5.5

CVE-2024-56769: linux Use of Uninitialized Resource

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-56769DEBIAN-CVE-2024-56769
Published 06-01-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2024-56769 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 49 · Related 47
DLA-4075-1DLA-4076-1MGASA-2025-0030MGASA-2025-0032SUSE-SU-2025:0289-1SUSE-SU-2025:0428-1

Timeline

  1. 06-01-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: dib3000mb: fix uninit-value in dib3000_write_reg Syzbot reports [1] an uninitialized value issue found by KMSAN in dib3000_read_reg(). Local u8 rb[2] is used in i2c_transfer() as a read buffer; in case that call fails, the buffer may end up with some undefined values. Since no elaborate error handling is expected in dib3000_write_reg(), simply zero out rb buffer to mitigate the problem. [1] Syzkaller report dvb-usb: bulk message failed: -22 (6/0) ===================================================== BUG: KMSAN: uninit-value in dib3000mb_attach+0x2d8/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 dib3000mb_attach+0x2d8/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 dibusb_dib3000mb_frontend_attach+0x155/0x2f0 drivers/media/usb/dvb-usb/dibusb-mb.c:31 dvb_usb_adapter_frontend_init+0xed/0x9a0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:290 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:90 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:186 [inline] dvb_usb_device_init+0x25a8/0x3760 drivers/media/usb/dvb-usb/dvb-usb-init.c:310 dibusb_probe+0x46/0x250 drivers/media/usb/dvb-usb/dibusb-mb.c:110 ... Local variable rb created at: dib3000_read_reg+0x86/0x4e0 drivers/media/dvb-frontends/dib3000mb.c:54 dib3000mb_attach+0x123/0x3c0 drivers/media/dvb-frontends/dib3000mb.c:758 ...

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

0.00 pp

From 0.23% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu135 products
  • linuxAll versions (No fix recorded) | < 5.4.0-211.231 | < 5.15.0-135.146 | < 6.8.0-60.63
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1142.152 | < 5.15.0-1080.87 | < 6.8.0-1029.31
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 74340b0a8bc60b400c7e5fe4950303aa6f914d16, < 035772fcd631eee2756b31cb6df249c0a8d453d7 | ≥ 74340b0a8bc60b400c7e5fe4950303aa6f914d16, < e11778189513cd7fb2edced5bd053bc18ede8418 | ≥ 74340b0a8bc60b400c7e5fe4950303aa6f914d16, < 53106510736e734ce8b731ba871363389bfbf4c9 | ≥ 74340b0a8bc60b400c7e5fe4950303aa6f914d16, < 3876e3a1c31a58a352c6bf5d2a90e3304445a637 | ≥ 74340b0a8bc60b400c7e5fe4950303aa6f914d16, < 1d6de21f00293d819b5ca6dbe75ff1f3b6392140 | ≥ 74340b0a8bc60b400c7e5fe4950303aa6f914d16, < c1197c1457bb7098cf46366e898eb52b41b6876a | ≥ 74340b0a8bc60b400c7e5fe4950303aa6f914d16, < 2dd59fe0e19e1ab955259978082b62e5751924c7 | 2.6.19
  • linux_kernel≥ 2.6.19, < 6.1.123 | ≥ 6.2, < 6.6.69 | ≥ 6.7, < 6.12.8 | 6.13:rc1 | 6.13:rc2 | 6.13:rc3
Debian1 product
  • linux< 6.1.123-1 | < 6.12.8-1

3 vendors · 138 products

References

52 links
Show all 52 references