CVE-2022-49388 [High] | Use-After-Free in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: ubi: ubi_create_volume: Fix use-after-free when volume creation failed There is an use-after-free problem for 'eba_tbl' in ubi_create_volume()'s error handling path: ubi_eba_replace_table(vol, eba_tbl) vol->eba_tbl = tbl out_mapping: ubi_eba_destroy_table(eba_tbl) // Free 'eba_tbl' out_unlock: put_device(&vol->dev) vol_release kfree(tbl->entries) // UAF Fix it by removing redundant 'eba_tbl' releasing. Fetch a reproducer in [Link].

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-07	0.06%	0.01%	-0.05%
2	2026-04-06	0.03%	0.06%	+0.03%
3	2025-11-21	—	0.03%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-07

0.06%

0.01%

-0.05%

2026-04-06

0.03%

0.06%

+0.03%

2025-11-21

—

0.03%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.1

HIGH

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

5.9

134c704f-9b21-4f2e-91b3-4a467353bcc0

OS Trackers for CVE-2022-49388

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-49388 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2022-49388
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2022-49388
`suse`	medium	CVE-2022-49388 severity moderate: SUSE including 269 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 419 product×package rows across 39 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-HPC-BYOS, … (39 product lines)): Known Affected 231, Known Not Affected 115, Fixed 73.	https://www.suse.com/security/cve/CVE-2022-49388/
`ubuntu`	medium	CVE-2022-49388 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, released 151, ignored 146, not-affected 108, needs-triage 1.	https://ubuntu.com/security/CVE-2022-49388

Affected software / configurations for CVE-2022-49388

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 4.12, < 4.14.283	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.247	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.198	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.122	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.47	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 5.17.15	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.18, < 5.18.4	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-49388

URL	Tags
https://git.kernel.org/stable/c/1174ab8ba36a48025b68b5ff1085000b1e510217	Patch
https://git.kernel.org/stable/c/25ff1e3a1351c0d936dd1ac2f9e58231ea1510c9	Patch
https://git.kernel.org/stable/c/5ff2514e4fb55dcf3d88294686040ca73ea0c1a2	Patch
https://git.kernel.org/stable/c/6d8d3f68cbecfd31925796f0fb668eb21ab06734	Patch
https://git.kernel.org/stable/c/8302620aeb940f386817321d272b12411ae7d39f	Patch
https://git.kernel.org/stable/c/8c03a1c21d72210f81cb369cc528e3fde4b45411	Patch
https://git.kernel.org/stable/c/abb67043060f2bf4c03d7c3debb9ae980e2b6db3	Patch
https://git.kernel.org/stable/c/e27ecf325e51abd06aaefba57a6322a46fa4178b	Patch

URL

CVE-2022-49388 | ubi: ubi_create_volume: Fix use-after-free when volume creation failed

Exploit prediction scoring system (EPSS) score for CVE-2022-49388

Common vulnerability scoring system (CVSS) metrics for CVE-2022-49388

Weakness enumeration for CVE-2022-49388

OS Trackers for CVE-2022-49388

Affected software / configurations for CVE-2022-49388

References for CVE-2022-49388