CVE-2022-49731

ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()

State: Published
Severity: 5.5 Medium
Published: Feb 26, 2025
Updated: May 11, 2026
Reserved: Feb 26, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()

In an unlikely (and probably wrong?) case that the 'ppi' parameter of ata_host_alloc_pinfo() points to an array starting with a NULL pointer, there's going to be a kernel oops as the 'pi' local variable won't get reassigned from the initial value of NULL. Initialize 'pi' instead to '&ata_dummy_port_info' to fix the possible kernel oops for good...

Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
LinuxLinux	f5cda257296fbd3683b1f568f2d94d3caaacf74d to before ca4693e6e06e4fd2b240c0fec47aa2498c94848eAffected f5cda257296fbd3683b1f568f2d94d3caaacf74d to before 1ac5efee33f29e704226506d429b84575a5d66f8Affected f5cda257296fbd3683b1f568f2d94d3caaacf74d to before a810bd5af06977a847d1f202b22d7defd5c62497Affected f5cda257296fbd3683b1f568f2d94d3caaacf74d to before 253334f84c81bc6a43af489f108c0bddad989eefAffected f5cda257296fbd3683b1f568f2d94d3caaacf74d to before 36cd19e7d4e5571d77a2ed20c5b6ef50cf57734aAffected f5cda257296fbd3683b1f568f2d94d3caaacf74d to before ff128fbea720bf763fa345680dda5f050bc24a47Affected f5cda257296fbd3683b1f568f2d94d3caaacf74d to before 07cbdb4807d369fbda73062a91b570c4dc5ec429Affected f5cda257296fbd3683b1f568f2d94d3caaacf74d to before bf476fe22aa1851bab4728e0c49025a6a0bea307Affected
LinuxLinux	2.6.22Affected before 2.6.22Not affected 4.9.320 through 4.9.Not affected 4.14.285 through 4.14.Not affected 4.19.249 through 4.19.Not affected 5.4.200 through 5.4.Not affected 5.10.124 through 5.10.Not affected 5.15.49 through 5.15.Not affected 5.18.6 through 5.18.*Not affected 5.19 and laterNot affected

Product

Versions

LinuxLinux

f5cda257296fbd3683b1f568f2d94d3caaacf74d to before ca4693e6e06e4fd2b240c0fec47aa2498c94848eAffected
f5cda257296fbd3683b1f568f2d94d3caaacf74d to before 1ac5efee33f29e704226506d429b84575a5d66f8Affected
f5cda257296fbd3683b1f568f2d94d3caaacf74d to before a810bd5af06977a847d1f202b22d7defd5c62497Affected
f5cda257296fbd3683b1f568f2d94d3caaacf74d to before 253334f84c81bc6a43af489f108c0bddad989eefAffected
f5cda257296fbd3683b1f568f2d94d3caaacf74d to before 36cd19e7d4e5571d77a2ed20c5b6ef50cf57734aAffected
f5cda257296fbd3683b1f568f2d94d3caaacf74d to before ff128fbea720bf763fa345680dda5f050bc24a47Affected
f5cda257296fbd3683b1f568f2d94d3caaacf74d to before 07cbdb4807d369fbda73062a91b570c4dc5ec429Affected
f5cda257296fbd3683b1f568f2d94d3caaacf74d to before bf476fe22aa1851bab4728e0c49025a6a0bea307Affected

LinuxLinux

2.6.22Affected
before 2.6.22Not affected
4.9.320 through 4.9.*Not affected
4.14.285 through 4.14.*Not affected
4.19.249 through 4.19.*Not affected
5.4.200 through 5.4.*Not affected
5.10.124 through 5.10.*Not affected
5.15.49 through 5.15.*Not affected
5.18.6 through 5.18.*Not affected
5.19 and laterNot affected

References

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