ae4caaf50f7b66089ad600480 | ≥ d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86, < 3931014367ef31d26af65386a4ca496f50f0cfdf | ≥ cc6a7249842fceda7574ceb63275a2d5e99d2862, < 64fa364ad3245508d393e16ed4886f92d7eb423c | ≥ cc67482c9e5f2c80d62f623bcc347c29f9f648e1, < 1b4c08844628dfc8d72d3f51b657f2a5e63b7b4b | ≥ cc67482c9e5f2c80d62f623bcc347c29f9f648e1, < b76449ee75e21acfe9fa4c653d8598f191ed7d68 | 6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f | 3f40852d671072836fb7ae331a1f28a24223c4e8 | 70faf9d9b6cc74418716bbf76fe75bd2da10ad4a | 8d924b262f3178a9b17c17d4306a9f426c508bd9 | ≥ 5.4.223, < 5.4.232 | ≥ 5.10.153, < 5.10.168 | ≥ 5.15.77, < 5.15.93 | ≥ 4.9.332, < 4.10 | ≥ 4.14.298, < 4.15 | ≥ 4.19.264, < 4.20 | ≥ 6.0.7, < 6.1 | 6.1
  • linux_kernel< 5.4.232 | ≥ 5.5, < 5.10.168 | ≥ 5.11, < 5.15.93 | ≥ 5.16, < 6.1.11
Debian1 product
  • linux< 6.1.11-1

3 vendors · 117 products

References

9 links