01 Record

CVE-2022-50488

block, bfq: fix possible uaf for 'bfqq->bic'

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

block, bfq: fix possible uaf for 'bfqq->bic'

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 5.5% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-15.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-10-04 15:43Z1 YR AGO

Last updated

2026-10-15 21:41Z13 DAYS AGO

Reserved

2025-10-04

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

3a1c6f4b500c8030d926bc9ac93f2a8b327ed101c965394b1ca84caee99453da

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux4dfc12f8c94c8052e975060f595938f75e8b7165 to < 5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a, 81b7d0c717a487ec50e2924a773ff501ee40f0d5 to < 094f3d9314d67691cb21ba091c1b528f6e3c4893, 3bc5e683c67d94bd839a1da2e796c15847b51b69 to < b22fd72bfebda3956efc4431b60ddfc0a51e03e0, 3bc5e683c67d94bd839a1da2e796c15847b51b69 to < 761564d93c8265f65543acf0a576b32d66bfa26a, 3bc5e683c67d94bd839a1da2e796c15847b51b69 to < 64dc8c732f5c2b406cc752e6aaa1bd5471159cab, 31326bf551269fb9bafa84ca99172b8340e5d8f8, 43c51b86dbe551cff5d39b88aa2f41d29479f9c4, 8615f6c0c9e7cf0ca90b6b5408784d797cbe5621, 5.10.121 to < 5.10.175, 5.15.46 to < 5.15.86, 5.4.198 to < 5.5, 5.17.14 to < 5.18, 5.18.3 to < 5.19, 5.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a
git.kernel.orghttps://git.kernel.org/stable/c/094f3d9314d67691cb21ba091c1b528f6e3c4893
git.kernel.orghttps://git.kernel.org/stable/c/b22fd72bfebda3956efc4431b60ddfc0a51e03e0
git.kernel.orghttps://git.kernel.org/stable/c/761564d93c8265f65543acf0a576b32d66bfa26a
git.kernel.orghttps://git.kernel.org/stable/c/64dc8c732f5c2b406cc752e6aaa1bd5471159cab

07 Fixed in

Debian 12

linux
Fixed in 6.1.4-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.1.4-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.1.4-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.